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What amp alternator is on a 5.9 Cummins?

The 5.9-liter Cummins diesel engine, commonly found in Dodge Ram trucks, utilizes a specific alternator to power the vehicle's electrical system. This alternator is responsible for charging the battery and providing the necessary electricity to run the various electrical components in the truck.


What Alternator is Used in a 5.9 Cummins Engine?


The alternator used in a 5.9 Cummins engine is typically a 130-amp or 160-amp model. The specific alternator installed can vary depending on the year, model, and configuration of the Dodge Ram truck. The most common alternator found in a 5.9 Cummins engine is a 130-amp unit.


Key Features of the 5.9 Cummins Alternator


The alternator in a 5.9 Cummins engine has several important features:



  • High output capacity to meet the electrical demands of the vehicle

  • Durable construction to withstand the harsh operating conditions of a diesel engine

  • Efficient charging to maintain the battery's state of charge

  • Compatibility with the engine's electrical system and wiring harness


These features ensure the alternator can reliably power the truck's electrical components, from the lights and accessories to the engine control modules and other electronic systems.


Replacing the 5.9 Cummins Alternator


If the alternator in a 5.9 Cummins engine needs to be replaced, it's important to use a high-quality replacement part that meets or exceeds the original specifications. Aftermarket alternators are available, but it's crucial to ensure they are compatible with the engine and electrical system. Proper installation and wiring are also essential to ensure the new alternator functions correctly and doesn't cause any issues.

How many amps is a factory alternator?


An OEM alternator should put out about 65 amperes for most cars. More powerful alternators are available up to about 300 amperes.



How many amps is f250 alternator?


2009-2010 Ford F-250 Super Duty 5.4L 250-320-370-400amp High Output Alternator | JS Alternators.



Can I put a higher amperage alternator in my truck?


The voltage will stay the same and you won't damage your system by having a more powerful alternator. If you decide to upgrade your alternator, you'll need to ensure that all the cables have enough thickness to handle the increase in current.



What is the output voltage of a 24V truck alternator?


A stable battery voltage (Channel A) around 28.3 V, with no spikes or significant ripples. An AC current waveform (Channel B) with uniform peaks and troughs having a DC average around 27 A.



Is 250 amp alternator enough?


Most stock alternators are in the 80-120 ampere range and can only supply about 40% to 50% of that for non-automotive uses like amplifiers. A 250 or 300 ampere aftermarket high output alternator should provide enough power for all your car's systems and your high-powered stereo too.



How many amps is a 24V alternator?


Alternators available for 24volt systems typically tap out at 500 to 600 amps. There is nothing currently used in the market that has higher output than this.



What is the difference between 12V and 24V alternator?


12V systems require massive wires when pulling large loads because the current (amps) are higher. As we have already learned, 24V systems reduce the current or amps two times, then a downside of a 12V system is the amperage is double that of a 24V system at the same power.



How many amps does a diesel truck alternator put out?


Duramax engines (even the older ones), for instance, have 105- and 130-amp alternators, which is fine for just about any electrical draw you'll encounter.



How can I tell what amp my alternator is?


It's important to understand how much power an alternator can provide so that it doesn't become overloaded. And cause damage to other components in your vehicle.



How many cranking amps to start a diesel engine?


For diesel engines, you need: 250 to 400 amps for a 4 cylinder. 400 to 500 amps for a 6 cylinder. 500 to 700 amps for an 8 cylinder.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.