Description
SIERRA MerCruiser Bravo/Blackhawk U-Joint Bellows – 18-2756
U-joint/drive-shaft bellows with clamp for MerCruiser Bravo and Blackhawk drives using OEM 86840A3 / 86840A05 / 8M0062406. It is intended as an application-specific replacement for the original marine component and is cross-referenced by the OEM/aftermarket numbers listed below.
- Application: MerCruiser Bravo and Blackhawk drives using OEM 86840A3 / 86840A05 / 8M0062406
- Function: Seals the U-joint and drive-shaft cavity against water while allowing drive articulation.
- Component: U-joint / drive-shaft bellows
- Drive families: Bravo / Blackhawk
- Interchange: GLM: 89140; Mallory: 9-72702; Mercruiser Stern Drive: 86840A05, 86840A3, 8M0062406
Confirm the engine or sterndrive model, serial range and original part number before installation. During service, inspect adjacent seals, fasteners, hoses and mating surfaces so a related fault is not carried into the repaired assembly.
Specifications
- Component: U-joint / drive-shaft bellows
- Drive families: Bravo / Blackhawk
- Includes: Clamp
Interchange / Replaces
- GLM: 89140
- Mallory: 9-72702
- Mercruiser Stern Drive: 86840A05, 86840A3, 8M0062406
Related Products
- Cross-sell / related: EMP-61-02690 | SIE-18-1710 | SIE-18-9031-1
- Relationship notes: EMP 61-02690 is a verified direct alternative. 18-1710 is the Bravo flange ring and 18-9031-1 is bellows adhesive.


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