Exhaust Gaskets Mopar V8 5.7L Hemi L&R 03-Up

The REMFLEX Exhaust Gaskets for Mopar V8 5.7L Hemi engines (2003 and up) are premium header and manifold gaskets engineered to seal the rectangular port interface between the exhaust headers and cylinder head. This left and right pair features graphite gasket material optimized for the Gen III Hemi platform, delivering a leak-free seal that resists thermal cycling and combustion pressures inherent to high-output V8 applications.

The 1.500 x 1.437 inch rectangular port dimensions match factory Mopar specifications for direct bolt-on installation. Graphite composition provides superior heat resistance and conformability compared to traditional cork or composite gaskets, allowing the material to compress and adapt to subtle variations in port surfaces while maintaining a tight seal across repeated heat cycles. Each gasket in the pair is sized to prevent exhaust leaks that compromise scavenging efficiency and create underhood noise problems common on aging or modified Hemi powerplants.

This product is essential for Mopar Hemi engine builds, restorations, and performance modifications where factory gaskets have deteriorated or failed. Whether managing a 2003–2008 Dodge truck platform, a Chrysler 300C, or a custom swap application, the pair covers both driver and passenger-side header ports, eliminating the need to source gaskets separately. REMFLEX gaskets are recognized in the Mopar performance community for their longevity and consistency across ambient and operating temperature ranges.