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Sierra 18-9874 Mercruiser Drive Shaft Preload Tool

Manufacturer

Picture for manufacturer Sierra

Part Number

18-9874
12 reviews
Sale Price

$495.22

1 left at this price

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Usually delivered within 2 days

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Product Details

The Sierra 18-9874 Drive Shaft Preload Tool is a specialized marine service tool designed for accurate sterndrive gear setup. It preloads the drive shaft bearing during pinion height and backlash checks, ensuring precise gear alignment and correct sterndrive assembly.

Key Features:

  • Preloads the drive shaft bearing when checking pinion height and backlash
  • Compatible with Mercruiser MC-I, R-MR, Alpha One, and Alpha One Gen II stern drive units and outboards
  • Direct aftermarket replacement for OEM Mercury Marine special service tools
  • Essential tool for professional-grade sterndrive gear case service and rebuilds

Replaces OEM Part Numbers:

  • Mercury Marine: 91-14311A1, 91-14311A2, 91-14311A04, 91-44307A1

The Sierra 18-9874 is a cost-effective alternative to OEM Mercury Marine tooling, meeting the same service requirements for proper drive shaft bearing preload during sterndrive maintenance and rebuild procedures.

Nice site easy-to-use check out

great price

N/A

Quantities are questionable on the descriptions?

excellent, fast and efficient!

good

Great so far! Prices are very reasonable!

Always a great price and fast shipping.

AAA+

great price and quick shipping !!!

This site was the cheapest I found a Optima Redtop for my Corolla S 2007 and the shipping was FREE! Happy camper here.

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