The COMP Cams Belt Tensioner W/Idler Gm LS is intended for the verified vehicle applications listed below. Match manufacturer part number 54021, exact engine, cylinder head, valvetrain, cam specifications, supporting components, clearances, and every product note before ordering.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1997-2013 | Chevrolet | Corvette | Base |
| 2010-2013 | Chevrolet | Corvette | Grand Sport |
| 1998 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 2001-2004 | Chevrolet | Corvette | Z06 |
| 2006-2013 | Chevrolet | Corvette | Z06 |
| 2011 | Chevrolet | Corvette | Z06 Carbon |
| 2001-2004 | Avanti | II | Base |
| 2010-2015 | Chevrolet | Camaro | SS |
| 2014-2015 | Chevrolet | Camaro | Z/28 |
| 2013 | Chevrolet | Corvette | 427 |
| 2008 | Chevrolet | Corvette | 427 Limited Edition Z06 |
| 2003 | Chevrolet | Corvette | 50th Anniversary Edition |
| 2006-2007 | Chevrolet | Monte Carlo | SS |
| 2014-2017 | Chevrolet | SS | Base |
| 2009 | Pontiac | G8 | GXP |
| 2005-2008 | Pontiac | Grand Prix | GXP |
| 2004-2006 | Pontiac | GTO | Base |
Specifications
| Manufacturer | COMP Cams |
|---|---|
| Manufacturer Part Number | 54021 |
| Product Type | Belts - Timing, Accessory |
| Fitment Type | Vehicle specific, verify engine configuration |
What's Included
One new COMP Cams product in the exact configuration and quantity identified by manufacturer part number 54021. Springs, retainers, locks, pushrods, lifters, rockers, timing components, fasteners, lubricants, tools, and calibration are included only when expressly stated for this exact part number.
About COMP Cams
COMP Cams develops camshafts, valvetrain components, timing products, and engine-building tools for performance applications. Correct selection remains exact-engine, exact-valvetrain, exact-interface, and exact-part-number specific.
Related COMP Cams Products
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- COMP Cams Gen IV 5.3L GM LS DOD Premium Kit
Browse the COMP Cams collection for related camshafts, springs, retainers, lifters, rockers, timing components, and engine tools.
Frequently Asked Questions
Will this COMP Cams product fit my 1997-2013 Chevrolet Corvette Base?
That application is listed, but confirm the exact engine family, valvetrain, cylinder head, cam specifications, supporting parts, and manufacturer part number.
Are valve springs or other supporting parts required?
Requirements depend on the exact camshaft and engine combination. Verify springs, retainers, locks, pushrods, lifters, rockers, timing components, clearances, and calibration before assembly.
Does installation require engine measurements?
Yes for most internal valvetrain work. A qualified builder should verify piston-to-valve clearance, spring pressure and travel, coil bind, retainer clearance, geometry, lash or preload, and cam timing.
Installation Instructions
Follow the current COMP Cams and engine-manufacturer instructions for this exact part number. Verify clearances, spring pressure and travel, geometry, lash or preload, fasteners, lubrication, cam timing, break-in, and calibration requirements before assembly. Inspect and test the completed installation before full-load operation.
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