11-52707Q1 Propeller Nut Tab Washer Kit for Mercury Force | JLM Marine

Propeller Nut Tab Washer Kit – Fits Mercury & Force Outboards

This Propeller Nut Tab Washer Kit is designed to fit a wide range of Mercury and Force outboard engines, including 2-stroke and 4-stroke models from 30 HP to 300 HP. Compatible with V6, inline 4-cylinder, and 3-cylinder configurations, as well as sterndrive applications (Alpha One, Bravo series, and more), this kit ensures secure propeller mounting across multiple engine series.

Direct Replacement for: Mercury 11-52707Q1 / 11-52707T1 and Sierra 18-3701. This aftermarket kit delivers reliable performance and proper fitment for your propeller assembly.

• Essential hardware for safe propeller installation and retention
• Fits both outboard and sterndrive applications
• Compatible with carbureted and EFI engines

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This kit includes the following components:

• Propeller Nut Tab Washer

Installation Guide

1. Disconnect the battery and ensure the engine is off and cool.
2. Remove the old propeller nut, cotter pin (if applicable), and existing tab washer from the propeller shaft.
3. Inspect the propeller shaft for damage, corrosion, or debris; clean thoroughly if needed.
4. Slide the new tab washer onto the propeller shaft with the tab portion oriented correctly (refer to your service manual).
5. Install the propeller onto the shaft, ensuring the splines engage fully.
6. Thread the propeller nut onto the shaft and tighten to the manufacturer's specified torque (typically 55–80 ft-lbs; consult your engine manual).
7. Bend one tab of the washer up against a flat on the propeller nut to lock it in place.
8. If your assembly uses a cotter pin, insert it through the shaft hole and spread the ends to secure.
9. Verify that the propeller spins freely without wobble or binding.
10. Reconnect the battery and perform a brief test run in open water to confirm proper operation.

Troubleshooting & FAQ

Q: How do I confirm this tab washer kit fits my engine?
A: Cross-reference your engine model and year with the compatibility table above, or verify the OEM part number (Mercury 11-52707Q1 / 11-52707T1 or Sierra 18-3701) against your engine's parts diagram.

Q: What is the difference between this aftermarket kit and the OEM version?
A: This aftermarket kit is manufactured to OEM specifications using comparable materials and fits identically. It offers reliable performance at a competitive price, though it is not an OEM component.

Q: How often should I replace the tab washer?
A: Replace the tab washer any time you remove the propeller or if the tabs are bent, cracked, or damaged. Do not reuse a tab washer that has been bent multiple times, as metal fatigue can compromise safety.

Q: Can I reuse the old tab washer if it looks okay?
A: It is not recommended. Tab washers are designed for single-use locking; once bent, the metal fatigues and may not provide secure retention on reinstallation.

Q: What are common signs that my propeller hardware needs replacement?
A: Loose propeller, vibration during operation, visible corrosion or cracking on the washer, or a propeller nut that does not stay torqued. Inspect hardware regularly, especially after striking underwater obstacles.

Q: Is this an OEM or aftermarket part?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.