What does a belt tensioner do?

A belt tensioner's job is to keep the accessory drive belt at the correct tightness. This ensures that components like the alternator, power steering pump, and water pump spin at the right speed.

Should I replace the tensioner when I replace the belt?

It's often recommended to inspect and replace the tensioner when you replace the accessory drive belt. A worn tensioner can cause premature belt wear or lead to belt slippage, so replacing both at once can save you future headaches.

What vehicles does this Gates tensioner fit?

This Gates tensioner is designed for the V-6 3.6L engine in the 2004-2009 Cadillac CTS, the 2004-2009 Cadillac SRX, and the 2005-2011 Cadillac STS.

2005-2011 Cadillac STS Belt Tensioner

Name: Gates 04-09 Cadillac CTS V-6 3.6L Water Pump Belt Drive Tensioner
Brand: Gates
SKU: gates-gates-04-09-cadillac-cts-v-6-3-6l-water-pump-belt-drive-tensioner-t14-882386
Price: 94.59 USD
Availability: BackOrder

Gates 04-09 Cadillac CTS V-6 3.6L Water Pump Belt Drive Tensioner

$94.59

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2005-2011 Cadillac STS. This Gates belt tensioner keeps your accessory drive belt properly tightened for reliable engine operation.

Key Features

Fits 2005-2011 Cadillac STS.
Also fits 2004-2009 Cadillac CTS and 2004-2009 Cadillac SRX.
Features a durable steel pulley.
Includes a robust spring for consistent belt tension.
Helps maintain proper operation of accessory drive components.
Designed as a direct replacement part.

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Will it fit your car?

Fits these vehicles

Cadillac CTS 2004-2009
Cadillac SRX 2004-2009
Cadillac STS 2005-2011

Product Details

This Gates belt tensioner is built with a steel pulley and a robust spring mechanism, ensuring it maintains consistent tension on your V-6 3.6L engine's accessory drive belt. Proper belt tension is crucial for the smooth operation of components like the alternator, power steering pump, and water pump. Without it, you can experience issues like squealing belts, poor charging system performance, or even overheating if the water pump isn't turning correctly.

Designed as a direct replacement for your 2004-2009 Cadillac CTS, 2004-2009 SRX, and 2005-2011 STS, this tensioner fits right into place. The steel pulley is durable and resists wear, while the spring is calibrated to provide the correct amount of pressure throughout the belt's lifespan. Replacing a worn or weak tensioner can prevent premature belt wear and ensure all your engine's accessories are powered reliably.

When you're replacing your accessory drive belt, it's often a good idea to inspect and potentially replace the tensioner at the same time. This helps ensure the new belt performs optimally and lasts longer. Refer to your vehicle's service manual for specific installation procedures.