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Mercury & Mariner Starter Motors

Starter Motor for Mercruiser / Volvo Penta V6-V8

SKU: MXST-A-BL

$295.00
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The ST-A-BL is a 12-volt marine-grade replacement starter motor designed for selected petrol inboard and sterndrive engines. Featuring an 11-tooth drive gear, clockwise rotation and a 1.4kW permanent magnet gear reduction design, it provides dependable engine cranking. Its marine-grade construction helps reduce ignition risks in enclosed engine compartments, while the black corrosion-resistant finish offers additional protection against harsh marine operating conditions.

Key benefits

Key Benefits

  • - Marine-grade starter motor designed for petrol engine compartments
  • - 12V electrical operation with 1.4kW power output
  • - 11-tooth drive gear
  • - Clockwise (CW) rotation
  • - Permanent Magnet Gear Reduction (PMGR) construction
  • - Black corrosion-resistant painted finish
  • - Marine ignition-protected design intended to reduce spark ignition risks
  • - Two-bolt staggered mounting configuration
  • - Suitable for selected 4-cylinder, V6 and V8 petrol marine engines

Specifications & Dimensions

  • - Part Number: ST-A-BL
  • - Additional Reference: A-BL
  • - Product Type: Marine Electric Starter Motor
  • - Voltage: 12V DC
  • - Power Rating: 1.4kW
  • - Drive Gear Teeth: 11
  • - Rotation Direction: Clockwise (CW)
  • - Starter Design: Permanent Magnet Gear Reduction (PMGR)
  • - Mounting Configuration: 2-bolt staggered / offset pattern
  • - Finish: Black corrosion-resistant painted coating
  • - Engine Type: Petrol inboard and sterndrive
  • - Engine Configuration: 4-cylinder, V6 and V8
  • - Engine Displacement: 3.0L–8.2L, selected applications

Compatible Marine Engines

  • MerCruiser Petrol Inboard & Sterndrive Engines
  • Selected 1998–2012 models
  • - MerCruiser 3.0L – 4-cylinder
  • - MerCruiser 4.3L – V6
  • - MerCruiser 5.0L – V8
  • - MerCruiser 5.7L – V8
  • - MerCruiser 6.2L – V8
  • Compatibility is limited to engines using the specified 11-tooth, clockwise starter with staggered two-bolt mounting.

Volvo Penta Petrol Inboard & Sterndrive Engines

  • Selected models from 2000 onwards
  • - Volvo Penta 3.0L – 4-cylinder
  • - Volvo Penta 4.3L – V6
  • - Volvo Penta 5.0L – V8
  • - Volvo Penta 5.7L – V8
  • - Volvo Penta 7.4L – V8
  • - Volvo Penta 8.1L – V8
  • - Volvo Penta 8.2L – V8
  • These are the supplied displacement applications, not confirmation of every engine variant. The broader 1998–2012 description and the separate 2000-onwards reference should be checked against the engine's original starter number.

Cross-Reference / Replacement Part Numbers

  • Mercury / MerCruiser OEM
  • - 50-807904A1
  • - 50-863007A1
  • - 863007A1
  • Volvo Penta OEM
  • - 3660566-3
  • - 3857747
  • - 3860566
  • - 3860566-3
  • - 3885317

Signs the Starter Motor Needs Replacing

  • - Engine fails to crank despite a fully charged battery
  • - Clicking noise when turning the ignition key
  • - Slow or intermittent engine cranking
  • - Grinding or unusual noises during starting
  • - Excessive starter motor heat
  • - Corrosion or damage to the starter housing
  • - Worn or damaged starter drive gear

Important Fitment Information

  • - Confirm 12V electrical operation and 1.4kW power rating.
  • - Verify the 11-tooth drive gear and clockwise rotation.
  • - Ensure the original starter uses a two-bolt staggered mounting pattern.
  • - Compare the original starter with the listed OEM replacement numbers.
  • - Check engine model, displacement, production year and serial number.
  • - Confirm the replacement is appropriately marine ignition-protected for installation in a petrol engine compartment.
  • - Do not substitute an automotive starter motor for a marine ignition-protected starter.

Shipping

Ships Australia-wide