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Retaining Nut for MerCruiser R-MR Alpha I Gen II 816811-2 8168111 18-3752
$48.39
Sale price
$48.39
Regular price
Available to Order
This Retaining Nut is a replacement retaining nut compatible with MerCruiser R-MR Alpha I Gen II and matches OEM Part# 816811-2, 8168111, 18-3752.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
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Product Overview
This retaining nut is designed for MerCruiser R-MR Alpha I Gen II outdrives, securing components in the drive assembly. It is a critical fastener for maintaining proper alignment and torque. Boat owners and marine mechanics rely on this retaining nut for reliable performance.
Key Features & Performance
- Precision-threaded to match MerCruiser specifications.
- Corrosion-resistant material suitable for marine environments.
- Ensures secure retention of drive shaft components.
- Direct replacement for OEM part numbers 816811-2, 8168111, and 18-3752.
- Easy installation with standard tools.
Fitment & Compatibility
- MerCruiser R-MR Alpha I Gen II outdrives.
Common Uses
- Securing the propeller shaft or other rotating components on MerCruiser Alpha I Gen II drives.
- Replacing worn or damaged retaining nuts during routine drive maintenance.
- Used in marine engine and outdrive repair or rebuild projects.
Technical Specifications
- Material: Corrosion-resistant steel
- Thread Size: As per OEM specifications
- Part Number(s): 816811-2, 8168111, 18-3752
Frequently Asked Questions
Q: Will this retaining nut fit my MerCruiser Alpha I Gen II? A: Yes, it is specifically designed for the R-MR Alpha I Gen II outdrive and matches OEM part numbers 816811-2, 8168111, and 18-3752.
Q: Is this nut reusable after removal? A: It is generally recommended to replace retaining nuts with new ones during reassembly to ensure proper torque and locking ability.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.