Fasteners› Bulk Fasteners

Engineered Marine Products

LOCKNUT 7/1620

$24.59

SKU: E051 11-05164

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Non-Returnable Item

Description

The Engineered Marine Products 11-05164 is a locknut with a 7/16-20 thread size. This fastener is designed for use with 1967 and later Mercury/Mariner outboard propshafts, gimble ring assemblies, driveshafts, and other applications.

This locknut replaces several Mercury OEM part numbers, including 859116, 34933, 134391, and 29241, among others. It also crosses with part numbers from Sierra (18-3721), GLM (21170), and Mallory (9-72004).

Fitment

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Specifications

BrandEngineered Marine Products
Part NumberE051 11-05164

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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