Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519
Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519
Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519
Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519
Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519

Alternator for Caterpillar 416F, 416F2, 416FST, 420F, 420F2 400-12519

Item #: 400-12519

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  • Product Info
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Overview

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Item Number: 400-12519

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
DescriptionAlternator
Volt12
Amps150
Regulator Clock10:00
Rotation DirectionClockwise
Mount Hole 2 TypeUnthreaded
Mount Hole ID 310.500mm
Mount Hole 3 TypeUnthreaded
Mount Hole ID 412.500mm
Mount Hole 4 TypeUnthreaded
Mounting Ear Thickness3.150"/80mm
Mounting Ear 2 Thickness3.150"/80mm
Mounting Ear 3 Thickness3.150"/80mm
Mounting Ear 4 Thickness3.150"/80mm

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
Caterpillar 416F
Caterpillar 416F2
Caterpillar 416F2ST
Caterpillar 416FST
Caterpillar 420F
Caterpillar 420F2
Caterpillar 420F2IT
Caterpillar 420F2ST
Caterpillar 420FIT
Caterpillar 420FST
Caterpillar 428F
Caterpillar 428F2
Caterpillar 430F
Caterpillar 430F2
Caterpillar 430F2IT
Caterpillar 430F2ST
Caterpillar 430FIT
Caterpillar 430FST
Caterpillar 432F
Caterpillar 432F2
Caterpillar 434F
Caterpillar 434F2
Caterpillar 440
Caterpillar 444F
Caterpillar 444F2
Caterpillar 450F
Caterpillar 910M
Caterpillar 914M
Caterpillar 918M
Caterpillar C4.4
Caterpillar C7
Caterpillar C7.1
Caterpillar CB10
Caterpillar CB13
Caterpillar CB15
Caterpillar CB64B
Caterpillar CB66B
Caterpillar CB68B
Caterpillar CB68BLRC
Caterpillar CB7
Caterpillar CB8
Caterpillar CP44B
Caterpillar CP44BLRC
Caterpillar CS44B
Caterpillar CS44BLRC Cat C4.
Caterpillar TH3510D
Caterpillar TH408D
Caterpillar TL1055D Cat C4.
Caterpillar TL1255D Cat C4.

Replaces These Part Numbers

Caterpillar20R-3601, 321-8927
Delco8600377
Lester21210

Frequently Asked Questions

Q: Do I need a larger charge wire for a High Output unit?
A: The high amp unit will operate better than stock, but not to its full potential without a larger charge wire. It’s the same reason firetrucks do not use garden hoses. It is IMPARATIVE to have proper charge and ground cables.

Q: Does a High Amp unit cause any damage to my battery or my vehicles charging system?
A: As long as it is installed properly with battery in good condition, then no. A High Output unit works exactly like a factory unit and only produces what is being demanded. No alternator works continuously at full output. Higher amperage is not bad and will not hurt a battery, but high voltage will blow one up.

Q: Will aftermarket underdrive pulleys (crankshaft power pulley) have any effect on my alternator?
A: Yes, underdrive crankshaft pulleys slow all the components (power steering, a/c, and alternator) to provide more power to the rear wheels. In some cases, the charging systems will fall totally on the battery at idle and completely stop charging.

Q: Where is the best place to get a voltage reading of the alternator output?
A: You’ll get the most accurate voltage reading from the back of the alternator at the main charge post that runs directly to the battery. This must be done while the vehicle is running.

Q: Why is the pulley on a high amp alternator smaller than my stock pulley?
A: The smaller pulley advances the power curve of the alternator just slightly, which produces a little more amperage around the idle if needed.

Q: Will I need a smaller belt for my high amp unit?
A: This varies by application because not all belts and belt tensioners are in the same condition. The tensioner will always tell you if you need a new belt or not. If it’s in range, you will not. If it is out, you will. Generally, you will need a belt that is one inch shorter than stock. You should have no problem finding a replacement wherever you buy your parts. V belt applications simply re-adjust your belt tensions to 3/8” deflection.

Q: What is the difference between a one wire, self-exciting and a self-energizing regulator?
A: Nothing. They are all exactly the same. Different manufacturers use different terms for marketing. The only wire to hook up is the charge wire to the battery. This does require modification for the alternator charge light on the dash.

Q: My stock unit used a five-groove pulley, and you sent my high amp alternator with a 6 groove. Why and what can I do?
A: 5 groove overdrive pullies are not produced. Install the belt on the back groove of the pulley closest to the fan or body of the alternator. The fan is internal, and this application will work just fine.

Q: Can your alternator be run in dual or triple alternator applications?
A: Yes. When wired and mounted correctly, the alternator can run in either dual or triple applications.

Q: Will I need a new battery with a high amp alternator?
A: If your battery is in good condition, and in spec of its OEM rating, then no. Your battery should work equally well with either the OEM and a High Amp unit.

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