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Engineered Marine Products 12-02668 Brass Castle Washer

Manufacturer

Engineered Marine Products

<h3>About Engineered Marine Products (EMP)</h3><p><strong>Engineered Marine Products</strong>, widely known in the boating world as <strong>EMP</strong>, has been a trusted name in marine parts manufacturing for over 40 years. The company supplies OEMs, distributors, dealers, and rebuilders worldwide with high-quality aftermarket components engineered to meet or exceed original equipment manufacturer (OEM) specifications. Whether you maintain a weekend fishing boat or a performance inboard, EMP&apos;s extensive catalog is built to keep marine engines running reliably season after season.</p><h3>A Marine Parts Specialist Built on Engineering Precision</h3><p>EMP&apos;s foundation is precision manufacturing. Their design and production processes leverage modern engineering technology, with a focus on dimensional accuracy, material quality, and long-term durability in the demanding marine environment. Salt spray, constant vibration, wide temperature swings, and moisture ingress are realities every marine component must survive — and EMP engineers its parts with exactly those conditions in mind.</p><p>The brand&apos;s catalog spans a remarkably wide range of marine engine subsystems. From cooling and fuel delivery to gearcases, propellers, transom components, and steering systems, EMP offers solutions for outboard engines from manufacturers including Mercury/Mariner, Yamaha, BRP (Johnson/Evinrude), and Force, as well as inboard/sterndrive platforms such as MerCruiser, OMC, and Volvo Penta.</p><h3>Ignition and Electrical Components</h3><p>One of EMP&apos;s most comprehensive product areas is marine ignition and electrical systems. Their <a href="/13199-engineered-marine-products-ignition-control-module-10488">Ignition Control Modules</a> and related ignition components cover a broad spectrum of inboard and outboard applications — from distributor caps and rotors for Volvo Penta V8 engines to ignition coil assemblies compatible with MerCruiser 3.0L through 8.4L GM-based powerplants and OMC configurations. Reliable spark delivery is critical to engine performance and starting consistency on the water, and EMP&apos;s ignition lineup is designed to deliver dependable output across the entire RPM range.</p><h3>Gaskets, Seals, and Engine Integrity</h3><p>Keeping a marine engine leak-free is just as important as keeping it firing correctly. EMP&apos;s <a href="/13199-engineered-marine-products-gaskets-seals-201268">Gaskets &amp; Seals</a> lineup addresses the full range of engine and gearcase sealing needs — including gearcase seal kits, Teflon lip seals, fuel injector crush ring kits, and comprehensive engine gasket sets. Proper sealing prevents water intrusion, oil loss, and exhaust leaks that can quickly sideline a boat and lead to expensive engine damage.</p><h3>Why Boaters and Technicians Choose EMP</h3><ul style="list-style:disc"><li><strong>OEM-Grade Quality:</strong> Parts are engineered to meet or exceed original manufacturer specifications, ensuring proper fit and reliable function.</li><li><strong>Broad Application Coverage:</strong> EMP covers major outboard and inboard/sterndrive platforms from leading marine engine brands.</li><li><strong>Trusted Supply Chain:</strong> EMP products are sold through OEMs, distributors, and dealers globally, reflecting deep industry confidence in the brand.</li><li><strong>40+ Years of Manufacturing Heritage:</strong> Decades of marine-specific engineering experience inform every product in the EMP lineup.</li></ul><p>For boat owners, marine technicians, and engine rebuilders who demand components they can count on, Engineered Marine Products delivers the quality and application coverage to get the job done right.</p>

Part Number

12-02668
09/12/2036 5:41 AM
Sale Price

$14.34

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Product Details

The Engineered Marine Products 12-02668 is a brass castle washer designed for securing propeller hardware on Mercury and Mercruiser marine engines. This precision-engineered locking washer provides a mechanical barrier to prevent propeller nuts from loosening during operation.

Key Features:

  • Constructed from corrosion-resistant brass material for marine environments
  • Castle design with notches that engage with locking mechanisms to prevent rotation
  • Fits between the propeller nut and mating surface for secure fastening
  • Designed for splined rubber hub propellers (non-Flo-Torq II applications)
  • Tabs are bent around the nut after installation to lock the assembly in place

Application: Compatible with Mercury/Mariner 135-275 HP (V6 2-cycle) outboards, Alpha drives, and Bravo I drives without Flo-Torq II hubs. This washer replaces OEM part numbers 12-31211, 12-31211A2, 12-31211A3, 12-31211Q03, and cross-references with Sierra 18-3714, GLM 21360, and Mallory 9-73902.

Engineered Marine Products manufactures quality marine engine components using advanced technology and precision manufacturing processes, backed by over 40 years of industry experience.

HOPE I GET THE Part Quickly

Good so far awaiting shipments

ok

Nice and easy. Thank you

Great price Awesome so far

:]

So far very good

Easy Ordering.

good

OK - would use payapl but didn't see how

I have no comment right now. 1st timer

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