Copper Exhaust Gaskets, Square Port, Fits Small Block Chevy
- Cut from .040-inch thick dead soft copper sheet material
- Reusable copper header gaskets provide ultimate sealing, even on irregular surfaces
- Raised ridge port seal enhances sealing and prevents blow outs
- Natural high temperature use that will not burn or deteriorate like paper gaskets
- Best gasket option for high performance use, turbo setups, and more
- Square exhaust ports feature 1.38-inch x 1.38-inch inside dimensions
- Exhaust port opening can be enlarged up to 1.50-inch x 1.50-inch
- Copper gaskets seal most any manifold or header to your square port SBC heads
- Seals imperfect header and cylinder head surfaces that paper gaskets can’t
Stop Wasting Money on Cheap Paper Exhaust Gaskets
When buying headers for your ride many of the brands you’ll find provide gaskets and header bolts in the box for a complete installation solution. While this is admirable of the manufacturer, often the included header gaskets (and even the bolts at times) are made from subpar materials to keep product costs down while providing this “everything you need in one box” purchase mentality. The truth of the matter is that these paper/fiber header gaskets may help get your headers installed but they certainly will not seal very well or last exceptionally long. The main issue is sealing. Both the headers and even the cylinder head port surface can have irregularities that cause the gasket to not seal and to be easily blown out. Add to that issue that paper based gaskets often can’t handle the intense exhaust heat in some applications and will burn/turn hard, causing leaks as well. The answer? High quality ThermoTight dead soft copper gaskets that form over minor imperfections for a better seal that are also reusable, saving you money overall.
Dead Soft Copper for Superior Sealing and Reusability
Paper and other fiber-based gaskets are not the best materials to use for sealing exhaust systems. Sure, you can slather on a bunch of silicone or other gasket maker to help but that just makes a mess of your engine and headers. What about soaking those paper gaskets in water to expand them for a better seal? Sure, it’s an old hot rodder trick that might help, once! Or the gaskets may completely fall apart on you. No, the best sealing is offered via materials like dead soft copper. Stamped from .040-inch thick dead soft copper gasket material, this malleable material easily conforms to header exhaust port weld beads and other tough sealing issues like gouges or even minor corrosion pitting on the exhaust face of your cylinder heads or headers/manifolds.
The dead soft copper header gaskets maintain their softness and have no annealing properties so the copper exhaust gaskets can be formed repeatedly to maintain the best seal use after use. This makes the ThermoTight copper exhaust gaskets perfect for engines that see a lot of header or manifold removal like race cars, engines that see a lot of tear down like turbo setups, or enthusiasts that like to change headers with under car exhaust to zoomies or outside the frame lake pipe setups on their SBC powered rides for an event or cruise. The embossed sealing ridge on the SBC copper header gaskets (which always faces the header flange) helps sealing even further by adding additional conformity to the material, while helping to maintain the gaskets reusability and durability.
Overcome High Heat Exhaust Gasket Failures, Blowouts, Leaks, and More
Copper is used in wiring because it is a great conductor, both of electricity and heat. Being a solid thermal conductor, copper makes for an excellent exhaust gasket material. The engine’s exhaust heat at the exhaust face of the cylinder head is quickly and easily transferred to the exhaust header tubing via the copper exhaust gaskets to be carried away from the engine via exhaust flow and radiant air flow around the header tubes. Paper-type gaskets are the exact opposite, as paper is an insulator, holding in those high exhaust temperatures. This insulating effect is what burns the exhaust gasket, turning it brittle and causing leaks and blow outs where gasket coverage is thin.
Paper gaskets also “set” over time, which is why most manufacturers recommend constant header bolt tightening. The bolts aren’t backing out, the gasket is shrinking/setting, and the bolts require tightening to apply clamping force on the paper gaskets again to maintain proper sealing. With the use of ThermoTight dead soft copper header gaskets for your SBC square port heads you won’t have to worry about header bolts being a maintenance issue, as the copper gasket material does not shrink or blow out like paper gaskets do. You can always add Shop Locking Header Bolts for extra piece of mind as well. ThermoTight copper gaskets work extremely well as copper exhaust manifold gaskets too if you’re having issues sealing original iron exhaust manifolds.
Solve your exhaust gasket sealing problems with our ThermoTight dead soft copper gaskets and put exhaust leaks behind you. Easy to install, reusable, and premium materials at an excellent value that are perfect for high performance engines used in serious street cars or racing and for extensive high heat applications like supercharged or turbocharged builds. What’s not to like? Don’t forget dead soft copper header collector gaskets too for a complete header sealing solution! We offer Shop 3-Bolt Copper Header Collector Gaskets in all popular 3-bolt flange sizes.
- Torque Specs: Grade 5 exhaust header bolts usually tighten to 23-32 ft-lbs., and exhaust flange/collector bolts to 20-30 ft-lbs. Tighten bolts in a pattern starting from the center to avoid damage. Always check your vehicle or part manual for the exact torque specs.
- Gasket Retorque: Extreme heat applications such as turbo manifolds or airflow restrictive engine bays may cause the gasket sealing ridge to relax. This will show up as an exhaust ticking sound at idle. Retorque the header bolts to reseal the gasket. The gasket has not failed and should not be replaced. One retorque is usually sufficient for permanent sealing.
- Sealants with Copper Gaskets: A quality copper exhaust gasket usually doesn’t need sealant if the surfaces are clean and flat. Use high temperature sealant only if the surfaces are uneven or have small gaps that the copper gasket material will not fill and seal. A thin coat around each exhaust port should be enough for “troublesome” sealing applications. Avoid sealants near O2 sensors to prevent damage to the sensors.
Excellent product..would buy again
Summary: Excellent product would buy again .
Yes, I recommend this product.
I would buy this product again
Summary: Been using this gasket for along time on my personal cars and customers car leak free 👍
Fast shipping, A++
Summary: Great part. Hi quality
Pros: A+ part
Yes, I recommend this product.
Absolutely Love
Summary: I use these on all my SBC and SBF
Yes, I recommend this product.
I hope i don´t need to insall again, they worked great......
Summary: as it was ment to :D exhaust gaskets.
Yes, I recommend this product.
Shipping Overview:
• Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.
• Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.
• Order Processing: Please allow 1-2 business days for order processing and preparation before shipment.
• Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days
• International Shipping: Currently, we only ship within the USA.
• Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.
Shipping Delays:
Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.
Shipping Options:
-
Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.
-
Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.
-
Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.
-
Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.
Delivery Details:
-
Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.
-
Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.
-
Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.
Shipping Confirmation:
You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.
Order Modifications:
If you need to cancel or modify your order, please contact our customer support immediately.
Issues with Delivery:
If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.
Customer Support:
Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.
Return & Refund Policy Overview
Please review our return and refund policies below to ensure a smooth transaction process.
Return Policy
-
Duration: You have 30 days from receiving your item to initiate a return.
-
Condition: Items must be unworn, unwashed, with original tags and packaging intact.
-
Shipping Costs:
- If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.
- If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.
- We are not responsible for return shipping costs for items returned without prior authorization. -
Packaging: Ensure returned items are well-packaged to avoid damage during transit.
-
Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.
-
Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.
How to Return
-
Method: Returns must be sent back by mail to the address provided in the return instructions.
Return Label
-
Please contact us to get return labels.
Product Conditions for Return
-
Eligible Products: Returns are only accepted for items in new condition.
Nonreturnable Items
Certain items are not eligible for return:
-
Electronic devices after 30 days (e.g., computers, laptops, Kindles)
-
Gift cards, prepaid game cards
-
Perishable goods, live insects, some jewelry, some health and personal care items
-
Customized or personalized products
-
Items with special shipping restrictions
Refund Policy
-
Window: Eligible products may be returned within 30 days of delivery for a refund.
-
Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.
-
Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.
Claims
Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.
Exchange Policy
For the quickest service, return your original item and place a new order for the desired product once your return is accepted.
Return Address
EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366
Customer Support
Available 24/7 for any questions or assistance needed:
-
Phone: +1 (800) 660-3783
-
Email: cs@everymarket.com
- Cut from .040-inch thick dead soft copper sheet material
- Reusable copper header gaskets provide ultimate sealing, even on irregular surfaces
- Raised ridge port seal enhances sealing and prevents blow outs
- Natural high temperature use that will not burn or deteriorate like paper gaskets
- Best gasket option for high performance use, turbo setups, and more
- Square exhaust ports feature 1.38-inch x 1.38-inch inside dimensions
- Exhaust port opening can be enlarged up to 1.50-inch x 1.50-inch
- Copper gaskets seal most any manifold or header to your square port SBC heads
- Seals imperfect header and cylinder head surfaces that paper gaskets can’t
Stop Wasting Money on Cheap Paper Exhaust Gaskets
When buying headers for your ride many of the brands you’ll find provide gaskets and header bolts in the box for a complete installation solution. While this is admirable of the manufacturer, often the included header gaskets (and even the bolts at times) are made from subpar materials to keep product costs down while providing this “everything you need in one box” purchase mentality. The truth of the matter is that these paper/fiber header gaskets may help get your headers installed but they certainly will not seal very well or last exceptionally long. The main issue is sealing. Both the headers and even the cylinder head port surface can have irregularities that cause the gasket to not seal and to be easily blown out. Add to that issue that paper based gaskets often can’t handle the intense exhaust heat in some applications and will burn/turn hard, causing leaks as well. The answer? High quality ThermoTight dead soft copper gaskets that form over minor imperfections for a better seal that are also reusable, saving you money overall.
Dead Soft Copper for Superior Sealing and Reusability
Paper and other fiber-based gaskets are not the best materials to use for sealing exhaust systems. Sure, you can slather on a bunch of silicone or other gasket maker to help but that just makes a mess of your engine and headers. What about soaking those paper gaskets in water to expand them for a better seal? Sure, it’s an old hot rodder trick that might help, once! Or the gaskets may completely fall apart on you. No, the best sealing is offered via materials like dead soft copper. Stamped from .040-inch thick dead soft copper gasket material, this malleable material easily conforms to header exhaust port weld beads and other tough sealing issues like gouges or even minor corrosion pitting on the exhaust face of your cylinder heads or headers/manifolds.
The dead soft copper header gaskets maintain their softness and have no annealing properties so the copper exhaust gaskets can be formed repeatedly to maintain the best seal use after use. This makes the ThermoTight copper exhaust gaskets perfect for engines that see a lot of header or manifold removal like race cars, engines that see a lot of tear down like turbo setups, or enthusiasts that like to change headers with under car exhaust to zoomies or outside the frame lake pipe setups on their SBC powered rides for an event or cruise. The embossed sealing ridge on the SBC copper header gaskets (which always faces the header flange) helps sealing even further by adding additional conformity to the material, while helping to maintain the gaskets reusability and durability.
Overcome High Heat Exhaust Gasket Failures, Blowouts, Leaks, and More
Copper is used in wiring because it is a great conductor, both of electricity and heat. Being a solid thermal conductor, copper makes for an excellent exhaust gasket material. The engine’s exhaust heat at the exhaust face of the cylinder head is quickly and easily transferred to the exhaust header tubing via the copper exhaust gaskets to be carried away from the engine via exhaust flow and radiant air flow around the header tubes. Paper-type gaskets are the exact opposite, as paper is an insulator, holding in those high exhaust temperatures. This insulating effect is what burns the exhaust gasket, turning it brittle and causing leaks and blow outs where gasket coverage is thin.
Paper gaskets also “set” over time, which is why most manufacturers recommend constant header bolt tightening. The bolts aren’t backing out, the gasket is shrinking/setting, and the bolts require tightening to apply clamping force on the paper gaskets again to maintain proper sealing. With the use of ThermoTight dead soft copper header gaskets for your SBC square port heads you won’t have to worry about header bolts being a maintenance issue, as the copper gasket material does not shrink or blow out like paper gaskets do. You can always add Shop Locking Header Bolts for extra piece of mind as well. ThermoTight copper gaskets work extremely well as copper exhaust manifold gaskets too if you’re having issues sealing original iron exhaust manifolds.
Solve your exhaust gasket sealing problems with our ThermoTight dead soft copper gaskets and put exhaust leaks behind you. Easy to install, reusable, and premium materials at an excellent value that are perfect for high performance engines used in serious street cars or racing and for extensive high heat applications like supercharged or turbocharged builds. What’s not to like? Don’t forget dead soft copper header collector gaskets too for a complete header sealing solution! We offer Shop 3-Bolt Copper Header Collector Gaskets in all popular 3-bolt flange sizes.
- Torque Specs: Grade 5 exhaust header bolts usually tighten to 23-32 ft-lbs., and exhaust flange/collector bolts to 20-30 ft-lbs. Tighten bolts in a pattern starting from the center to avoid damage. Always check your vehicle or part manual for the exact torque specs.
- Gasket Retorque: Extreme heat applications such as turbo manifolds or airflow restrictive engine bays may cause the gasket sealing ridge to relax. This will show up as an exhaust ticking sound at idle. Retorque the header bolts to reseal the gasket. The gasket has not failed and should not be replaced. One retorque is usually sufficient for permanent sealing.
- Sealants with Copper Gaskets: A quality copper exhaust gasket usually doesn’t need sealant if the surfaces are clean and flat. Use high temperature sealant only if the surfaces are uneven or have small gaps that the copper gasket material will not fill and seal. A thin coat around each exhaust port should be enough for “troublesome” sealing applications. Avoid sealants near O2 sensors to prevent damage to the sensors.
Excellent product..would buy again
Summary: Excellent product would buy again .
Yes, I recommend this product.
I would buy this product again
Summary: Been using this gasket for along time on my personal cars and customers car leak free 👍
Fast shipping, A++
Summary: Great part. Hi quality
Pros: A+ part
Yes, I recommend this product.
Absolutely Love
Summary: I use these on all my SBC and SBF
Yes, I recommend this product.
I hope i don´t need to insall again, they worked great......
Summary: as it was ment to :D exhaust gaskets.
Yes, I recommend this product.
Shipping Overview:
• Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.
• Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.
• Order Processing: Please allow 1-2 business days for order processing and preparation before shipment.
• Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days
• International Shipping: Currently, we only ship within the USA.
• Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.
Shipping Delays:
Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.
Shipping Options:
-
Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.
-
Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.
-
Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.
-
Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.
Delivery Details:
-
Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.
-
Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.
-
Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.
Shipping Confirmation:
You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.
Order Modifications:
If you need to cancel or modify your order, please contact our customer support immediately.
Issues with Delivery:
If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.
Customer Support:
Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.
Return & Refund Policy Overview
Please review our return and refund policies below to ensure a smooth transaction process.
Return Policy
-
Duration: You have 30 days from receiving your item to initiate a return.
-
Condition: Items must be unworn, unwashed, with original tags and packaging intact.
-
Shipping Costs:
- If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.
- If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.
- We are not responsible for return shipping costs for items returned without prior authorization. -
Packaging: Ensure returned items are well-packaged to avoid damage during transit.
-
Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.
-
Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.
How to Return
-
Method: Returns must be sent back by mail to the address provided in the return instructions.
Return Label
-
Please contact us to get return labels.
Product Conditions for Return
-
Eligible Products: Returns are only accepted for items in new condition.
Nonreturnable Items
Certain items are not eligible for return:
-
Electronic devices after 30 days (e.g., computers, laptops, Kindles)
-
Gift cards, prepaid game cards
-
Perishable goods, live insects, some jewelry, some health and personal care items
-
Customized or personalized products
-
Items with special shipping restrictions
Refund Policy
-
Window: Eligible products may be returned within 30 days of delivery for a refund.
-
Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.
-
Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.
Claims
Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.
Exchange Policy
For the quickest service, return your original item and place a new order for the desired product once your return is accepted.
Return Address
EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366
Customer Support
Available 24/7 for any questions or assistance needed:
-
Phone: +1 (800) 660-3783
-
Email: cs@everymarket.com
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