Marine Starter Motors & Alternators – Engine Part Numbers
A marine engine that won't crank doesn't always need a new starter. And if the batteries aren't charging, the alternator isn't automatically the problem.
A few quick checks can help identify the fault before ordering replacement parts.
Alfa Marine Spare Parts supplies marine starter motors, alternators and electrical engine parts for commercial vessels, yachts, workboats and marine generators.
Marine Starter Motors
Starter motors are available for many marine diesel engines, including:
Caterpillar: C18, C32, 3408, 3412, 3508, 3512, 3516
MTU: Series 2000, Series 4000
Cummins: 6BT, 6BTA, QSB, QSC, QSM11, KTA
Mitsubishi: S6R, S12R, S16R
Mitsubishi M009T85079 Starter Motor
Part Number: M009T85079
Brand: Mitsubishi
Part: Starter Motor
When replacing a starter motor, check the part number, voltage, mounting and engine application.
Marine Alternators
The alternator supplies electrical power while the engine is running and supports the vessel's battery charging system.
Mitsubishi A4TR6091AM Alternator
Part Number: A4TR6091AM
Brand: Mitsubishi
Part: Alternator
Check the voltage, output, mounting, pulley and electrical connections before ordering a replacement.
Engine Won't Start? Check This First
No crank:
Battery → Cables → Relay/Solenoid → Starter Motor
Slow crank:
Battery Voltage → Connections → Starter Motor
Starter spins but engine doesn't turn:
Starter Drive → Pinion → Ring Gear
Engine runs but batteries don't charge:
Belt → Wiring → Alternator → Regulator
This can help separate a starter or alternator problem from another fault in the electrical system.
Find Parts by Engine & Part Number
Specific searches make finding the correct part easier.
Examples:
Mitsubishi S6R M009T85079 Starter Motor
Mitsubishi A4TR6091AM Alternator
Caterpillar C32 Starter Motor
Caterpillar 3512 Starter Motor
MTU 16V2000 Starter Motor
MTU Series 4000 Alternator
Cummins QSM11 Starter Motor
Cummins QSM11 Alternator
If you have the existing part number, include it when requesting a quotation.
Buy Marine Starter Motors & Alternators Online
Alfa Marine Spare Parts supplies marine starter motors and alternators for Caterpillar, MTU, Cummins, Mitsubishi, DEUTZ, Yanmar, MAN, Volvo Penta, John Deere, Perkins and other marine diesel engines.
For pricing and availability, provide:
Engine Brand + Engine Model + Serial Number + Part Number + Quantity
FAQs
Can I order a marine starter motor by part number?
Yes. Send the existing part number together with the engine model and serial number to confirm the correct application.
Are 12V and 24V starter motors interchangeable?
No. The starter voltage and specification must match the engine and electrical system.
Do you supply marine starter motors and alternators worldwide?
Yes. Alfa Marine Spare Parts supplies marine engine parts worldwide, subject to availability and destination.
Request A Quote | Alfa Marine Spare Parts
Need a marine starter motor or alternator?
Send your engine model, part number and quantity to Alfa Marine Spare Parts for pricing and availability.