Gasoline Marine Alternators - Heavy Duty & Performance Marine Alternators

94 Amp Single Wire Alternator
Your Price:
$169.99

Delco Style 94 Amp Single Wire Alternator

620-3147M

Delco Style 94 Amp 10SI Single Wire Alternator

New Delco style marine alternator. This model is satin finish. The 94 AMP has a single self-exciting one wire hook-up with a negative ground. Used in many applications including Mercruiser, Volvo and more. Replaces Mercruiser #47456A1 and #78403A2.


94 Amp Single Wire Chromed Marine Alternator
Your Price:
$269.99

Delco Style 94 Amp Single Wire Chromed Marine Alternator

620-3147M-NC

Delco Style 94 Amp 10SI Single Wire Chromed Marine Alternator

New Delco style chromed marine alternator. The 94 AMP has a single self-exciting one wire hook-up with a negative ground. Used in many applications including Mercruiser, Volvo and more. Replaces Mercruiser #47456A1 and #78403A2.


Delco Style 120 Amp Alternator
Your Price:
$289.99

Delco Style 120 Amp Alternator

620-7152MHD

If you're looking for the best alternator, then look no further as this is it! This all new delco style alternator whips out 120 amps at 12 Volts and requires a 3 wire hookup. USCG approved. Also available in Chrome.

  • 10-Si Style Alternator For Marine Gasoline Engines.
  • 2" Mounting Foot
  • Integral Regulator
  • Ignition Protected SAEJ1171
  • 3-Wire Hook-Up
  • Red Wire Is For Sensor
  • Black Wire Is For Excitation

Delco Style 120 Amp Chrome Alternator
Your Price:
$299.99

Delco Style 120 Amp Chrome Alternator

620-7152MHDC

If you're looking for the best alternator, then look no further as this is it! This all new delco style CHROME alternator whips out 120 amps at 12 Volts and requires only 3 wire hookup. USCG approved.

  • 10-Si Style Alternator For Marine Gasoline Engines.
  • 2" Mounting Foot
  • Integral Regulator
  • Ignition Protected SAEJ1171
  • 3-Wire Hook-Up
  • Red Wire Is For Sensor
  • Black Wire Is For Excitation

SAEJ1171 Alternator, Pleasurecraft, 12V, 70-AMP
Your Price:
$189.99

Delco Style Alternator, Serpentine, 12V, 70-AMP

620-3150

Delco Style Alternator, Serpentine, 12V, 70-AMP

  • NEW 12V, 70-AMP
  • Fits Pleasurecraft
  • 2" Mounting Foot
  • Includes 50mm Serpentine Pulley

Mando, 12 Volt, 55 Amp Alternator, Internal Regulator
Your Price:
$179.99

Mando, 12 Volt, 55 Amp Alternator, Internal Regulator

620-3186M

Small Frame New Mando Alternator - 12 Volt, 55Amp for Mercruiser, VolvoPenta, Universal Atomic 4 as well as others. Internal Regulator, Negative Ground, Complete With Screens. USCG Approved and features non-corrosive elements.

  • 55 Amp Replaces
    Motorola nos.78403A2, 8MR2023F & 8MR2024F
    Mando # AC 155603
    Mercruiser #'s 12449, 817119A1, 817119A4 & 92497A3
    OMC #'s 3854182, 3853853, 3854809, 987774, 985465, 986008 & 988247
    Volvo #'s 3854809-5, 3854182-7, 3853853-4 & 3850927-9
    GM nos.78477 & 9793
    Crusader 39200
    Marine Power 1210-000
  • Red Wire is for Sensor
  • Purple Wire is for Excitation
  • Replacement Voltage Regulator # VR54

Mando 65 Amp Marine Alternator
Your Price:
$179.99

Mando 65 Amp Marine Alternator, Mercury Replacement

620-3159M

Mando 65 Amp Marine Alternator

The Mando style marine alternator is Coast Guard approved and replaces your Delco type (reference no. 3856600). These feature non-corrosive elements for longer lasting life. 12 Volt, 65 Amp for Mercruiser, VolvoPenta, Universal Atomic 4 as well as others.
  • Replaces: Mercruiser # 805884T & 805447T
  • Replaces Sierra 18-5965 and Arco 60065
  • Red Wire is for Sensor
  • Purple Wire is for Excitation
  • Replacement Voltage Regulator # VR54
  • V-Groove Pulley

Mando Style Alternator - 12 Volt, 65 Amp, Single Pulley
Your Price:
$189.99

Mando Style Alternator - 12 Volt, 65 Amp, Single Pulley

620-3149M

Mando Style Alternator - 12 Volt, 65 Amp, Single Pulley

This marine alternator is Coast Guard approved and replaces your Delco type (reference No.3856600). These feature non-corrosive elements for longer lasting life. Internal fan. Single V-Groove Pulley. Replaces Pleasurecraft RA097007B, Delco 19020608, Sierra# 18-6288, Arco# 20825 . Internally regulated.

**This alternator requires a plug item #620-3149MW**


Prestolite 90 Amp Marine Alternator
Your Price:
$329.99

Prestolite 120 Amp Marine Alternator

620-3148

Prestolite 120 Amp Marine Alternator with Tach Terminal

This USCG approved Prestolite marine alternator is 100% new, not rebuilt, and features the latest in non-corrosive elements. 10Si Style Alternator. 1" Mounting Foot, .5" Diameter, Bolt Hole W/ 3-Hole Adjustment Ear, Ignition Projected SAE J1171, 3-Wire Hook Up, Red Wire Is For Sensor, Black Wire Is For Excitation, Internally Regulated And Rectified. OE# 78403A2 Hi-Output replacement for older Mercruiser 1983-89 55Amp Motorola Alternators.


Small Frame Alternator, 50 Amp
Your Price:
$275.99

Mercruiser 500EFI, 575SCI Replacement Small Frame Alternator, 50 Amp

620-3145

500EFI, 575SCI Replacement Small Frame Alternator, 50 Amp

  • Replaces Mercruiser 500EFI and 575SCI alternators as well as Mercury 2.5L EFI Race Outboard alternator.
  • Replaces Mercruiser #'s 834832T, 857006A3, 857006T
  • Ignition Protected SAEJ1171
  • Includes multi-groove Serpentine Pulley

Alternator, 100 Amp 7SI w/o Pulley
Your Price:
$379.99

Denso Style Alternator, 100 Amp 7SI without Pulley

620-3146

Alternator, 100 Amp 7SI without Pulley

This alternator is used in many Hardin Marine Accessory Drive Kits including 625-8251, 625-8253, 625-8287, 625-8289, 625-8336.


PLUG/HARNESS FOR 3149M ALTERNATOR
Your Price:
$19.99

PLUG/HARNESS FOR 3149M ALTERNATOR

620-3149MW

PLUG/HARNESS FOR 3149M ALTERNATOR

This is a 2 wire harness and plug for the 620-3149M alternator.