Sierra Power Trim Hose 18-2109, 32 Inch, Replaces Mercury Marine 32-59842, Fits MC-I Drives

The Sierra 18-2109 Power Trim Hose is a 32 inch rubber hose designed for the power trim system on MC-I drives, connecting the trim pump to the trim cylinder circuit. It is built from rubber construction in a white finish and sized with a 1/8 inch fitting connection and a 0.13 inch outside diameter, matching the dimensions of the original equipment hose it replaces. This hose serves as a direct replacement for Mercury Marine part number 32-59842, giving boat owners and marine technicians a straightforward way to restore trim system function when the original hose has cracked, hardened, or begun to leak with age. Power trim hoses are a wear item subject to constant flexing and exposure to hydraulic fluid, heat, and saltwater environments, so periodic replacement is a normal part of maintaining reliable trim and tilt operation. At 0.15 pounds, the hose is lightweight and straightforward to install using standard hand tools, making it a practical option for a routine trim system repair or a full trim hose set replacement. It is intended for MC-I drives within the serial number range 3780850-6225576.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2109
• Material: Rubber
• Color: White
• Hose Length: 32 inches
• Outside Diameter: 0.13 inches
• Fitting Size: 1/8 inch
• Weight: 0.15 pounds
• OEM Cross Reference: 32-59842

Fitment

• MC-I drives, serial numbers 3780850-6225576

Replaces (OEM)

• Mercury Marine 32-59842

Frequently Asked Questions

What does the Sierra 18-2109 power trim hose fit? This hose fits MC-I drives within the serial number range 3780850-6225576, and is used in the power trim hydraulic circuit connecting the trim pump to the trim cylinder.

Is the Sierra 18-2109 a direct replacement for a Mercury Marine part? Yes, the 18-2109 hose replaces Mercury Marine part number 32-59842 and is built to the same length and fitting specifications.

How long is the Sierra 18-2109 power trim hose? The hose measures 32 inches in length with a 0.13 inch outside diameter and a 1/8 inch fitting size.

What material is the 18-2109 trim hose made from? It is made from rubber construction with a white finish, suited to withstand hydraulic fluid and marine environment exposure.

How much does the Sierra 18-2109 power trim hose weigh? The Sierra 18-2109 power trim hose weighs 0.15 pounds.

Can I install this power trim hose myself? Installation involves disconnecting the old hose at its fittings and connecting the new Sierra 18-2109 in its place using standard hand tools; no specialized equipment is required for the hose swap itself.

Why would I need to replace a power trim hose like the 18-2109? Power trim hoses degrade over time from constant flexing, heat, and fluid exposure, leading to cracking, hardening, or leaks, which is when a replacement hose such as the 18-2109 is needed.

What is the fitting size on the Sierra 18-2109 hose? The fitting size on this hose is 1/8 inch.

Is the Sierra 18-2109 hose genuine Sierra or aftermarket? The 18-2109 is a Sierra branded part manufactured as a replacement for the original Mercury Marine 32-59842 hose.

Does the Sierra 18-2109 come as a single hose or a kit? The 18-2109 is sold as a single 32 inch power trim hose, not a multi-hose kit.

What color is the Sierra 18-2109 power trim hose? The hose has a white finish.