Engineered for Excellence and Efficiency

Enhance your engine performance with the FASWORX cast iron exhaust manifold, exhaust gaskets, plugs, and bolts—a premium aftermarket solution for your Mercruiser 4.3L V6 Engine (2002 and newer). These robust exhaust manifolds for V6 engines, weighing about 40 lbs. each, are engineered to match OEM specs, ensuring a perfect fit for your wet joint exhaust systems and part number 864612T02. Each manifold has strong cast iron and a protective coating to ensure that the manifolds can withstand deterioration in both freshwater and saltwater environments.

Why Cast Iron Is the Choice for Serious Boaters?

Compared to carbon steel or stainless steel, your cast iron Mercruiser manifold is superior in durability, longevity, performance, and more. It can improve your engine's exhaust flow, translating to better fuel efficiency and enhanced output. Cast iron can also withstand overheating and vibration, so you can trust there is smooth sailing ahead and a reduced risk of cracks and gasket blows. Whether you enjoy laid-back cruising, fishing excursions, or thrilling watersports, your FASWORX manifold will optimize your engine for power and efficiency.

Trust FASWORX for a Job Well Done

Set sail with renewed confidence and enhanced engine performance. Decades of on-water experience inform our expertly engineered marine parts designed for mechanics and DIY boaters alike, keeping your engine in peak operating condition.

Don't let engine troubles keep you ashore; choose FASWORX parts and enjoy a smoother, more reliable experience.