eBay

Power Source Parts

Marine Alternator

12174N-1G | 12V | 55 Amp | SAE J1171 Marine Certified | Single V-Belt

Direct replacement Mando-style marine alternator for select MerCruiser, Volvo Penta, OMC, Crusader, PCM, Indmar & Chrysler Marine applications

LIFETIME

Warranty

SAME DAY

Shipping Until 1PM ET

30 DAY

Free Returns

MARINE

Ignition Protected

Product Overview

This listing is for a brand new marine alternator, part number 12174N-1G. This is a 12 volt, 55 amp, Mando-style marine alternator with an internal regulator, external fan, bi-directional rotation, and single V-belt pulley. Commonly used on select MerCruiser, Volvo Penta, OMC, Crusader, Pleasurecraft Marine / PCM, Indmar, Chrysler Marine, and related marine engine applications.

Alternator Specifications

Part Number	12174N-1G
Condition	Brand New
Product Type	Marine Alternator
Certification	SAE J1171 Marine Certified / Ignition Protected
Voltage	12 Volt
Amperage	55 Amp
Design	Internal Regulator / External Fan
Rotation	Bi-Directional
Pulley	Single V-Belt Pulley
Alternator Family	Mando Marine Style

Important Fitment Notice

Please verify your original alternator part number, amperage, plug style, pulley type, mounting style, and engine application before ordering. Marine applications may vary by engine serial number, year, drive package, and original equipment configuration.

Detailed Marine Applications & Fitment

Important Fitment Notice: Please verify original alternator number, amperage, mounting style, pulley configuration, tach hookup, and engine application before ordering. Marine applications may vary by production date, engine serial number, and charging system configuration.

General Marine Applications

Manufacturer	Years	Application Details
Chrysler Marine	1985-On	Motorola System, w/Tach Hookup
Crusader	Various	Various Engines, Mando 55A Alternator
Glenwood	1989-On	Motorola Charging System
Hardin Marine	1985-On	1-Hole Mount, Tach Hookup
Indmar	1985-On	1-Hole Mount, Tach Hookup
Jacuzzi Jet	1985-On	1-Hole Mount, Tach Hookup
Lehman Diesel	1973-On	4D254 / 6D363TC Diesel Applications
Lucas Marine	1985-On	Various Marine Engines
Mando Marine	1985-On	Various Marine Engines
Medalist	1989-On	1-Hole Mount, Tach Hookup, Radio Suppression
OMC Inboard & V-Drive	1985-1996	Mando 51A / 55A Applications
Pleasurecraft Marine (PCM)	1985-On	Mando & Motorola Systems
Panther	1989-On	Motorola Charging System
Rex Marine	1985-On	1-Hole Mount, Tach Hookup
Stewart & Stevenson Marine	1988-On	2nd Production, Tach Hookup
Tennant	1992-1998	Industrial / Marine Applications

MerCruiser Applications

Model	Years	Engine	Alternator System
Model 120	1983-1989	GM 2.5L / 153ci 4-Cyl	Mando 55A
Model 140	1983-1986	GM 3.0L / 181ci 4-Cyl	Mando 55A
Model 175	1987-1992	GM 4.3L / 262ci V6	Mando 55A
Model 185	1983-1987	GM 3.8L / 229ci V6 or GM 4.3L / 262ci V6	Mando 55A / Motorola 51A
Model 2.5L	1987-1989	GM 2.5L / 153ci 4-Cyl	Mando 55A
Model 200	1985-1987	GM 5.0L / 305ci V8	Mando 51A / 55A / Motorola 51A
Model 205	1985-1991	GM 4.3L / 262ci V6	Mando 55A / Motorola 51A
Model 228	1982-1984	GM 5.0L / 305ci V8	Mando 55A / Motorola 51A
Model 230	1985-1987	GM 5.0L / 305ci V8	Mando 51A / 55A / Motorola 51A
Model 230 MIE	1981-1995	GM 5.0L / 305ci V8	Mando 55A / Motorola 51A
Model 260 / 260 MIE	1981-1987	GM 5.7L / 350ci V8	Mando 51A / 55A / Motorola 51A
Model 3.0	1987-1995	GM 3.0L / 181ci 4-Cyl	Mando 51A / 55A / Motorola 51A
Model 330	1982-1987	GM 7.4L / 454ci V8	Mando 55A / Motorola 51A
350 Mag Alpha	1986-1996	GM 5.7L / 350ci V8	Mando 51A / 55A / Motorola 51A
350 Mag Ski	1991-1996	GM 5.7L / 350ci V8	Mando 51A / 55A
4.3L / 4.3LX / Gen II	1988-1996	GM 4.3L / 262ci V6	Mando 55A
420 / 425	1987-1993	GM 7.4L / 454ci V8	Mando 51A / 55A
454 Mag Alpha	1986-1988	GM 7.4L / 454ci V8	Mando 55A
454 Mag Bravo	1988-1997	GM 7.4L / 454ci V8	Mando 51A / 55A
465 / 500 / 502 Mag Bravo	1990-2000	GM 8.2L / 502ci V8	Mando 51A / 55A
525SC / 600SC	1991-1998	GM 7.4L / 8.2L Supercharged V8	Mando 51A / 55A
7.4L Bravo / 7.4L MIE	1988-1997	GM 7.4L / 454ci V8	Mando 51A / 55A / Motorola 51A
8.2L MIE	1990-1996	GM 8.2L / 502ci V8	Mando 51A / 55A / Motorola 51A

Common GM engine families include: 2.5L 153ci • 3.0L 181ci • 4.3L 262ci • 5.0L 305ci • 5.7L 350ci • 7.4L 454ci • 8.2L 502ci • 8.9L 540ci

Volvo Penta Applications

Model	Years	Engine
3.0GL / 3.0GS	1993-1999	3.0L 181ci 4-Cyl Gas
4.3GL / 4.3GS / 4.3Gi	1993-1999	4.3L 262ci V6 Gas
5.0FL / 5.0Fi	1993-1999	5.0L 302ci Ford
5.7GL / GS / Gi / GSi	1993-1999	5.7L 350ci Gas
5.8Fi / 5.8L	1993-1996	5.8L 351ci Ford
7.4GL	1994-1999	7.4L 454ci Gas
8.2GL	1994-1999	8.2L 502ci Gas

Quick Fitment Summary

Fits many select MerCruiser GM-based marine stern drive and inboard engines
Fits select Volvo Penta GM-based marine engines
Fits select OMC Cobra, OMC Inboard / V-Drive, Crusader, PCM / Pleasurecraft, Indmar, and Chrysler Marine applications
Common engine families include 2.5L, 3.0L, 3.8L, 4.3L, 5.0L, 5.7L, 7.4L, 8.1L, and 8.2L marine engines
Designed for applications using a 12V 55A Mando-style marine alternator with single V-belt pulley and tach hookup

Common MerCruiser Applications

Common MerCruiser applications include select 120, 140, 175, 185, 200, 205, 228, 230, 230 MIE, 260, 260 MIE, 3.0, 3.0LX, 330, 350 Mag, 350 Mag Alpha, 350 Mag Ski, 4.3L, 4.3LX, 454 Mag, 5.0L, 5.0LX, 5.7L, 5.7L Bravo, 5.7L MIE, 5.7L Ski, 7.4L Bravo, 7.4L MIE, 8.2L MIE, 502 Mag Bravo and related Alpha, Bravo, TRS, MIE, Ski, Mag, EFI, MPI and Gen V / Gen VI marine engine packages.

Coverage commonly includes many applications from the 1980s through the late 1990s depending on engine model and original alternator configuration.

Other Common Marine Applications

Manufacturer	Common Applications	Notes
Volvo Penta	3.0GL, 3.0GS, 4.3GL, 4.3GS, 4.3Gi, 5.0Fi, 5.7GL, 5.7GS, 5.7Gi, 5.7GSi, 7.4GL, 8.2GL	Verify original alternator number and pulley configuration
OMC	Cobra, Inboard, V-Drive, 3.0L, 4.3L, 5.7L, 5.8L, 7.4L applications	Select Mando 51A / 55A systems
Crusader / PCM	Various GM-based marine engines	Often used on Mando 55A alternator applications
Indmar / Chrysler Marine	Select marine engine applications using Mando / Motorola style alternators	Verify tach hookup and mounting style

Interchange & Replacement Numbers

Replaces or cross-references with the following part numbers:

Lester: 12174, 12174N, 12176

Mando: A000B0331, AC155603, AC155604, AR150AA, AR150AR, AR150BA

Mercury Marine: 12449, 19685, 817119, 817119A1, 817119A4, 98555

Volvo Penta: 3854809

OMC: 1210-000, 3853853, 3854809

Sierra Marine: 18-5965, 18-5966

J&N: 400-12174

WAI: 12174N, 12176N

Power Source Parts Lifetime Warranty

This alternator is backed by our Power Source Parts Lifetime Warranty against manufacturer defects.

Warranty covers replacement of the part due to manufacturer defect.
Warranty does not cover misuse, improper installation, water intrusion, abuse, alteration, or damage from incorrect application.
Buyer is responsible for verifying correct fitment before installation.
Please contact us through eBay messages if you need help confirming fitment.

Shipping & Returns

Same Day Shipping

Orders placed and paid before 1:00 PM Eastern Time ship the same business day whenever possible. Orders placed after the cutoff, on weekends, or on holidays will ship the next business day.

30 Day Free Returns

We offer 30 day free returns on eligible items. The item must be returned in the same condition received. Installed, damaged, altered, used, modified, or incorrectly installed items may not qualify for a full refund.

Need Help Confirming Fitment?

Send us your original alternator part number, engine model, year, plug style, pulley type, mounting style, and any label numbers through eBay messages before ordering.

Compatibility information is provided as a guide only. Buyer must verify part number, specifications, mounting style, amperage, pulley type, plug style, and application before purchase. Brand names and part numbers are used for identification and interchange reference only.