Description
SIERRA MerCruiser 7SI 70A Serpentine Alternator, 50 mm Pulley – 18-6298
The SIERRA MerCruiser 7SI 70A Serpentine Alternator, 50 mm Pulley – 18-6298 is a fit-specific marine replacement component for selected MerCruiser 100 Vazer, 2001 and newer GM V6/V8, 496 Mag/HO and MIE 8.1 L/HO applications. It is intended for applications matching the listed engine fitment and OEM/aftermarket interchange. Confirm the engine model, year or serial range, and original part number before installation.
- Fit-specific marine alternator for selected MerCruiser 100 Vazer, 2001 and newer GM V6/V8, 496 Mag/HO and MIE 8.1 L/HO applications
- Output: 70 A
- Alternator Family: 7SI
- Mounting: Hinge
- Direct aftermarket interchange for the listed OEM/aftermarket references
Specifications
- Manufacturer: Sierra
- Part Number: 18-6298
- Product Type: Marine Alternator
- Application: selected MerCruiser 100 Vazer, 2001 and newer GM V6/V8, 496 Mag/HO and MIE 8.1 L/HO applications
- Output: 70 A
- Alternator Family: 7SI
- Mounting: Hinge
- Pulley Type: Serpentine
- Pulley Diameter: 50 mm
- OEM / Aftermarket Interchange: ARCO 20815; Mallory 9-19111; MerCruiser 863077T
- UPC: 808282187385


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