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This product has been discontinued by the manufacturer and has been superseded by Sierra 18-3722-9
Sierra 18-3722 Stainless Steel Locknut
Sierra high quality parts are designed to meet OEM specifications.
- Stainless Steel with nylon insert
- Thread Size: 1/4" - 28
Interchangeable with:
- Chrysler/Force/US Marine
- 11-20361
- F1641
- GLM
- 21180
- Johnson/Evinrude Outboard
- 121731
- Mallory
- 9-72001
- 9-72001-10
- Mercruiser Stern Drive
- 11-35888
- 11-20361
- 11-8267089
- Mercury Marine
- 11-35888
- 11-46886
- 11-29322
- 11-27871
- 11-8267089
- 11-98451
- OMC Stern Drive
- 121731
- Volvo Penta
- 3852005
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra 18-3722 Stainless Steel Locknut
- Product MPN
- 18-3722
- Product UPC
- 30999316417
- Discontinued
- Yes
- Interchangeable with:
- Chrysler/Force/US Marine 11-20361
- Interchangeable with:
- GLM 21180
- Interchangeable with:
- Volvo Penta 3852005
- Interchangeable with:
- OMC Stern Drive 121731
- Interchangeable with:
- Johnson/Evinrude 121731
- Interchangeable with:
- Chrysler/Force/US Marine 11-20361, F1641
- Interchangeable with:
- Mallory 9-72001, 9-72001-10
- Interchangeable with:
- MerCruiser 11-35888, 11-20361, 11-8267089
- Interchangeable with:
- Mercury 11-35888, 11-46886, 11-29322, 11-27871, 11-8267089, 11-98451
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