Sierra 18-2137 Power Trim Hose, Port Side, Replaces 32-99903, Fits Alpha One & Bravo I/II/III

The Sierra 18-2137 is a port-side power trim hose that connects to the bottom of the trim cylinder on MCM 120-260 and Bravo sterndrive setups. It is built for Trim Cylinder Casting #98703 and #98703-1, and is engineered to meet or exceed the original equipment part it replaces. The hose measures 14 inches in length with a metal tube portion approximately 11 1/4 inches long, and features a machined metal fitting for a secure, leak-resistant connection into the trim system's hydraulic circuit.

This hose is designated for the port side only -- it is not interchangeable with the starboard-side hose, which carries a different part number. It fits R, MR, Alpha One, and Bravo I, II, III, X, XR, and XZ drive units. Whether you are replacing a cracked, leaking, or corroded trim hose, the 18-2137 restores proper hydraulic fluid flow to the trim cylinder so the drive tilts and trims correctly.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2137
• Side: Port
• Hose Length: 14 inches
• Metal Tube Length: Approximately 11 1/4 inches
• Trim Cylinder Casting Number: 98703, 98703-1
• Weight: 0.12 pounds
• Finish: Machined
• UPC: 030999237217
• OEM Cross-Reference: 32-99903, 32-864588

Fitment

• MCM 120-260 & Bravo
• R, MR, Alpha One & Bravo I, II, III, X, XR & XZ

Replaces (OEM)

• 32-99903
• 32-864588

Frequently Asked Questions

Is the Sierra 18-2137 for the port or starboard side? The Sierra 18-2137 Power Trim Hose is a port-side hose only. It connects to the bottom of the trim cylinder and is not interchangeable with a starboard-side hose, which is a separate part number.

What does the Sierra 18-2137 replace? It replaces OEM numbers 32-99903 and 32-864588, and is built to match Trim Cylinder Casting #98703 and #98703-1.

What drive units does this trim hose fit? The 18-2137 fits R, MR, Alpha One, and Bravo I, II, III, X, XR, and XZ drives, and is designated for use on MCM 120-260 and Bravo applications.

How long is the Sierra 18-2137 hose? The hose itself measures 14 inches in length, with a metal tube portion of approximately 11 1/4 inches on the 18-2137 Power Trim Hose.

How much does this part weigh? The Sierra 18-2137 Power Trim Hose weighs 0.12 pounds.

Is the Sierra 18-2137 a genuine OEM part or an aftermarket replacement? It is an aftermarket replacement hose engineered to meet or exceed the performance of the original 32-99903 and 32-864588 equipment it replaces.

What is the fitting finish on this trim hose? The metal fitting on the 18-2137 has a machined finish for a precise, secure connection at the trim cylinder.

How is the 18-2137 different from the Sierra 18-2115 hose? The 18-2115 is built for Trim Cylinder Casting #14035-1 with OEM numbers 32-99903-1 and 32-864959, while the 18-2137 is built for Casting #98703/98703-1 with OEM numbers 32-99903 and 32-864588 -- they are not the same casting fitment and are not interchangeable.

What signs indicate my trim hose needs replacement? Cracking, leaking, or corrosion in the existing hose connecting to the bottom of the trim cylinder are common reasons to replace it with a part like the Sierra 18-2137.

What is included when I order the 18-2137? You receive one Sierra 18-2137 Power Trim Hose assembly, consisting of the hose and its metal tube fitting for the port-side trim cylinder connection.