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Alternator Hardin Marine Motorola Universal Atomic 4 New Holland L445 12V 37A

Alternator Hardin Marine Motorola Universal Atomic 4 New Holland L445 12V 37A

SKU:400-16128

Regular price £262.49 GBP
Regular price £314.99 GBP Sale price £262.49 GBP
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Marine & Industrial Alternator

Fits Hardin Marine, Atomic 4 & New Holland (37 Amp)

Ensure reliable power on the water or the job site with this high-quality **Marine Grade Alternator**. Designed to replace the classic **Motorola-style** alternators, this unit is a perfect fit for **Hardin Marine**, **Jacuzzi Jet**, **Universal Atomic 4**, and **Westerbeke** marine engines, as well as **New Holland L445** skid steer loaders.

This **Ignition Protected** alternator is safe for use in gas engine compartments, preventing spark hazards. It features a **37 Amp** output and a **Bi-Directional fan**, allowing it to cool effectively regardless of engine rotation.

IGNITION PROTECTED: Certified for safe operation in marine gasoline engine compartments (SAE J1171 compliant).

Key Features

  • Marine Grade: Ignition protected design.
  • Direct Replacement: Fits 1-foot and 2-foot mounts.
  • Bi-Directional: Cools in CW or CCW rotation.
  • Includes Pulley: Single V-Groove installed.

Technical Specs

Voltage: 12 Volts
Amperage: 37 Amps
Rotation: Bi-Directional
Regulator: Internal (IR)
Mounting: 1" or 2" Spool (Adjustable)
SKU Reference: 400-16128

Vehicle Fitment Guide

Make Model / Application Years
Hardin Marine Jet Boat Engines Various
Universal Atomic 4 (Marine Engine) Various
New Holland L445 Skid Steer 1975 - 1983
Westerbeke Marine Generators Various
Motorola Marine Alternator Replacements MR Series

OEM Part Number Cross Reference

Motorola 8MR2039K, 8MR2023F, 8MR2039, 8MR2024F
Prestolite 110-255, 110-258, 110-555
Arco Marine 20102
New Holland 489807

Frequently Asked Questions

Is this alternator ignition protected?

Yes, this unit is SAE J1171 Ignition Protected, making it safe for use in marine engine compartments where gasoline fumes may be present.

Will it fit my Atomic 4 engine?

Yes, this Motorola-style alternator is a very common replacement for the Universal Atomic 4 marine engine. It typically mounts using a 1-inch or 2-inch spool foot (spacers are often included or adjustable).

Does it need an external regulator?

No, this alternator has a built-in **Internal Regulator**, simplifying the wiring. It usually requires just a battery wire and an ignition/excite wire.

Note: Please check your mounting bracket width (1 inch or 2 inch) before ordering.
Fast shipping available across the UK and Europe.

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Shipping calculated at checkout. Free shipping over £150. Terms apply