Overview
The Crown Automotive 5142573AA is a timing belt idler pulley for 2.5L and 2.8L diesel Jeep engines. It fits 2005–2006 Jeep Liberty (KJ) models in the 65th Anniversary Edition, Limited, Renegade, Rocky Mountain Edition and Sport trims.
An idler pulley guides the timing belt along its path and holds it at the right tension. Idler pulleys are commonly replaced during timing belt service, and the belt should be routed the same way as the original.
Key features
- Timing belt idler pulley type
- Made for 2.5L and 2.8L diesel engines
- Vehicle list covers 2005–2006 Liberty (KJ) trims
- Crown Automotive part number 5142573AA
- UPC 848399036596 for matching
Timing belt service checks
An idler pulley works alongside the timing belt, the tensioner and other pulleys, so wear in one part can affect the others. When the belt is off, rotate the idler by hand and feel for roughness, noise or side play in the bearing. A pulley with a rough or wobbling bearing should be replaced rather than reused, since a failed bearing can throw the belt off the pulley during operation.
Diesel engines put heavy loads on the timing system, so belt routing and tension matter. Route the new belt exactly as the original was routed, and check that the timing marks line up before the engine is started. Inspect the belt for cracks, glazing and missing teeth, and replace it along with any tensioner that shows wear. Work done during a belt service is easier to schedule once, so inspect the water pump at the same time.
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 5142573AA |
| UPC | 848399036596 |
| Type | Timing belt idler pulley |
| Engine | 2.5L and 2.8L diesel |
| Fitment type | Universal fit, as listed; rely on the vehicle list below |
Vehicle fitment
It fits the following vehicles:
- 2005–2006 Jeep Liberty (KJ), 65th Anniversary Edition, Limited, Renegade, Rocky Mountain Edition and Sport
Other Liberty model years and Wrangler or Grand Cherokee models are not in this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Timing belt work requires the engine to be timed correctly after replacement, so follow the engine service manual for belt routing and tension.
What’s included
Check whether bolts or a belt are needed for your installation before fitting the pulley.
