SKU: 66098784255

GM Muscle Series Center Bolt Valve Covers - 241-290

Sale price$179.97 Regular price$199.97
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

GM Muscle Series Center Bolt Valve Covers - 241-290Overview: Holley's new GM Muscle Series accessories are the latest expansion to our officially licensed GM product line. These die cast aluminum valve covers and air cleaner kits were designed to have a no frills, modern style with prominent raised GM "Chevrolet and Bowtie" logos. Intended as an alternative to the existing GM ZZ6 accessories, Holley's GM Muscle Series dress up accessories can be the perfect addition to your engine bay if you are

Overview:

Holley's new GM Muscle Series accessories are the latest expansion to our officially licensed GM product line. These die-cast aluminum valve covers and air cleaner kits were designed to have a no-frills, modern style with prominent raised GM "Chevrolet and Bowtie" logos. Intended as an alternative to the existing GM ZZ6 accessories, Holley's GM Muscle Series dress up accessories can be the perfect addition to your engine bay if you are searching for a subtly custom variation from the OEM options. All GM Muscle Series accessories are available in four custom finishes: natural cast, polished, satin black, and factory orange (all finishes have machined "Chevrolet and Bowtie" logos aside from polished version). The Small Block Chevy center bolt valve covers (designed to fit Vortec/ZZ4/ZZ5/ZZ6) feature a generous internal height for exceptional valve train clearance and include pre-installed internal baffling, polished mounting hardware, and oil fill / PCV grommets (valve cover gaskets not included).

Features:

  • Features clean, modern styling with high definition “Chevrolet and Bowtie” logo
  • Specifically designed for GM ZZ6 engines, but will fit all Small Block Chevy applications with center bolt style cylinder heads (Vortec, ZZ4, ZZ5, ZZ6) – polished mounting hardware included
  • Die-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
  • Emissions compliant valve covers include pre-installed internal oil baffles as well as an oil fill plug and PCV grommet
  • Offered in four unique finishes to fit your style: natural cast aluminum with machined logo (ready for custom paint), polished, satin black with machined logo, and factory orange with machined logo

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Application GM SBC ZZ6/Vortec
Baffle Included Yes
Bolt Pattern Center Bolt
Brand Holley
Breather(s) Included No
Emission Code 3
Finish Natural
Gaskets Included No
Gromment(s) Included Yes
Hardware Included Yes
Height Standard
Logo Chevrolet with Bowtie
Material Cast Aluminum
Mounting Hardware Included Yes
Product Type Valve Cover
Style SBC Center Bolt
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 66098784255

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4.4 ★★★★★
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Product Reviews
T
T
Lowell, US
★★★★★ 5
as described
The size of these two o rings matches the description. Did not use in a vehicle so cannot speak on the fit of that, but size was accurate and they worked for my use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
N
Verified Purchase
nate
Lexington, US
★★★★★ 5
Nice item
So far so good my power steering is not leaking anymore.
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Reviewed in the United States on October 3, 2025
J
Verified Purchase
Juan A lopez
Chelsea, US
★★★★★ 5
The quality it’s the best
Best filters ever bought I will buy it again
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Reviewed in the United States on March 22, 2026
R
Verified Purchase
RC Zav
Charlottesville, US
★★★★★ 5
Recomendado 10/10
Fácil de instalar y se ve de buena calidad a comparación del que tenía en Valvoline por casi el mismo precio, compré este filtro para mi Civic 2017
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Reviewed in the United States on March 1, 2026
M
Verified Purchase
m.vq35
Waukegan, US
★★★★★ 1
Bad
Horrible air flow I don’t recommend and yes it was installed correctly. Don’t waste your money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026

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