Total Price:
Add to CartWhen in need of a MerCruiser manifold replacement, Wholesale Marine carries economical options to get you back on the water fast. Sierra has engineered a manifold replacement kit that includes the gaskets, spacers, and elbows so a complete manifold replacement can be installed quickly and easily. The unit is manufactured to be installed on either port or starboard engine block. Replacement manifold is designed for MerCruiser but can also replace manifolds for other brands including Barr, GLM, Mallory, and Marine Power among others. The unit is ideally suited for freshwater applications. You can depend on Wholesale Marine to guarantee the lowest prices.
Application Info:
MerCruiser V8 454 or 502 CID engines made by GM between 1981 and 2002.
Interchangeable with:
Use With:
What is the Sierra 18-1957-2 MerCruiser V8 GM Exhaust Manifold used for?
The Sierra 18-1957-2 is a replacement exhaust manifold designed for compatible MerCruiser V8 engines manufactured by GM. The manifold can be installed on either the port or starboard engine block and is ideally suited for freshwater applications.
What MerCruiser engines does the Sierra 18-1957-2 Exhaust Manifold fit?
The Sierra 18-1957-2 is designed for MerCruiser V8 454 or 502 CID engines made by GM between 1981 and 2002. Verify your engine's displacement, manufacturer, and model year before purchasing to confirm compatibility.
Does the Sierra 18-1957-2 Exhaust Manifold fit either side of the engine?
Yes. The Sierra 18-1957-2 Exhaust Manifold is manufactured for installation on either the port or starboard engine block, allowing it to be used on either side of a compatible engine application.
What brands and part numbers does the Sierra 18-1957-2 replace?
The Sierra 18-1957-2 is interchangeable with MerCruiser 807078Q07 and 807078T08, Barr MC-1-89011, GLM 51240, HGE 9011, Mallory 9-40506, Marine Power 0991-1000, and Osco 9011.
Is the Sierra 18-1957-2 Exhaust Manifold suitable for freshwater applications?
Yes. The Sierra 18-1957-2 Exhaust Manifold is ideally suited for freshwater applications. The product description does not state that it is intended for saltwater applications, so verify the application before installation.
What components can be used with the Sierra 18-1957-2 Exhaust Manifold?
The Sierra 18-1957-2 can be used with specified exhaust manifold and elbow gaskets, mounting kits, manifold riser spacers, elbows, and manifold spacers. Verify the specific component part numbers against your application before ordering.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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