3.950 MLS LH Head Gasket .040 Dodge 5.7L Hemi

The Cometic Gaskets 3.950 MLS Left-Hand Head Gasket .040 for Dodge 5.7L Hemi is a precision-engineered cylinder head gasket designed for the Mopar Gen III Hemi engine platform. This multi-layer steel (MLS) gasket features a 3.950-inch bore diameter and .040-inch compression thickness, delivering the exact sealing specifications required for driver-side installation on 5.7L Hemi applications. Cometic's engineering ensures repeatable, reliable compression sealing across engine cycles.

The .040-inch thickness is engineered to maintain proper compression ratios and cylinder head clamping load on Gen III Hemi platforms. Multi-layer steel construction provides superior resealing capability—a critical advantage in high-performance or rebuilt engine applications where multiple heat cycles demand gasket stability. The left-hand configuration ensures correct fitment on the driver's side of the 5.7L block. This gasket is manufactured to OEM-level precision and works in concert with proper head bolt torque procedures to prevent leakage, coolant weeping, and combustion blowby.

Engine builders, restoration shops, and owners performing head gasket replacement on 5.7L Hemi engines rely on matched, OEM-specification gaskets for reliable reassembly. Whether addressing a failed factory gasket, rebuilding the short block, or performing a cylinder head overhaul, this Cometic gasket delivers the compression thickness and bore size required for proper sealing. The MLS construction resists erosion and thermal cycling better than traditional composite gaskets, making it the preferred choice for applications exposed to sustained engine loads or temperature variation.