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

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-6285
07/11/2036 2:30 AM
Sale Price

$198.41

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

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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Great pricing

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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