Exhaust bellows for MerCruiser sterndrives are a flexible spare part for the sterndrive's exhaust system. The bellows conduct exhaust gases through the drive installation and are intended for applications that cross-reference to part number 18654A1.
The product is specifically an exhaust bellows and must not be confused with a transmission bellows, driveshaft bellows, or shift cable bellows. The correct type of bellows is essential, as the parts have different functions and mounting locations on the sterndrive.
The cross-reference 18654A1 links the bellows to selected MerCruiser sterndrives, including MC-I, MR, Alpha One, Alpha One Gen II, Vazer, Bravo, and Blackhawk. Compatibility applies to selected applications from 1963 and newer and must therefore be verified against the drive's serial number and parts catalog.
Part references
Part number 18654A1 has subsequently been replaced in the Mercury system by 8M0124227. The older numbers 32734 and 18654B1 are also documented in the same replacement history. Further cross-references include 32734A3, Sierra 18-2750, GLM 89100, Mallory 9-72703, and CEF 500512K.
Always check the engine/drive model, serial number, and original part number before purchasing.
Important featuresExhaust bellows for MerCruiser sterndrives
For diverting exhaust gases through the drive installation
Direct cross-reference: 18654A1
Current OEM replacement for the reference: 8M0124227
Compatible with selected MC-I, MR, Alpha, Vazer, Bravo, and Blackhawk drives
Sales unit: 1 pc.
