ZONFANT MLS Exhaust Manifold Header Gasket Kit for GM LS Engines — 2 Gaskets + 12 Bolts, High-Temp Seal

High-temperature multi-layer steel (MLS) exhaust manifold header gaskets with twelve bolts, made to replace OEM part numbers for LS-series Chevy, GMC and Cadillac engines (except LS7).

These ZONFANT manifold header gaskets are a complete repair kit containing two MLS gaskets and 12 bolts, engineered to match factory fit and function for most LS-family engines. The set is designed to resist heat and prevents exhaust leaks at the manifold-to-head joint. Each kit ships tested and includes a 1-year warranty and a customer support promise for hassle-free returns.

Will these gaskets fit my engine and replace my OEM part number?

Yes — this gasket set is built to be a direct replacement for a range of Chevrolet GM OEM numbers and fits the vast majority of LS-series engines (excluding LS7). Before ordering, verify your engine code or existing part numbers to ensure compatibility.

• Replaces common OEM numbers such as 12558576, 12600530, 12620947, 12617944, 551696.
• Compatible with LS engines: LS1, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, L33, LS2, LH6, L92, L76, LY2, LY5, LY6, LC9, LFA, LH8, LMG, LS3, L98, L9H, L20, L94, LZ1, L99, L96, LC8, L77.
• Not compatible with LS7 engine series; confirm engine variant first.

What materials and features make this gasket reliable under heat?

The gaskets use multi-layer steel construction chosen for its durability in high-temperature exhaust environments. The MLS design provides a consistent sealing surface and resists warping over repeated thermal cycles, helping maintain a tight exhaust seal under load.

• Multi-layer steel (MLS) construction for temperature resilience.
• Precision cut to match OEM sealing surfaces and port geometry.
• Includes 12 replacement bolts to restore clamp force and alignment.

How difficult is installation and what comes in the package?

This is a direct-fit replacement kit intended for DIY or professional installation; standard hand tools and basic mechanical skills are typically sufficient. The package is intentionally simple—two gaskets and a set of twelve bolts—so you have everything required to fasten the manifolds back to factory torque specifications.

• Package contents: 2 MLS exhaust manifold header gaskets and 12 bolts.
• Designed as a bolt-on replacement that matches factory hole patterns.
• Installation tip: clean mating surfaces and follow torque sequence to prevent leaks.

What warranty and customer support are provided?

ZONFANT backs this kit with a 1-year warranty and offers tested products with a straightforward return policy. If you encounter fitment or quality concerns, contact the seller for troubleshooting, replacement, or refund options.

• 1-year worry-free return policy and customer support available.
• Products are tested before shipping to reduce defects on arrival.
• Instructions and compatibility reminders included to avoid ordering errors.

Who is this for: automotive technicians, DIY enthusiasts, and vehicle owners running GM LS-family engines who need a dependable, OEM-equivalent exhaust manifold gasket repair kit. If you want a durable seal that withstands high exhaust temperatures and prefer a complete kit with bolts included, this ZONFANT MLS header gasket set provides an economical, direct-fit solution to restore proper exhaust sealing and reduce noise, fumes, and performance loss associated with leaking manifolds.