Holley 2-Piece Cast Aluminum Valve Covers - Gloss Red Finish

Revamp your LS engine's appearance with Holley's stylish 2-Piece Cast Aluminum Valve Covers. These covers provide a fantastic way to give your engine a fresh look without the hassle of complicated adapter systems or relocating your coils. Designed with a modular approach, these valve covers maintain OE height and come with an internally baffled base that features built-in coil mounts for popular Gen I and Gen V LS coil bodies. Plus, the vintage finned overcover elegantly conceals the coils and wiring mess, allowing you to enjoy the full benefits of coil-on-cover ignition setups without sacrificing style.

Each coil cover showcases our Vintage Series fins adorned with a classic Holley script logo, blending seamlessly with other finned Holley accessories like our LS valley covers and 14" round air cleaners. You’ll appreciate the thoughtful design, which includes cast-in provisions for spark plug boots and coil wiring harnesses, eliminating the need for any extensions or custom wiring.

When you choose this 2-Piece LS valve cover set, you’ll receive a low-profile billet oil fill cap, all the necessary hardware and spacers for mounting both versions of LS coil bodies, and 12-point dress-up hardware with grommets for the coil covers. Available in five unique finishes—natural cast, polished, satin black, factory orange, and striking gloss red (with black, factory orange, and gloss red sets featuring machined fins and logo details)—you can pick the perfect match for your engine.

Important Downloads:

• Instructions for Part #241-174

Features:

• Cast aluminum 2-Piece LS valve covers designed to accommodate both Gen I and Gen V style LS coil bodies.
• Maintain the performance of factory coil-on-cover ignition without compromising aesthetics.
• Base fits LS1, LS2, LS3, LS6, and LS7 engines.
• Internally baffled ventilation system for optimal performance.
• Designed with clearance for .750" lift cam using stock-style rocker arms.
• Coil cover features Holley Vintage Series style fins and script logo with built-in wiring provisions.
• No need for coil relocation, wire harness extensions, or custom spark plug wires.
• Includes a low-profile billet oil fill cap.
• Comes with all necessary coil mounting and dress-up hardware.

Specifications:

• Application: GM LS Engines
• Baffle Included: Yes
• Coil Mounting Studs: Yes, on Baseplate
• Emission Code: 4
• Finish: Gloss Red
• Gasket Included: No
• Grommet(s) Included: No
• Height: 3.75"
• Logo: Holley Script
• Material: Cast Aluminum
• Mounting Hardware Included: Yes
• Oil Fill: Yes
• Product Type: Valve Cover
• Style: 2-Piece LS
• Valvetrain Clearance: .750" lift cam with stock-style rocker arms
• Warranty: Limited 90 Day

Notes:

• These valve covers come with integrated coil mounts specifically designed for Gen I and Gen V style LS coil bodies (both OE and most aftermarket). Check the part numbers below for compatibility:
• Gen I Style LS Coil Body P/N's:
• GM: 12558948
• MSD: 8262, 82628 (set of 8) / 82623, 826238 (set of 8)
• AC Delco: D580
• Gen V Style LS Coil Body P/N's:
• GM: 12570616
• Holley: 410004
• Accel: 140043, 140043-8 (Set of 8) / 140043K, 140043K-8 (Set of 8)
• MSD: 8265, 82658 (set of 8) / 82653, 826583 (set of 8)
• AC Delco: D510C
• Coils Not Included
• You can reuse OE LS valve cover mounting hardware and gaskets, but it’s wise to inspect them before installation to see if replacements are needed.