The B53 ST-0011 is a 12-volt aftermarket starter motor designed for selected Mercury and Mariner 2-stroke outboard engines from 6HP to 25HP. Featuring a 10-tooth drive gear and counterclockwise rotation, it provides reliable engine cranking and replaces several original starter assemblies. Ideal for restoring electric starting performance, this replacement unit is suitable for compatible outboards manufactured during the specified production years.
Mercury & Mariner Starter Motors
Starter Motor for Mercury Mariner 9.9-25HP 1989-2002
SKU: MXST-0011
$335.00
Key benefits
Key Benefits
- - 12V electric starter motor for compatible outboard engines
- - 10-tooth drive gear for correct starter engagement
- - Counterclockwise (CCW) rotation
- - Aftermarket replacement for selected original starter motors
- - Suitable for servicing, repairs and engine restoration
- - Covers a range of older 2-stroke outboard applications
Specifications & Dimensions
- - Model: B53
- - Part Number: ST-0011
- - Product Type: Electric Starter Motor
- - Voltage: 12V DC
- - Drive Gear: 10 teeth
- - Rotation: Counterclockwise (CCW)
- - Engine Type: Selected 2-stroke outboards
- - Mounting Configuration: Match original starter assembly
Compatible Outboard Motors
- Mercury Outboards
- 1986–1996 applications
- - Mercury 6HP
- - Mercury 8HP
- - Mercury 9.9HP
- - Mercury 15HP
- 1980–1987 applications
- - Mercury 18HP
- - Mercury 20HP
- - Mercury 25HP
Selected 1980–2001 applications, subject to engine serial number and original starter configuration
- - Mariner 9.9HP
- - Mariner 15HP
- - Mariner 18HP
- - Mariner 20HP
- - Mariner 25HP
- Important: The above ranges are based on the supplied application information and should not be interpreted as confirmation that every engine within those years uses this starter. Match the OEM part number and engine serial number before ordering.
Cross-Reference / Replacement Part Numbers
- Mercury / Mariner OEM
- - 50-893889T
- - 50-8M0033984
- - 50-90983A
- - 50-90983A1
- - 50-90983T1
Signs the Starter Motor Needs Replacing
- - Engine fails to crank despite a charged battery
- - Clicking noise when the starter is engaged
- - Slow or intermittent engine cranking
- - Grinding or abnormal noises during starting
- - Excessive starter motor heat
- - Corrosion or damage to the starter assembly
Important Fitment Information
- Before ordering, confirm that your existing starter has a 12V electrical rating, 10-tooth drive gear, CCW rotation and matching mounting arrangement. Starter configurations can vary between engine years, serial number ranges and electric-start conversions.
Shipping
Ships Australia-wide