Part number lookup
18-2732-9 Replacement Parts
Cross-reference and compare 2 replacement listings for OEM / aftermarket part number 18-2732-9. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
2 Matching Products
Part Numbers and Cross References
Applications and Fitment Summary
- 1982-1998 Mercruiser 5.0L 5.7L V8 & 4.3L V6 Designed for MerCruisers Engines 1982-1996, there are some 1996 and 1997 models that apply. Fits the oval 4" Y-pipes with round pin holes. If you have two rectangular holes for the grommets you will need the A1 water shutter. If your Y-pipe changes size a few inches bellow the shutter you have a one piece manifold V6 Y-pipe and need shutter A2.
- Mercruiser · 1982-1998 Mercruiser 5.0L 5.7L V8 & 4.3L V6 Designed for MerCruisers Engines 1982-1996, there are some 1996 and 1997 models that apply. Fits the oval 4" Y-pipes with round pin holes. If you have two rectangular holes for the grommets you will need the A1 water shutter. If your Y-pipe changes size a few inches bellow the shutter you have a one piece manifold V6 Y-pipe and need shutter A2.
Frequently Asked Questions
What parts replace OEM number 18-2732-9?
This page lists 2 replacement listings indexed under 18-2732-9. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 18-2732-9?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if 18-2732-9 is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.