Description
Sierra 18-5611 Mercury 9.9–25HP Outboard Starter
The Sierra 18-5611 Outboard Starter is a marine replacement starter designed for select Mercury and Mariner 9.9–25 HP outboard engines. It features a 10-tooth drive gear, 12-volt operation, and clockwise rotation.
Product Details
- Brand: Sierra
- Part Number: 18-5611
- Application: Mercury / Mariner outboards
- Horsepower: 9.9–25 HP
- Voltage: 12 VDC
- Drive Gear: 10 teeth
- Rotation: Clockwise
- Mounting: 2-bolt bracket
- Housing: Aluminum
- Solenoid: Not attached
- UPC: 747730043982
OEM & Interchange Numbers
The Sierra 18-5611 is listed as replacing or interchanging with:
- Mercury: 50-90983A1
- Mercury: 50-90983T1
- Mercury: 50-8M0033984
- Mercury: 50-893889T
- Mallory: 9-15022
- ARCO: 5367
- MES: S2043M
Sierra fitment references also identify applications across several Mercury horsepower ranges, including 6–15 HP, 18–25 HP, with model-year and serial-number ranges varying by engine.
Specifications
- California Residents:
- WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
