Fits MI 120, MI 120, MS 120, MS 120 & More (50 Amp)
Keep your Cummins Mercruiser running with this 50 Amp 12V replacement alternator. Designed as a direct-fit replacement for the engine - marine inboard, marine listed below, it delivers reliable charging for standard and accessory electrical loads.
This unit features an internal fan (IF) and an internal regulator (IR), and is supplied with a S6 pulley already fitted.
DIRECT FIT: Replaces Arrowhead AMT0204 — no modification required on the machines listed below.
Key Features
✔High Capacity: 50 Amps of charging output.
✔Direct Replacement: Replaces Arrowhead AMT0204.
✔Pulley Fitted: S6 pulley installed and ready to fit.
✔Robust Design: IF fan. IR regulator.
✔Quality Assured: New aftermarket unit, 12 month warranty.
Technical Specs
Voltage:
12 Volts
Amperage:
50 Amps
Rotation:
CW (Clockwise)
Pulley:
S6
Regulator:
Internal (IR)
Fan Type:
Internal (IF)
Clock:
11
SKU Reference:
400-48061
Vehicle Fitment Guide
Make
Equipment Type
Models
Years
Cummins Mercruiser
Engine - Marine Inboard
MI 120
2004–2005
Cummins Mercruiser
Marine
MI 120, MS 120
2004–2005
Cummins Mercruiser
Marine Stern Drive
MS 120
2004–2005
Mercruiser
Engine
Model D1.7L DTI (Alpha)
2001
OEM Part Number Cross Reference
Arrowhead
AMT0204, A7TA2991
EMP Parts
4-6948
Isuzu
8972477180
J&N Electrical Products
400-48061
Lester
12630
Mercury Marine
882571, 8M0084523
Mitsubishi
A7TA2991
WAI
12630N
Frequently Asked Questions
Will this fit my Cummins Mercruiser MI 120?
Yes — the MI 120 appears in the fitment guide above. Check your existing part number against the cross reference table to confirm.
Is this a 50 Amp alternator?
Yes, this is a 50 Amp 12V unit with an IR regulator.
Is the pulley included?
Yes, a S6 pulley is pre-installed.
Is this new or remanufactured?
This is a brand new aftermarket unit — not a remanufactured core.
Note: Please verify your machine's serial number or existing part number to ensure compatibility. Fast shipping available across the UK and Europe.
