Sierra 18-4367 MerCruiser 2.5L/3.0L Manifold Gasket Set
- Brand:
- Sierra
- Part no:
- 18-4367
Image: Wholesale Marine
Where to buy
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The Sierra 18-4367 is an exhaust manifold gasket set for MerCruiser engines, the GM 153 and 181 CID units of 2.5 and 3.0L. It is listed for 120 and 140 HP applications. Fit is specific: serial numbers 6229718 and up, on engines with Siamese port cylinder heads. It is listed as interchangeable with Barr Marine MC47-27-99777A1, so you can cross-check the number against that.
Our take
The set is specified for serial numbers 6229718 and up with Siamese port cylinder heads, so the serial number and head type decide whether it fits, not just the 2.5L or 3.0L size. Check both on your engine first.