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GM Genuine Parts Drive Belt Tensioner
OE

GM Genuine Parts Drive Belt Tensioner

GM Part #12654271

ACDelco Part #12654271

MSRP$84.61*

GM Genuine Parts Drive Belt Tensioner Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Helps keep drive belt at correct tension to help maintain proper function
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.

About this product

GM Genuine Parts Drive Belt Tensioner Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These assemblies are spring-loaded pulleys designed to draw tension on your vehicle's serpentine belt. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Helps keep drive belt at correct tension to help maintain proper function
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

MaterialPlastic
ColorBlack
Housing MaterialAluminum
Mounting Hole Quantity1
FlangedNo
Belt TypeSerpentine
ClassificationOE
Mounting Hole Diameter0.41 in / 10.5 mm
Length6.57 in / 166.89 mm
Inside Diameter2.562in
Width2.766 in / 1.19 mm
Groove Quantity6
Pulley 1 FlangedNo
Pulley Quantity1
Mounting Bolt IncludedNo
Outside Diameter77.39 in / 30.14 mm

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Before purchasing and installing a drive belt tensioner assembly, make sure it is the correct size and fit for your vehicle.

  • Be sure to have the replacement tensioner properly aligned to the other drive component pulleys.
  • Have your vehicle inspected as soon as possible if the 'Service Engine Soon' light illuminates.
  • Have your vehicle inspected immediately if the 'Service Engine Soon' light flashes rapidly, as this could indicate an engine misfire condition which may damage your engine and/or engine emission components.
  • Regularly inspect assembly for signs of damage or wear, and replace them if signs of damage are found.

Signs of wear for drive belt tensioner assembly include but are not limited to:

  • Worn or cracked tensioner pulleys
  • Drive belt squeal
  • Tensioner misalignment

ModelBody StyleTrimYear(s)
Express 25002018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Express 35002018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Express 45002021, 2022, 2023, 2024, 2025, 2026
LCF 35002020, 2021, 2022, 2023
LCF 3500HG2024, 2025, 2026

Frequently Asked Questions

Yes. If the drive belt is too tight, damage to other drive components may occur.