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Since 1952

Holley 242-1 B/B Chevy Replica LS Coil Covers

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Holley 242-1 B/B Chevy Replica LS Coil Covers
Holley 242-1 B/B Chevy Replica LS Coil Covers
Holley 242-1 B/B Chevy Replica LS Coil Covers
Holley 242-1 B/B Chevy Replica LS Coil Covers
Holley 242-1 B/B Chevy Replica LS Coil Covers
Holley 242-1 B/B Chevy Replica LS Coil Covers

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Please NOTE the following about this product:

  • This item is sold as a pair.



Q & A

What's in the Box

Do you own a vehicle with an LS based engine, but love the looks of a big–block Chevy? These coil covers from Holley are equally at home on a 2010 Camaro or a LS swap muscle car, truck or any ride needing to cover the factory LS coils. They're ready to paint so use your imagination! The covers are easily installed by using basic hand tools. Just replace a few coil bracket mount bolts with the included ball studs and snap the covers in place.

  • Cover those unsightly coil packs on your GM LS engine
  • Ultra lightweight glass-filled nylon composite construction
  • Paint to match your color scheme
  • Trim to fit your application
  • OEM-style snap-on mounting
  • Oil fill adaptor and cap included
  • Fits LS2, LS3 & LS7 engines as well as other LS family engines using LS3 style coils & valve covers

Note: Coil cover may require minor trimming on typical hot rod or swap application. Use on OE applications may require more extensive trimming to clear factory componentry (A/C box, brake booster, front drive accessories etc.).

425-2421 Instructions (PDF)

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Chevy LS1/LS6 Finned Valve Covers, Plain
(Part #5721012)

If you are running a 97-Up LS1 style engine in your classic street rod, these valve covers are for you. These finned covers have a cast-in breather/PCV hole in each cover. They only use the 2 end bolts for mounting (stock uses four) for a cleaner look. The sand cast aluminum construction provides stiffness so four bolts are not needed to apply pressure evenly to the gasket. Comes with gaskets and hardware.

  • Strong sand-cast aluminum construction
  • Thick side walls and gasket flanges that will not bend when bolts are tightened
  • Cast-in internal baffles
  • Clears Jesel roller rockers
  • Mounting hardware included

Note: There are no provisions for the original coil packs. Use our relocation harness to move coil packs to the fenders or firewall. 

Finned Valve Cover Specs (PDF) 

Item Details

You paint or polish.