KAC Starter Motor 17877N

Key points

The 1.4 kW rating and 10-tooth, clockwise-drive design make this KAC starter a specific replacement candidate for a 2002 Jeep Liberty with the 3.7L engine. Its listed 12V power and PMGR design give you concrete details to compare against the starter being replaced, rather than relying on the vehicle name alone.

The product listing also gives several reference numbers, including 56041641AB, 56041641AC, and M1T86883. Those can help narrow down a match, but they do not replace checking your vehicle and existing part before ordering.

Best use cases

This starter is listed for one specific application: a 2002 Jeep Liberty 3.7L. If that matches your vehicle, the stated voltage, power rating, rotation, and tooth count provide useful points for a parts comparison. A quick practical step is to read the number on the old starter and compare it with the references in the listing before taking the vehicle apart.

A solid pick if you’re replacing a starter and can confirm the vehicle and part details. It might not be a great match if your Liberty has a different engine or model year, the listing does not establish fitment for those versions. If the starting problem could instead come from the battery or wiring, identifying the fault first may make more sense than choosing a starter by symptom alone.

Tips for day-to-day use

Keep in mind that the listing advises turning the key back as soon as the engine starts so the starter drive pinion can disengage. That small habit is intended to reduce unnecessary wear. If you hear a gear-tooth beating sound while starting, stop, let the starter come to a complete stop, and then try again rather than holding the key in the start position.

The stated clockwise rotation and 10 teeth are especially useful comparison points if you have the old unit in hand. They won’t, by themselves, confirm every vehicle-specific connection or fit detail, so use the reference numbers and vehicle information together. The listing describes the unit as meeting or exceeding OE standards, but gives no test results or warranty details to assess independently.

Before you decide

Which vehicle is this starter listed for? The stated fitment is a 2002 Jeep Liberty with a 3.7L engine. Verify your vehicle information before purchase, broader fitment is not provided.

Which reference numbers are included? The listing names 17877N, 56041641AB, 56041641AC, M1T86883, M1T86882, 17877, 178778, 88861903, 91273349, and MPA17877. Compare them with your existing part where possible.

What should you do if it makes a grinding or tooth-beating sound? Stop cranking, allow the starter to stop, and try again, as the listing advises.

Should you buy it?

Choose this KAC starter when your vehicle matches the stated year and engine and its reference numbers and listed specifications line up with the part you need. The key limitation is narrow, vehicle-specific fitment: this information doesn’t confirm compatibility with other Liberty years or engine versions. If you can’t verify the match, or haven’t established that the starter is the cause of the starting issue, pause before buying. That’s a more useful check than treating a starter replacement as a fix for every no-start problem.