Description
Practical value and everyday use
ACDelco GM Original Equipment 12590963 Air Conditioning Drive Belt Idler Pulley with Bracket is listed in Idler Pulleys. For a practical buying decision, start with this source-backed point: Category: Replacement Parts / Belts, Hoses & Pulleys / Pulleys / Idler Pulleys.
The source also records: Application note: GM-recommended replacement part for your GM vehicle’s original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function Country of Origin: United States Pulley Asm. Use this additional stated detail to judge day-to-day usefulness and package value: GM-recommended replacement part for your GM vehicle’s original factory component.
Value-focused decision
Compare those stated features and included items with the current on-page offer and the exact quantity needed. No performance claim is added beyond the source product record.
Complete source-backed product details
Pulley Asm
Source product highlights
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
- Country of Origin: United States




Satisfied buyer –
Part came in handy in a pinch, it was just difficult to get to the location but that’s not the item’s fault.
Geo –
This is the exact part I needed for my ‘07 Colorado 3.7l. Shipped earlier than estimated. I will order parts like this again. After all, I DO have an ‘07 Colorado!
yellow_armour –
Needed this part to keep things cool. It works great.
matt –
Product is just what it said it is. Works as it should
Robert Rodgers –
Bolt on and go.
Customer –
Thanks
Hernán J. Álvarez –
Excelente calidad, la pieza viene con su base completa, totalmente original instalada en mi Chevrolet Colorado LT 2007 4×2 crew cab.
MH –
Didn’t fit my 2008 Hummer H3 Alpha (5.3L). Guessing that it might fit a 2006 – Hummer but
Ciro –
Just installed.. on my Hummer H3.. and now my sqeeling and noise is gone for good .. Perfect GM oem original parts .. only the Best will do for me .. no other jobbers or no name brands .. when you need to fix it .. fix it right with the Oem GM parts .. Quality is Excellent.. Super Strong and solid
sotokrew –
This part fits exact and better than after market.
Customer –
2nd one I bought, it looks like an issue in the mold. It has a stress point where it cracks. There’s no way Gm doesn’t know about it. But they keep making the same part the same way. Typical GM.