Holley's die cast 2-piece valve covers for GM Gen V LT engines mount and conceal the Gen V style LT coil bodies for a cleaner engine bay. A cast aluminum coil-mounting base carries the coils, and this version is topped with a vintage-style coil cover with a prominent GM Licensed "Chevrolet" script logo and cast-in wiring provisions with a satin black finish. The design also clears popular performance ignition coils, including MSD Blaster coils.
Specifications:
- Brand: Holley
- Application: GM Gen V LT Engines
- Construction: Die Cast Aluminum
- Design: 2-piece, coil-mounting base with integrated coil cover
- Top Style: GM Licensed Chevrolet script
- Color/Finish: Satin Black
- Baffled: Yes
- Coil Mounting Studs: Yes, on baseplate
- Height: Standard
- Coil Mounting Holes: Early and late LT coil patterns
- Oil Fill Cap Included: Yes, low-profile billet
- Gaskets: Uses OEM-style valve cover gaskets
- Warning: California Proposition 65
- Part Number: 241-377
The valve covers include a low-profile billet oil fill cap and the coil mounting and dress-up hardware, and use OEM-style valve cover gaskets for easy maintenance. The covers have two sets of coil mounting holes, one for early LT coils and one for late LT coils.
FAQ
What engines do the Holley 241-377 valve covers fit?
They are designed for GM Gen V LT engines.
Do they work with early and late LT coils?
Yes. The covers have two sets of mounting holes, one for early LT coils and one for late LT coils.
What gaskets do they use?
They use OEM-style valve cover gaskets.
Is an oil fill cap included?
Yes. A low-profile billet oil fill cap is included, along with the coil mounting and dress-up hardware.

