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Holley 241-378 GM LT 2-Piece Valve Covers Factory Orange Modern Top

Manufacturer

Picture for manufacturer Holley

Part Number

241-378
9 reviews
Sale Price

$649.95

2 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Holley 241-378 is a 2-piece modular valve cover set designed for GM Gen V LT-series engines, finished in Factory Orange with a Modern Top overcover style. These covers let you dress up your LT engine without complicated adapter systems or remote coil relocation hassle.

The modular design consists of an OE-height, internally baffled valve cover base with integrated coil mounts compatible with popular LT-series coil bodies (coils not included), paired with a sleek Modern Top overcover that conceals the coils and wiring harness. This allows the full performance benefits of coil-on-cover ignition while delivering a clean, factory-inspired engine appearance.

Key Features:

  • 2-piece modular construction — base and Modern Top overcover sold as a set
  • Factory Orange finish with machined accents for a bold, OEM-inspired look
  • OE-height base with internal baffle for proper oil control and ventilation
  • Integrated coil mounts — no remote coil relocation required
  • Cast-in provisions for spark plug boots and coil wiring harness — no extensions or custom wiring needed
  • Includes low-profile billet oil fill cap, coil body mounting hardware and spacers, 12-point dress-up hardware, and rubber grommets
  • Compatible with Gen V LT-series engines (LT1, LT4, LT2, and related platforms)

The Holley 241-378 valve cover set is a straightforward, bolt-on upgrade that brings a premium custom look to your LT-powered build while maintaining full coil-on-cover ignition functionality.

Good website, good prices. Could use a little better info regarding order fulfillment.

Great transaction, very satisfied.

Best price, quick shipping, packed well. Exactly what I wanted.

Ordered it, came it good time, was the right one, put in my car, now it's working like a beauty. Couldn't ask for anything different

good service

This company is super fast to get you your order! I ordered online and figured it would be at least a couple days or so until my order would even get processed. I think they overnighted it to me! The package showed up undamaged and sealed. Unfortunately, I may have to return the product as I am thinking I would like the spikes shorter but that is no fault of Thmotorsports. Hopefully their customer service is as superior as their ordering and shipping. At this point I would definitely shop there again and recommend them.

THMOTORSPORTS responded and shipped my purchases of Auxbeam products very quickly. When received, everything looked to be in great shape. They also had the best prices of several vendors that I looked at. I would strongly recommend anyones next purchase to take a good look at THMOTORSPORTS as they definitely delivered on this purchase.

Easy and fast! Thanks!

It's the information I needed for my boat motor. The only issue I had with this maintenance manual was the way the manual was finished. I've worked the the graphic arts industry for 50 years and am well versed in print finishing. The book will no doubt stay together, however there is excessive glue on the spine as the cover wraps around the front/back that distracts from the overall appearance.

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Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy