Seal your H23A1 header joint without the guesswork—this gasket handles high-temp exhaust pressure where factory seals fail. Built for the demanding combustion cycle, it prevents exhaust leaks that kill performance and create noise. Direct fit, ready to install.
✓ Ships from FL Warehouse✓ In-House Quality Check✓ High-Temperature Rated
Key Features
Combustion-rated construction - Resists thermal cycling and prevents blowby that compromises header performance
H23A1 specific design - Engineered for your exact engine's port geometry and bolt pattern
One-time use seal - Replace on every header removal to maintain reliable compression
Specs
Hard panel construction
Single unit
What's Included
Exhaust header gasket
Frequently Asked Questions
Do I need to replace this every time I pull my header?
Yes. Header gaskets compress under heat and lose sealing ability once disturbed. A fresh gasket each time is the only way to guarantee no exhaust leaks.
Can I reuse the old bolts when I reinstall?
Check your service manual for bolt torque specs and whether they're stretch bolts. If they are, new bolts are the safer call. Hand-tight first, then torque in a star pattern to avoid warping.
Do I need to clean the header surface before installing this?
Yes. Scrape off old gasket material and carbon buildup from both the header and cylinder head. A clean, flat surface is critical for a proper seal—don't skip this step.
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**Rates from 0%-36% APR. Payment options through Shop Pay Installments, are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers https://www.affirm.com/licenses.
