Pinion Stud for MerCruiser 43-8M0113182 43-8183811 43-818381 43-8183812 Drives

Pinion Stud for MerCruiser

This pinion stud for MerCruiser is a direct replacement drive component that secures the pinion gear in the lower gearcase, with OEM cross-reference numbers 43-8M0113182, 43-8183811, 43-818381, and 43-8183812.

Overview

This pinion stud for MerCruiser is a service replacement part used to hold the pinion gear within the drive assembly. Designed for MerCruiser drives, this pinion stud replaces worn or broken studs and supports proper gear engagement in the lower gearcase. It matches OEM cross-reference numbers 43-8M0113182, 43-8183811, 43-818381, and 43-8183812.

Built For Performance

• Machined to match the original pinion stud geometry for MerCruiser drives
• Replaces OEM part numbers 43-8M0113182, 43-8183811, 43-818381, and 43-8183812
• Threaded shank helps secure the pinion gear in the drive assembly
• Steel construction built for marine drive conditions
• Drop-in design intended for lower gearcase service

On-The-Job Use

• Replacing a worn pinion stud during lower gearcase overhaul
• Securing the pinion gear when rebuilding the drive assembly
• Restoring correct pinion gear mounting in marine shops and DIY maintenance
• Supporting sterndrive repair on vessels powered by for MerCruiser drives

Specs At A Glance

Good To Know

Q: Will this pinion stud fit the drive models that use this part number? A: It is intended for MerCruiser drives that use the listed OEM part numbers, so verify your specific drive before ordering.

Q: What should I check during installation? A: Inspect the pinion gear bore and mating threads for damage, then torque the stud to the specifications in your service manual.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.