SIERRA MerCruiser Alpha One Gen II U-Joint Bellows – 18-2747

Description

SIERRA MerCruiser Alpha One Gen II U-Joint Bellows – 18-2747

Drive-shaft/U-joint bellows for MerCruiser Alpha One Gen II drives from 1991-up and Vazer applications using OEM 816431A1. 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 Alpha One Gen II drives from 1991-up and Vazer applications using OEM 816431A1
• Function: Seals the drive-shaft/U-joint cavity against water while allowing the sterndrive to steer and trim.
• Component: U-joint / drive-shaft bellows
• Drive family: Alpha One Gen II / Vazer
• Interchange: GLM: 89180; Mallory: 9-72704; Mercruiser Stern Drive: 816431A1

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 family: Alpha One Gen II / Vazer
• Typical application: 1991-up
• Package contents: Bellows with flange ring/ground clip/clamp as supplied

Interchange / Replaces

• GLM: 89180
• Mallory: 9-72704
• Mercruiser Stern Drive: 816431A1

Related Products

• Cross-sell / related: EMP-61-02691 | SIE-18-1728 | SIE-18-9031-1
• Relationship notes: EMP 61-02691 is a verified direct alternative. 18-1728 is the Alpha Gen II flange ring and 18-9031-1 is bellows adhesive.