Description
SIERRA GKN U-Joint for MerCruiser Alpha One Gen II, Bravo & Vazer – 18-6406 is the new-style GKN universal-joint cross used in selected MerCruiser sterndrive driveline assemblies. It uses external retaining clips and services later Alpha One Gen II, Bravo and Vazer applications where the OEM joint and yoke configuration matches the listed interchange numbers.
This is the individual U-joint, not a complete input-shaft/yoke assembly. Confirm drive serial range and existing joint style before replacement; later Alpha One Gen II applications are listed from serial 0L949779 and Bravo from 0M111208.
Key Features
- GKN new-style universal joint
- External retaining-clip design
- Fits select Alpha One Gen II from serial 0L949779
- Fits select Bravo from serial 0M111208
- Also cross-referenced for MerCruiser Vazer and listed Volvo Penta applications
Specifications
- Sierra part number: 18-6406
- Product type: Universal joint
- Joint style: GKN new style
- Retainers: External clips
- MerCruiser Alpha One Gen II: 0L949779 and up select applications
- MerCruiser Bravo: 0M111208 and up select applications
Interchange
- Mallory: 9-72413, 9-72414
- MerCruiser: 865493A01, 865496A01, 865496A02, 865510T, 865511T
- Volvo Penta: 3860232, 854619
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