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Best belt tensioners - September 2025

Last Updated - September 10, 2025

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ACDelco

ACDelco Gold 39390 Drive Belt Tensioner

ACDelco

$130.98

More Details
Main highlights
- Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
- Premium aftermarket replacement part
- Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
- Designed to keep drive belt at proper tension
$130.98
2
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Motorcraft

Motorcraft BT-70 Belt Tensioner

Motorcraft

$77.75

More Details
Main highlights
- Part Number: BT70
- Package Weight: 1.6 pounds
- Package Dimensions: 5.63 L x 11.25 H x 4.13 W (inches)
- Country of Origin : China
$77.75
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ACDelco

ACDelco Gold 38158 Drive Belt Tensioner Assembly with Pulley, Aluminum w/ Black Pulley

ACDelco

$36.54

More Details
Main highlights
- Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
- Premium aftermarket replacement part
- Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
- Designed to keep drive belt at proper tension
$36.54
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

A-Premium

A-Premium Belt Tensioner Assembly with Pulley Compatible with Subaru Forester 2011-2018, Impreza 2012-2015, Legacy 2013-2019, Outback WRX, Replace# 23769AA040, 23769AA05A

A-Premium

$40.99

More Details
Main highlights
- [Vehicle Fitment]: Compatible with Subaru BRZ 2013-2019 H4 2.0L, Crosstrek 2016-2017 H4 2.0L (GAS), Forester 2014-2018 H4 2.0L, Forester 2014-2018 H4 2.5L (GAS), Forester 2011-2013 H4 2.5L (Naturally Aspirated; GAS), Impreza 2012-2015 H4 2.0L, Legacy 2013-2019 H4 2.5L, Outback 2013-2019 H4 2.5L, WRX 2015-2020 H4 2.0L, XV Crosstrek 2013-2015 H4 2.0L (GAS)
- [Specifications]: ①Pulley Quantity: 1; ②Belt Type: V-Ribbed; ③Outside Diameter: 70(mm); ④Bearing Bore Inside Diameter: 17(mm); ⑤Width: 25.5(mm); ⑥Material: Thermoplastic
- [Reference Number]: 23769AA040, 23769AA05A, 39359, APV3181
- [OE Performance]: Perfect match with the original part for sturdy and durable construction. Maintain proper belt tension and rotate smoothly and quietly
- [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted belt tensioner assembly. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.
$40.99
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Gates

Gates 38332 DriveAlign Automatic Belt Drive Tensioner

Gates

$58.70

More Details
Main highlights
- Torsional round spring design provides reliability as well as consistent tension
- Patented vibration-damping system absorbs extreme vibration to improve tensioner, as well as belt and accessory, life
- Patented labyrinth seal protects internal components to meet or exceed OE life expectancy requirements
- Manufactured using the same or improved technology and quality materials as the Original Equipment Manufacturer (OEM) part, assuring a factory match
- Comprehensive line includes parts to fit cars, vans, SUVs and light trucks, domestic and import (European and Asian)
$58.70

Best belt tensioners - September 2025

ACDelco Gold 39390 Drive Belt Tensioner

Motorcraft BT-70 Belt Tensioner

ACDelco Gold 38158 Drive Belt Tensioner Assembly with Pulley, Aluminum w/ Black Pulley

A-Premium Belt Tensioner Assembly with Pulley Compatible with Subaru Forester 2011-2018, Impreza 2012-2015, Legacy 2013-2019, Outback WRX, Replace# 23769AA040, 23769AA05A

Gates 38332 DriveAlign Automatic Belt Drive Tensioner

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