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This Gibson replacement header gaskets deliver a precise seal for Chevrolet 4.8L and 5.3L Vortec engines plus GM 5.3L and 6.0L LS engines in trucks and SUVs like Silverado Sierra Tahoe and Yukon. These MLS gaskets pair perfectly with Gibson performance headers for improved exhaust flow. Expect reliable sealing that supports average 5-10 horsepower gains when installed with compatible headers and backed by Lifetime Limited Warranty.
Key Features
- Sold as Pair: Includes two gaskets for left and right headers with 040 inch thickness for stock or performance setups.
- MLS Multi-Layer Steel Construction: Forms a durable leak-proof barrier that handles extreme cylinder pressures and exhaust heat over 2000 degrees F.
- Precise Port Matching: Square exhaust ports match Gibson headers and OEM manifolds on cathedral port LS engines for unrestricted flow.
- Bolt-On Direct Fit: No trimming or modifications required for hassle-free replacement on 1999-2007 GM LS applications.
- Multi-layer steel MLS with 040 inch thickness designed for high-pressure sealing on LS engines.
- High-Temperature Resistant: Maintains integrity under boost or high RPM conditions without cracking or blowing out.
Fitment
| Fitment Basis | Universal by exact exhaust dimensions and interface |
|---|---|
| Required Verification | Diameter, length, orientation, attachment method, finish, and available clearance |
Specifications
| Manufacturer | Gibson |
|---|---|
| Manufacturer Part Number | 9241 |
| Product Type | Gasket Kits |
| Fitment Type | Universal by exact dimensions and interface |
| Fitment | 4.8L - 5.3L - 6.0L - 6.2L |
What's Included
- One new Gibson gasket kits in the exact configuration identified by manufacturer part number 9241
- Hardware and accessories only when supplied for this exact part number
About Gibson
Gibson develops vehicle-specific and universal exhaust components for street, truck, SUV, and performance applications. Selection and installation requirements remain exact-part-number specific.
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Frequently Asked Questions
Which vehicles fit Gibson GIB9241?
Gibson GIB9241 is listed for a universal application selected by the published dimensions and connection details. Confirm the exact engine, trim, drivetrain, body or cab configuration, exhaust layout, and every application note before ordering.
What should I verify before ordering Gibson GIB9241?
Match the exact part number, system type, material, finish, tubing and connection diameters, exhaust configuration, package contents, and current manufacturer notes shown in this listing.
What should be checked when installing Gibson GIB9241?
Verify all interfaces, hanger positions, tip and body clearances, clamp or fastener torque, leak-free operation, and local emissions requirements. Reinspect the system after its first heat cycle.
Installation Instructions
Follow the current Gibson instructions and vehicle service information for this exact part number. Work on a cool exhaust, support the vehicle safely, confirm all interfaces and clearances, align the system before final tightening, test for leaks, and inspect the installation again after the first heat cycle.
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