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Sierra 18-6285 Tilt/Trim Motor for Johnson/Evinrude OMC Outboards

Manufacturer

Sierra

<h3>Sierra: Six Decades of Marine Aftermarket Excellence</h3><p><strong>Sierra</strong> has spent nearly 60 years earning its reputation as one of the most trusted names in the marine aftermarket industry. Originally focused on engine and drive components for boats, the brand has grown into a comprehensive source for nearly everything a boater needs to keep their vessel running at its best — from precision instrumentation to complete engine rebuild hardware.</p><p>Now operating as a brand of Dometic, Sierra manages global aftermarket distribution from a 300,000 sq. ft. facility in Litchfield, Illinois. The Sierra brand today encompasses not only its flagship marine parts line but also well-established marine names like Shields and Moeller, offering boaters a broader catalog than ever before. Whether you own an outboard, inboard, or sterndrive, Sierra's engineering team designs products to meet or exceed OEM specifications.</p><h3>Precision Instrumentation You Can Trust on the Water</h3><p>One of Sierra's most recognized product areas is its marine instrumentation lineup. The brand's <a href="/7570-sierra-gauge-set-1480">gauge sets</a> cover everything from classic analog instrument clusters to advanced digital multi-function displays. Sierra offers packages suited to outboards, sterndrives, and gasoline-powered inboards, with options ranging from coordinated analog kits in styles like Arctic, Eclipse, and Amega to modern touchscreen solutions like the R3 multi-function gauge. Features such as scratch-resistant domed glass lenses, silicone-dampened pointers, and perimeter backlighting make these instruments highly readable in all conditions.</p><p>Behind every accurate gauge reading is a properly calibrated sending circuit. Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> are a critical part of that chain, ensuring the signals from sensors and sending units are correctly interpreted by your instruments. These components are built to marine-grade standards to resist moisture, vibration, and corrosion — the realities of life on the water.</p><h3>Engine Internals Built to OEM Standards</h3><p>Sierra's history in marine power is perhaps best demonstrated by its deep catalog of engine components. The brand's <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> cover a wide range of outboard and inboard applications and are engineered to deliver reliable seals in the demanding thermal and chemical environment of a marine engine. For boaters performing seasonal overhauls, top-end rebuilds, or full engine restorations, Sierra gasket kits are a go-to resource trusted by professional marine technicians and DIY boaters alike.</p><h3>A Complete Marine Parts Partner</h3><p>Beyond instrumentation and engine internals, Sierra's catalog spans fuel systems, electrical supplies, steering components, shore power, and more — all covered by what the brand calls an industry-leading warranty. Sierra also maintains a comprehensive parts-finder tool that enables cross-referencing with OEM part numbers from major manufacturers including Mercury, Yamaha, Suzuki, Volvo Penta, and others, making it straightforward to find the right replacement part for virtually any application.</p>

Part Number

18-6285
09/12/2036 10:36 AM
Sale Price

$200.26

3 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Sierra 18-6285 is a heavy-duty replacement tilt/trim motor engineered as a direct replacement for Johnson and Evinrude (OMC) outboard engines. Designed to restore reliable power trim and tilt operation, this motor is built to meet or exceed OEM specifications for a precise, confidence-inspiring fit.

Key Features:

  • Direct OEM Replacement: Replaces OMC part number 433226 (0433226) and cross-references ARCO 6243
  • Heavy-Duty Construction: Built to meet or exceed original OMC specifications with design upgrades for improved durability
  • 2-Wire Connection: Simplified wiring with male spade terminals for straightforward installation
  • Hollow Hex Shaft: Features a 5mm female hex hollow shaft (8mm OD) for proper engagement with the trim pump drive
  • 4-Bolt Mount: Secure 4-bolt mounting configuration matches original equipment mounting points
  • 12V Reversible Motor: Operates on standard 12-volt marine electrical systems with reversible rotation
  • O-Ring Included: Comes with the necessary O-ring for a complete, leak-free installation
  • Field Housing OD: 63.6mm (2.504 in); Overall Length: 124mm (4.882 in)

Replaces OEM Part Numbers: 433226, 0433226 | Cross-References: ARCO 6243, Sierra 18-6285

Sierra International tilt/trim motors are a trusted choice for marine technicians and DIY boaters looking for a reliable, cost-effective alternative to expensive OEM parts. The included O-ring and direct-fit design make this a complete drop-in replacement for applicable M-suffix 40, 48, and 50 HP Johnson and Evinrude outboards from 1989–1992.

Products specifications

Compatibility

For Heavy Duty OMC (1989-92) M Suffix 404850 HP

Type

Trim Tilt Motors

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Quick and direct to my part

Great price and nice shipping discount coupon

Great price and easy checkout!!! Fantastic!!!!

easy and effective. No problems. enjoyed the service.

Wicked fast shipping! 3 days from California to Key West, Florida! We are amazed by this super fast service. Part is brand new and fits perfectly! Will use you again and HIGHLY recommend you!

good price---hope it ships quick---excited for my build

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