Mercruiser GM Small Block Exhaust Manifold | Sierra 18-1953-2
Mercruiser GM Small Block Exhaust Manifold | Sierra 18-1953-2
Sierra
63 in stock
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Mercruiser GM Small Block Exhaust Manifold | Sierra 18-1953-2
Center rise exhaust manifold fits Mercruiser GM 5.0L & 5.7L CID marine engines.
- Mercruiser GM Small Block Exhaust Manifold
- Direct replacement manifold fits Mercruiser GM V8 305, 350, 377, and 383 cu. in. engines with center riser
- For Mercruiser 898R, 228R, & 260R model engines
- Interchangeable between port and starboard side
- Heavy duty cast iron
- Painted black
- Includes all gaskets, manifold mounting bolts, drain elbow, and plugs
- Manifold mounting kit P/N 18-8520 – sold separately
- Replaces Mercruiser 860336A2, 87114A8, 87114A19, 860246A3, 860246A9, 87114A30, 860337A2, 860246A7, 860246A10, 860246A15 | Replaces Osco 7114B2 | Replaces Sierra 18-1953, 18-1953-1
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.