Is the pulley steel or plastic?

the pulley is steel and the handle is aluminum very strong and durable

This is advertised as an ac delco part, but the picture shows litens made in canada. which is it?

Came in a box with a hologram ACDelco sticker. The part said Litens, Made in Canada. Great Part Works well; would buy again. Sometimes other companies make all the parts & just put different names for different companies. Great part works well you will be happy with this part, I was.

What size bolt do you need to install?

You have to use the old bolt from the old part.

is it compatible with trailblazer 2008 4.2??

Yes it will work on Chevy Trailblazers from 2002-2009 4.2 engines

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⚙️ Keep your GM running like new — because your ride deserves the best!

GM RECOMMENDED RELIABILITY - Trusted by GM to maintain optimal drive belt tension and vehicle function.
BUILT TO LAST WITH OE QUALITY - Crafted to GM Original Equipment standards for unmatched durability and longevity.
EFFORTLESS MAINTENANCE UPGRADE - Lightweight and compact design (1.81 lbs, 11.25x4.75x4.75 in) for easy installation and peace of mind.
PRECISION ENGINEERED FOR PERFECT FIT - Seamlessly replaces your GM vehicle’s original tensioner for flawless performance.
METICULOUSLY TESTED FOR DEFECT FREE PERFORMANCE - Every unit undergoes rigorous quality checks to ensure flawless operation.

The GM Genuine Parts 12573024 Drive Belt Tensioner is a factory-spec replacement part designed to maintain optimal drive belt tension in GM vehicles. Manufactured by ACDelco to meet GM OE standards, it ensures reliable, durable performance with precise fit and defect-free quality, making it the trusted choice for professional-grade vehicle maintenance.

Reviews

H**R

Works great

Nice to have avery quiet belt again... Great quality and original fit

18.06.2024

M**M

Oem

Oem item for GM cars, exact as original part

7.06.2024

H**.

great fit

no problems seems to have done good

4.09.2024

M**E

OEM

Exactly the same as the part that came with the 2004 Trailblazer. Easy to install. Vary happy with results.

9.04.2023

L**E

OEM is the way to go.

Installed an after market and a new belt and after a couple hours it began to squeak again. Then I installed this OEM belt tensioner and the squeak was magically gone. Even with the AC on full blast.

7.02.2024

C**N

oem quality part 👍😃 only 1 bolt to remove and install i am very happy with this product

Great part easy to remove and install no more noise when i turn on air conditioner or turn corner im very happy with this part

11.08.2021

K**S

PULLY TENSIONER

I Liked THIS BUT TENSION,NOISE LEVEL BUT FINALLY GOT THIS WORKING THANK YOU.

25.09.2024

A**R

Belt tensioner

Part was received when promised. It was original a.c. delco as advertised. Fit and function was perfect. Will buy from this supplier again when needed.

24.06.2023

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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€ 165.50

Duties & taxes incl.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Manufacturer	ACDelco
Brand	GM Genuine Parts
Model	Belt Tensioner
Item Weight	1.81 pounds
Product Dimensions	11.25 x 4.75 x 4.75 inches
Item model number	12573024
Exterior	Painted
Manufacturer Part Number	12573024
OEM Part Number	12573024

GM Genuine Parts 12573024 Drive Belt Tensioner

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