Would this fit a 2009 gmc sierra 5.3l 1500? o'reilly's show this part number as a fit, but amazon says that it doesn't, so, am confused.

Amazon was wrong on my 2007 Chev Suburban 1500 5.3 Flex Fuel. They showed a fit for me and it was not. The one you show is a two-bolt bracket. Check your bracket. The one on my Suburban is a three-bolt bracket. If you look closely you should be able to see if there is another bolt on the lower left (from the view shown here it would be out of sight and what threw me). If it is not there on your vehicle then I would believe O'Reilly's and it should fit fine.

Can be used this part with volvo penta 4.3gl?

I am wondering why it cant be used on a volvo penta 4.3 gl. It is a gm motor and they use gm parts on this motor. It looks identical to the one thats on my 4.3. Does anyone kno what id different about this one???

I only see fitment for two bolts?it calls for 3 bolts

Important Information: This Tensioner With (2)Two Holes Is A Direct Replacement For The Earlier GM V8 4.8L, 5.3L, 6.0L Engines With (3)Three Hole Mounting Tensioner GM Superseded The Three Bolts With Two Bolts Tensioner This procedure is referenced in Dealer Bulletin ACC08-035. & Crate Engine/Dress-Up Parts in Bulletin GMP09-200 The Third Mounting Hole Was Eliminated In The New Design Due To Unnecessary Stress Load On The Water Pump. (DISREGARD UNUSED THIRD BOLT) when mounting the Replacement 12609719 Two Hole Tensioner

Does this include the pulley ??

This is the complete tensioner pulley. The idler pulley is a seperate part.

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⚙️ Keep your engine running smooth with GM’s precision tensioner – because your ride deserves the best.

SEAMLESS FIT FUNCTION - Machined exterior and exact OEM specs guarantee hassle-free installation and perfect compatibility.
OE QUALITY YOU CAN TRUST - Designed and validated by GM engineers specifically for Chevrolet, Buick, GMC, and Cadillac models.
DURABILITY MEETS INNOVATION - Incorporates the latest materials and tech updates for long-lasting reliability.
ENGINEERED FOR PEAK PERFORMANCE - GM Genuine Parts ensure your vehicle’s drive belt maintains optimal tension for flawless operation.
BACKED BY THE BRAND THAT BUILT YOUR RIDE - Every tensioner is rigorously tested and supported by General Motors for peace of mind.

The GM Genuine Parts 12609719 Drive Belt Tensioner is a spring-loaded pulley designed to maintain the correct tension on your vehicle’s serpentine belt. Engineered and validated by GM for Chevrolet, Buick, GMC, and Cadillac vehicles, it meets rigorous OE standards and incorporates the latest materials and design updates to ensure durability and perfect fitment.

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Manufacturer	ACDelco
Brand	GM Genuine Parts
Model	Drive Belt Tensioner
Item Weight	1.66 pounds
Product Dimensions	6.5 x 4.25 x 4.25 inches
Item model number	12609719
Exterior	Machined
Manufacturer Part Number	12609719
OEM Part Number	12609719

GM Genuine Parts 12609719 Drive Belt Tensioner

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