1986 Buick Grand National Aluminum Exhaust Header Gasket
Specifications Part numbers, fitment codes and shipping
- Brand
- K2 Industries
- Speedzone SKU
- K2-4443-BUI-006-TSARK
- Manufacturer part number
- K2-4443-BUI-006-TSARK
- UPC
- GKT-A-HD-GN86
- Category
- Tool Sets and Repair Kits
- Shipping weight
- 2.0 lb
1986 Buick Grand National Aluminum Exhaust Header Gasket
Seal your header-to-manifold joint with aluminum construction designed for durability and heat resistance. This gasket handles the thermal cycling and pressure of high-flow exhaust systems. Aluminum core resists warping and maintains a consistent seal across multiple heat cycles.
Key Features
- Aluminum core material - Resists thermal warping under sustained exhaust heat
- Header-specific geometry - Designed to seal port-to-manifold interface consistently
- Ready to install - No additional prep or coating required before fitting
Specs
- Material: Aluminum
- Application: Exhaust header-to-manifold gasket
- Condition: New
Whats Included
- Exhaust header gasket (1 piece)
Frequently Asked Questions
Do I need to clean the mounting surfaces before installing this gasket?
Yes. Clean both the header and manifold mating surfaces with a wire brush to remove carbon buildup and old gasket residue. A clean, flat surface ensures a proper seal and prevents exhaust leaks.
Will this gasket work with a stock manifold or only with an aftermarket header?
This gasket is designed for header applications. If you're running stock manifold setup, verify your port pattern matches before ordering. Confirm bolt hole spacing and port diameter align with your specific configuration.
What's the return process if the gasket doesn't fit once I receive it?
Contact ModSupply customer service with photos of the gasket against your header or manifold ports. Most fitment issues can be resolved with verification before installation. Keep the gasket in original condition for fastest resolution.
Full details on shipping times, returns, warranty and cancellations are on our policy page.
Market conditions after 2020 have changed the landscape of automotive parts. Although we stock thousands of items across multiple warehouses and distribution channels, back-orders are unavoidable in today's market. If you need a product quickly, email, message or call us to check availability so we can explore your options.
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Call 407-846-8430
Text 407-749-6314
Answers to common questions are on our FAQ page.
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