My Account
Shopping Cart

Sierra 18-5656 Marine Starter Drive Assembly

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

18-5656
09/11/2036 4:10 AM
Sale Price

$31.82

In Stock (8)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-5656 is a premium marine starter drive assembly designed to deliver reliable engine starting performance for your outboard motor. This direct replacement component ensures proper engagement between your starter motor and flywheel, providing dependable starts season after season.

Key Features:

  • Direct replacement for Mercury Marine and OMC outboard motors
  • Precision-engineered drive gear for smooth engagement and extended service life
  • High-quality construction designed to withstand harsh marine environments
  • Meets or exceeds OEM specifications for fit and performance

OEM Cross-References:

  • Replaces Mercury Marine 68575
  • Replaces OMC 385949

Sierra International is a trusted name in marine engine parts, known for manufacturing reliable aftermarket components that deliver OEM-quality performance at competitive prices. This starter drive assembly is an essential component for maintaining your outboard motor's starting system.

Products specifications

Compatibility

Replaces Mercury 68575 (10 Tooth)OMC 385949

Type

Engine Parts

Great experience...price was unbeatable and customer service was very responsive.

Fast shipping, great product. Nothing more needs to be said.

Easy to find needed parts

You sent me an email, with 30offtshipping code. Not sure if it worked.

I found your site very easy to get around in.

Easy. I like the amazon sign in.

Shopping is easy!

good. hopefully it ships in a timely matter.

Ordered on Sunday, called on Monday for tracking #, received product on Tuesday, and received tracking # on Wed!! I got the item before Autoplicity got a chance to send me the email with the tracking #. A+++!!!

Not sure yet can reply later

Good prices

Found autoplicity using google shop. You had the lowest price so I decided to try it out. I havent heard of autoplicity otherwise, so far i'm impressed.

I did a pretty extensive search looking for a good price on a specific set of Autogage gauges. They had the best price and were in stock with quick notification of shipment. Order # 27510 should be here soon so I can finish my project. Would so business with again.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy