How do I tell what kind of alternator I have?

Look for the number on the alternator. If you can’t see the entire number, remove the adjustable bracket with a wrench. Take off the alternator and find the part number on it. Once you have the number, you have the identification of your alternator.

What is the difference between 10SI and 12SI alternator?

Out back, a 12SI has much larger cooling vents than a 10SI, and a 10SI has more cooling vents than an older DN-series alternator. Besides having a higher amp output, SI-series alternators also begin charging at much lower engine rpm (which is beneficial when cruising, for example) than older-style alternators.

Where is the part number on a alternator?

Where to find the part number depends on the make and model of the Alternator. On most if not all Alernators the part number and Amps are found on a label on the side or end of the Alernator.

How many amps does my alternator put out?

Most late model alternators produce 120 to 155 amps or more. Current output increases with engine speed, from around 20 to 50 amps at idle up to the unit’s maximum output at 2,500 RPM or higher (refer to a service manual for the exact charging output specifications for your vehicle).

How many amps does my alternator need?

The amp rating of the alternator is matched to the vehicle’s electrical system. Older vehicles with fewer accessories may only need a 70- or 80-amp alternator, while a newer vehicle with lots of electronics and accessories may need a 120- to 160-amp alternator.

How do you test how many amps your alternator is putting out?

Turn on all the electrical equipment in the car: lights, stereo, wipers and everything else you can. Let the engine idle at around 1200 rpm. Check your car’s manual or parts manual to see what your alternator’s maximum amperage should be. The amp reading on your meter should be near the maximum output.

What is the difference between the alternator and Universal alternator?

Universal Application Unlike an OEM specific alternator, a universal alternator works on a variety of vehicle engines. The universal alternators are designed to meet or exceed the recommended engine specifications. A core charge is taken anytime you purchase an alternator from AutoZone.

How many amps should a 12 volt alternator put out?

The size of an alternator will most likely increase the set amperage, too. High output alternators (often found on larger vehicles) can use between 200 to 350 amps. Smaller cars by comparison, such as a Ford Mustang, will only use about 100 amps with batteries that run at about 12 volts.

What is the 140 amp alternator code on a GM Truck?

the code for 140 amp is KG9. GM does not have generators in their vehicles but if it was a 1961 rolls Royce like I worked on today now that has a generator. if you have the odd ball MPG alternator gm uses on some models that could mess you up. the alternator that turns on and off all the time.

What kind of alternator does a GM vehicle use?

For your convenience we offer several ways to place an order Customer Credit Cards Will Be Billed National Quick Start Sales The CS-130D alternator was introduced as the standard application for most GM vehicles. It came standard as 100 & 105 amp models.

What’s the difference between a GMC 130 and 105 alternator?

The best way i can tell so far the difference and whats available, is by looking on rockauto. All the replacement units are 105 or 130, and i notice (assuming that their pictures are correct) that the 130’s have that plastic looking black stripe (spacer?) around them while the 105’s do not. Click to expand…

How to find out which alternator I have?

It has two listings for the parts, one for a 105 Amp alternator & different parts for a 145 Amp. How do I find out which one I have? I have checked the entire owners manual and the code inside the glovebox ( which is just a few dozen 4 digit numbers) I checked the alternator itself but could not find any type of ID plate.