My Account
Shopping Cart

Sierra 18-2109 Power Trim Hose for Mercruiser MC-I Stern Drives - 32 Inch

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

18-2109
09/12/2036 6:29 AM
Sale Price

$70.49

2 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 18-2109 is a premium-quality replacement power trim hose designed specifically for Mercruiser MC-I stern drives with serial numbers 3780850-6225576. This essential hydraulic component connects the trim cylinder to the valve, enabling proper operation of the power trim system that allows operators to adjust the drive angle for optimal boat performance.

Key Specifications:

  • Hose Length: 32 inches
  • Fitting Size: 1/8 inch fittings on both ends
  • Application: Connector to valve connection
  • Construction: Braided hydraulic hose with stainless steel fittings for durability in harsh marine environments

Replaces OEM Part Numbers:

  • Mercury Marine: 32-59842, 32-73005
  • Mallory: 9-71505
  • GLM: 26080

Sierra marine parts are engineered to meet or exceed OEM specifications and are backed by a limited lifetime warranty covering the useful life of the product against defects in workmanship and materials. This replacement hose is designed to withstand the demanding conditions of marine hydraulic systems, providing reliable performance for years to come.

Products specifications

Compatibility

Replaces Mercruiser 32-59842

Type

Trim Motor Parts

Very easy and intuitive!

Site is simple and easy to use.

Very good, and really good prices.

thanks

Awesome

Quick and convenient.

yes experience.

Excellent place to deal with. I am a returning customer and love the fast shipping!!

So far so good. Time will tell.

Awesome as always

U guys R fantastic fast shipping and good prices

Easy ordering,and cheapest I found anywhere for the same product. My order came quick and it was exactly what I expected. Great experience.

Cheap price

the amazon payment did not work; hope I don't get double billed since I went with paypal afterwards. Meanwhile, I could not verify that my amazon order is cancelled/never placed.

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