Exhaust Manifold Set GM LS Rear Dump

The Exhaust Manifold Set GM LS Rear Dump from HOOKER is designed for serious boaters and marine engine builders looking to upgrade LS-series powerplants. This manifold set is ideal for those installing modern LS engines in classic boats or optimizing airflow in high-output ski tower installations.

Constructed from heavy-duty cast iron with a natural finish, the HOOKER 8505HKR manifolds feature a 2.5-inch outlet diameter that balances scavenging efficiency with manageable backpressure, essential for marine engines operating at various throttle levels. The rear-dump configuration effectively prevents exhaust gases from flowing through underbody passages, reducing heat buildup in tight engine compartments.

This exhaust manifold set fits all GM LS-series engines and is suitable for marine applications when paired with appropriate components for either freshwater or saltwater use. Its robust design ensures durability against thermal cycling and exposure to saltwater spray, making it a reliable choice for marine environments.