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COMP Cams 54021 Billet Aluminum Belt Tensioner for GM LS Engines

(Chevrolet Camaro 1998-2002, 2010-16, Corvette 1997-2013, Impala 2006-09, Monte Carlo 2006-07, SS 2014-17; Pontiac GTO 2004-06 + 4 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

54021
10 reviews
Sale Price

$211.95

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 54021 Billet Aluminum Belt Tensioner is a precision-engineered upgrade designed for GM LS1, LS2, LS3, LS6, and LS7 engines. This high-performance tensioner replaces the factory plastic unit with a robust CNC-machined billet aluminum construction that provides superior durability and consistent belt tension under high-stress conditions.

Key Features:

  • CNC-machined from billet aluminum for maximum strength and heat dissipation
  • Direct replacement for OEM belt tensioner—no modifications required
  • High-quality bearing system ensures smooth operation and extended service life
  • Maintains proper belt tension across the RPM range for reliable accessory drive performance
  • Black anodized finish for corrosion resistance and a professional appearance
  • Compatible with stock and aftermarket serpentine belt systems

This tensioner is ideal for street performance, racing applications, and engine builds where reliability and component quality are critical. The billet construction eliminates the common failure points associated with stock plastic tensioners, making it an essential upgrade for modified LS engines or high-mileage rebuilds.

Products specifications

Fits

Chevrolet Camaro 1998-2002, 2010-16, Corvette 1997-2013, Impala 2006-09, Monte Carlo 2006-07, SS 2014-17; Pontiac GTO 2004-06, Firebird 1998-2002, G8 2008-09, Grand Prix 2005-08; Avanti II 2001-04

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Crankshaft Gear Material

Billet Steel

AMAZON ASIN

B001O0FVV8

Engine Family

GM LS1, LS2, LS3, LS6, LS7

Camshaft Gear Material

Billet Steel

dont see how to claim the 3% discount

The customer service rep I was able to speak to very helpful and was able to email me an actual image of the product that I wanted before purchasing instead of the generic image that was being used on the website

Easy

Very easy to order

Great

Get what I ordered and it's well packaged and received on a timely basis.

quick

Seems pretty straightforward. Hope it arrives soon!

Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.

Product delivered as expected within 4 days. Lowest price on the web. No complaints.

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