Top 8 Serpentine Belt Tensioner – Automotive Replacement Belt Tensioners

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1. ACDelco


ACDelco 38158 Professional Automatic Belt Tensioner and Pulley Assembly

ACDelco #ad - Patented vibration damping system increases tensioner, belt, and accessory component life for long lasting use. Provides full line coverage for domestic, import, and heavy duty applications. Torsional round spring design provides consistent tension and does not allow contamination for enhanced durability. Ensures proper belt tension, alignment, and damping for superior performance.
BrandACDelco #ad
ManufacturerACDelco #ad
Height3.6 Inches
Length8.8 Inches
Weight1 Pounds
Width4.8 Inches
Part Number38158
WarrantyLimited Lifetime Warranty (Parts Only). Please see for more details.

2. ACDelco


ACDelco 12609719 GM Original Equipment Drive Belt Tensioner

ACDelco #ad - Helps keep drive belt at correct tension to help maintain proper function. Gm-recommended replacement part for your GM vehicle’s original factory component. Pulley width : 1-1/4 Inch. Manufactured to gM OE specification for fit, form, and function. Offering the quality, reliability, and durability of GM OE.
BrandACDelco #ad
ManufacturerACDelco #ad
Height4.25 Inches
Length6.5 Inches
Weight1.66 Pounds
Width4.25 Inches
Part Number12609719
Warranty24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see for more details.

3. Evan Fischer


Accessory Belt Tensioner Serpentine Type compatible with CX7 07-12 Mazda 5 12-14 Assembly

Evan Fischer #ad - 6-grooved; 067 in. Inside diameter; 2. 76 in. Width. Serpentine Pulley. A high quality, direct fit OE Replacement Accessory Belt Tensioner from Evan-Fischer. Outside diameter; 098 in.
BrandEvan Fischer #ad
ManufacturerEvan-Fischer #ad
Part NumberEVA1033051634
Warranty1-year UNLIMITED mileage warranty coverage

4. ACDelco


ACDelco ACK040378HD Professional Accessory Belt Drive System Tensioner Kit with Belt and Tensioner

ACDelco #ad - Has a lineup of parts that include 78 kits covering more than 1, 300 vehicle applications for both import and domestic applications. Professional, premium aftermarket replacement. Includes a serpentine belt, idlers, tensioners, and supporting hardware with detailed installation instructions. Provides the performance and dependability you expect from ACDelco. Does the job right the first time and reduces comebacks by always replacing the serpentine belt, idlers, and tensioners at the same time.
BrandACDelco #ad
ManufacturerACDelco #ad
Part NumberACK040378HD
WarrantyLimited Lifetime Warranty (Parts Only). Please see for more details.

5. GearWrench


GEARWRENCH 15 Pc. Ratcheting Serpentine Belt Tool Set, 3680D

GearWrench #ad - Combining the innovation of a gearWRENCH ratcheting wrench with the requirements of the serpentine belt removal tool to provide the best possible combination.

Includes drive tools: long bar, and 3/8", special gearWrench Ratcheting Wrench, 1/2" and 3/4" Adapters. Includes crowsfoot: 13mm, 14mm and 15mm. Long bar can hold sockets directly or attach to the ratcheting wrench for maximum access. Complete tool set for removing or installing the serpentine belt on vehicles with a spring loaded belt tensioner pulley. Includes 6 point sockets: 13 millimeter, 15 millimeter, 17 millimeter, 16 millimeter, 14 millimeter, 18 millimeter and 19 millimeter.
BrandGearWrench #ad
ManufacturerGearWrench #ad
Height2.5 Inches
Length15.55 Inches
Weight1.35 Pounds
Width5.05 Inches
Part Number3680D
WarrantyStandard Limited Lifetime

6. Gates


Gates 90K-38332 Complete Serpentine Kit

Gates #ad - Our complete serpentine kits provide customers a time-saving convenient way to purchase all the premium parts needed in one pre-packaged kit to completely restore their serpentine belt drive system. Gates complete serpentine Kits make it easy to service the entire serpentine belt drive system. Components of the gates complete Serpentine Kit are sealed and packed securely to maintain outstanding quality and condition during shipping.
BrandGates #ad
ManufacturerGates #ad
Height7 Inches
Length11 Inches
Weight3.49 Pounds
Width8 Inches
Part Number90K-38332

7. Dorman


Dorman, Techoice 419-022 Automatic Belt Tensioner

Dorman #ad - Highly resistant to heat and shock. Quality tests on this part include torque testing, corrosion-resistance testing, spring-back testing, and on-vehicle testing. Original equipment oe Number: 1662028090 Solid construction for long-lasting durability. Designed to fit properly every time.
BrandDorman #ad
ManufacturerDorman - Techoice #ad
Height3.03 Inches
Length9.84 Inches
Width6.1 Inches
Part Number419-022
WarrantyLimited Lifetime Warranty

8. Powerbuilt


Powerbuilt Alltrade 648629 Kit 52 Serpentine Belt Tool Set

Powerbuilt #ad - Designed for removing and installing serpentine belts on vehicles with spring-loaded belt tensioners. Includes accessories for specific vehicle applications, Chrysler, including GM, Ford, SAAB, VW and Volvo. Built to exceed tool standards. Carry case includes usage photos and instructions. Tool solutions for most all situations. Made to be the most reliable tools in the market today.
BrandPowerbuilt #ad
ManufacturerAlltrade Tools #ad
Height2.13 Inches
Length4 Inches
Width28.13 Inches
Part Number648629