SKU: 23308478386

Muscle Series Valve Covers for Small Block Chevy Engines Polished Finish 241-137

$213.72 $237.47
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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16

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Description

Muscle Series Valve Covers for Small Block Chevy Engines Polished Finish 241-137Overview: Holley is pleased to introduce their Muscle Series Small Block Chevy valve covers inspired by 1970's era GM factory L82 LT1 Z28 equipped engines. These valve covers are a continuation of Holley's Vintage Series valve cover line featuring a classic finned design and retro styling cues. Each set consists of one valve cover with a twist in oil fill knockout (oil fill cap included) and one with a recessed area to place an adhesive backed Holley

Overview:

Holley is pleased to introduce their Muscle Series Small Block Chevy valve covers inspired by 1970's era GM factory L82/LT1/Z28 equipped engines. These valve covers are a continuation of Holley's Vintage Series valve cover line featuring a classic finned design and retro styling cues. Each set consists of one valve cover with a twist-in oil fill knockout (oil fill cap included) and one with a recessed area to place an adhesive backed Holley emblem (also included) or any round emblem of your choice.

Features:

  • Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
  • Die-Cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
  • Standard height valve cover with pre-installed internal oil baffles
  • Factory style twist-in oil fill cap, round Holley emblem, and square oil fill and PCV grommets included
  • Available in four finishes to best suit your custom build: natural, polished, gloss black, factory orange

Application:

Year Make Model Submodel Engine Size
1969 - 1986 Chevrolet C10 Suburban 350/5.7L V8
1969 - 1986 Chevrolet K10 Suburban 350/5.7L V8
1969 - 1986 Chevrolet K20 Suburban 350/5.7L V8
1969 - 1986 Chevrolet Caprice 350/5.7L V8
1969 - 1986 Chevrolet Corvette 350/5.7L V8
1969 - 1986 Chevrolet C20 Suburban 350/5.7L V8
1969 - 1985 Chevrolet Impala 350/5.7L V8
1967 - 1981 Chevrolet Camaro 350/5.7L V8
1975 - 1986 Chevrolet K5 Blazer 350/5.7L V8
1975 - 1986 Chevrolet C10 350/5.7L V8
1975 - 1986 Chevrolet C20 350/5.7L V8
1968 - 1979 Chevrolet El Camino 350/5.7L V8
1975 - 1986 Chevrolet K10 350/5.7L V8
1975 - 1986 Chevrolet K20 350/5.7L V8
1975 - 1986 Chevrolet C30 350/5.7L V8
1975 - 1986 Chevrolet G10 350/5.7L V8
1975 - 1986 Chevrolet G20 350/5.7L V8
1975 - 1986 Chevrolet G30 350/5.7L V8
1957 - 1967 Chevrolet Bel Air 283/4.6L V8
1976 - 1986 Chevrolet Camaro 305/5L V8
1976 - 1986 Chevrolet Monte Carlo 305/5L V8
1976 - 1986 Chevrolet El Camino 305/5L V8
1969 - 1979 Chevrolet Nova 350/5.7L V8
1958 - 1967 Chevrolet Biscayne 283/4.6L V8
1958 - 1967 Chevrolet Impala 283/4.6L V8
1977 - 1986 Chevrolet K5 Blazer 305/5L V8
1977 - 1986 Chevrolet C10 305/5L V8
1977 - 1986 Chevrolet C10 Suburban 305/5L V8
1977 - 1986 Chevrolet K10 305/5L V8
1977 - 1986 Chevrolet K10 Suburban 305/5L V8
1977 - 1986 Chevrolet K20 Suburban 305/5L V8
1977 - 1986 Chevrolet Caprice 305/5L V8
1977 - 1986 Chevrolet C20 305/5L V8
1977 - 1986 Chevrolet C20 Suburban 305/5L V8
1977 - 1986 Chevrolet G10 305/5L V8
1977 - 1986 Chevrolet K30 350/5.7L V8
1959 - 1967 Chevrolet El Camino 283/4.6L V8
1977 - 1985 Chevrolet Impala 305/5L V8
1977 - 1985 Chevrolet K20 305/5L V8
1973 - 1981 Chevrolet Malibu 350/5.7L V8
1960 - 1967 Chevrolet C10 Pickup 283/4.6L V8
1960 - 1967 Chevrolet C20 Pickup 283/4.6L V8
1960 - 1967 Chevrolet C30 Pickup 283/4.6L V8
1960 - 1967 Chevrolet K10 Pickup 283/4.6L V8
1960 - 1967 Chevrolet K20 Pickup 283/4.6L V8
1976 - 1983 Chevrolet Malibu 305/5L V8
1978 - 1985 Chevrolet G30 305/5L V8
1962 - 1969 Chevrolet Biscayne 327/5.3L V8
1962 - 1969 Chevrolet Impala 327/5.3L V8
1962 - 1969 Chevrolet Bel Air 327/5.3L V8
1970 - 1977 Chevrolet Monte Carlo 350/5.7L V8
1960 - 1966 Chevrolet Suburban 283/4.6L V8
1980 - 1986 Chevrolet G20 305/5L V8
1962 - 1968 Chevrolet Corvette 327/5.3L V8
1969 - 1975 Chevrolet Bel Air 350/5.7L V8
1970 - 1976 Chevrolet Monte Carlo 400/6.6L V8
1970 - 1976 Chevrolet El Camino 400/6.6L V8
1970 - 1976 Chevrolet Impala 400/6.6L V8
1970 - 1976 Chevrolet Caprice 400/6.6L V8
1968 - 1973 Chevrolet C10 Pickup 307/5L V8
1968 - 1973 Chevrolet El Camino 307/5L V8
1968 - 1973 Chevrolet G10 Van 307/5L V8
1968 - 1973 Chevrolet G20 Van 307/5L V8
1968 - 1973 Chevrolet Impala 307/5L V8
1968 - 1973 Chevrolet Caprice 307/5L V8
1968 - 1973 Chevrolet Chevelle 307/5L V8
1968 - 1973 Chevrolet K10 Pickup 307/5L V8
1968 - 1973 Chevrolet K10 Suburban 307/5L V8
1968 - 1973 Chevrolet K20 Pickup 307/5L V8
1968 - 1973 Chevrolet C10 Suburban 307/5L V8
1968 - 1973 Chevrolet K20 Suburban 307/5L V8
1968 - 1973 Chevrolet K30 Pickup 307/5L V8
1968 - 1973 Chevrolet C20 Pickup 307/5L V8
1968 - 1973 Chevrolet C20 Suburban 307/5L V8
1968 - 1973 Chevrolet C30 Pickup 307/5L V8
1964 - 1969 Chevrolet El Camino 327/5.3L V8
1964 - 1969 Chevrolet Impala 327/5.4L V8
1969 - 1974 Chevrolet Blazer 350/5.7L V8
1969 - 1974 Chevrolet C10 Pickup 350/5.7L V8
1968 - 1973 Chevrolet Chevelle 350/5.7L V8
1969 - 1974 Chevrolet K10 Pickup 350/5.7L V8
1969 - 1974 Chevrolet K20 Pickup 350/5.7L V8
1969 - 1974 Chevrolet K30 Pickup 350/5.7L V8
1969 - 1974 Chevrolet C20 Pickup 350/5.7L V8
1969 - 1974 Chevrolet C30 Pickup 350/5.7L V8
1970 - 1975 Chevrolet Bel Air 400/6.6L V8
1975 - 1980 Chevrolet K10 400/6.6L V8
1975 - 1980 Chevrolet K20 400/6.6L V8
1975 - 1980 Chevrolet K20 Suburban 400/6.6L V8
1975 - 1980 Chevrolet G20 400/6.6L V8
1975 - 1980 Chevrolet G30 400/6.6L V8
1957 - 1961 Chevrolet Nomad 283/4.6L V8
1963 - 1967 Chevrolet Chevy II 283/4.6L V8
1957 - 1961 Chevrolet Corvette 283/4.6L V8
1969 - 1973 Chevrolet Blazer 307/5L V8
1969 - 1973 Chevrolet Nova 307/5L V8
1969 - 1973 Chevrolet Camaro 307/5L V8
1964 - 1968 Chevrolet Chevelle 327/5.3L V8
1970 - 1974 Chevrolet G10 Van 350/5.7L V8
1970 - 1974 Chevrolet G20 Van 350/5.7L V8
1970 - 1974 Chevrolet G30 Van 350/5.7L V8
1975 - 1979 Chevrolet K5 Blazer 400/6.6L V8
1976 - 1980 Chevrolet C10 400/6.6L V8
1976 - 1980 Chevrolet C20 400/6.6L V8
1975 - 1979 Chevrolet K10 Suburban 400/6.6L V8
1976 - 1980 Chevrolet C20 Suburban 400/6.6L V8
1979 - 1982 Chevrolet Malibu 267/4.4L V8
1979 - 1982 Chevrolet Monte Carlo 267/4.4L V8
1979 - 1982 Chevrolet El Camino 267/4.4L V8
1957 - 1960 Chevrolet Truck 283/4.6L V8
1964 - 1967 Chevrolet Chevelle 283/4.6L V8
1958 - 1961 Chevrolet Brookwood 283/4.6L V8
1964 - 1967 Chevrolet Malibu 283/4.6L V8
1976 - 1979 Chevrolet Monza 305/5L V8
1976 - 1979 Chevrolet Nova 305/5L V8
1969 - 1972 Chevrolet Brookwood 307/5L V8
1969 - 1972 Chevrolet Kingswood 307/5L V8
1969 - 1972 Chevrolet Townsman 307/5L V8
1966 - 1969 Chevrolet C10 Pickup 327/5.3L V8
1965 - 1968 Chevrolet Chevy II 327/5.3L V8
1966 - 1969 Chevrolet Caprice 327/5.3L V8
1966 - 1969 Chevrolet K10 Pickup 327/5.3L V8
1966 - 1969 Chevrolet K20 Pickup 327/5.3L V8
1964 - 1967 Chevrolet Malibu 327/5.3L V8
1966 - 1969 Chevrolet C20 Pickup 327/5.3L V8
1966 - 1969 Chevrolet C30 Pickup 327/5.3L V8
1965 - 1968 Chevrolet Chevelle 327/5.4L V8
1965 - 1968 Chevrolet Chevy II 327/5.4L V8
1969 - 1972 Chevrolet Biscayne 350/5.7L V8
1969 - 1972 Chevrolet Brookwood 350/5.7L V8
1983 - 1986 Chevrolet P60 350/5.7L V8
1973 - 1976 Chevrolet Laguna 350/5.7L V8
1969 - 1972 Chevrolet Kingswood 350/5.7L V8
1969 - 1972 Chevrolet Townsman 350/5.7L V8
1977 - 1980 Chevrolet K30 400/6.6L V8
1973 - 1976 Chevrolet Laguna 400/6.6L V8
1973 - 1976 Chevrolet Malibu 400/6.6L V8
1970 - 1973 Chevrolet Chevelle 400/6.6L V8
1955 - 1957 Chevrolet One-Fifty Series 265/4.3L V8
1955 - 1957 Chevrolet Bel Air 265/4.3L V8
1955 - 1957 Chevrolet Two-Ten Series 265/4.3L V8
1955 - 1957 Chevrolet Nomad 265/4.3L V8
1955 - 1957 Chevrolet Sedan Delivery 265/4.3L V8
1955 - 1957 Chevrolet Truck 265/4.3L V8
1980 - 1982 Chevrolet Caprice 267/4.4L V8
1980 - 1982 Chevrolet Impala 267/4.4L V8
1959 - 1961 Chevrolet Kingswood 283/4.6L V8
1959 - 1961 Chevrolet Parkwood 283/4.6L V8
1967 - 1969 Chevrolet Camaro 302/4.9L V8
1956 - 1958 Chevrolet Sedan Delivery 322/5.3L V8
1956 - 1958 Chevrolet Truck 322/5.3L V8
1967 - 1969 Chevrolet C10 Suburban 327/5.3L V8
1967 - 1969 Chevrolet C20 Suburban 327/5.3L V8
1967 - 1969 Chevrolet K10 Suburban 327/5.3L V8
1967 - 1969 Chevrolet K20 Suburban 327/5.3L V8
1967 - 1969 Chevrolet Camaro 327/5.3L V8
1972 - 1974 Chevrolet P30 Van 350/5.7L V8
1970 - 1972 Chevrolet Biscayne 400/6.6L V8
1970 - 1972 Chevrolet Brookwood 400/6.6L V8
1970 - 1972 Chevrolet Kingswood 400/6.6L V8
1970 - 1972 Chevrolet Townsman 400/6.6L V8
1976 - 1978 Chevrolet C30 400/6.6L V8
1975 - 1976 Chevrolet Monza 262/4.3L V8
1980 - 1981 Chevrolet Camaro 267/4.4L V8
1957 - 1958 Chevrolet Sedan Delivery 283/4.6L V8
1966 - 1967 Chevrolet Caprice 283/4.6L V8
1957 - 1958 Chevrolet Del Ray 283/4.6L V8
1969 - 1970 Chevrolet Estate 307/5L V8
1955 - 1956 Chevrolet Sedan Delivery 324/5.3L V8
1955 - 1956 Chevrolet Truck 324/5.3L V8
1968 - 1969 Chevrolet K30 Pickup 327/5.3L V8
1968 - 1969 Chevrolet Biscayne 327/5.4L V8
1968 - 1969 Chevrolet Caprice 327/5.4L V8
1968 - 1969 Chevrolet Bel Air 327/5.4L V8
1968 - 1969 Chevrolet Camaro 327/5.4L V8
1969 - 1970 Chevrolet Estate 350/5.7L V8
1956 Chevrolet Corvette
1975 Chevrolet Nova 262/4.3L V8
1955 Chevrolet Corvette 265/4.3L V8
1957 Chevrolet Del Ray 265/4.3L V8
1981 Chevrolet Bel Air 267/4.4L V8
1957 Chevrolet One-Fifty Series 283/4.6L V8
1967 Chevrolet G20 Van 283/4.6L V8
1958 Chevrolet Yeoman 283/4.6L V8
1959 Chevrolet 3B 283/4.6L V8
1959 Chevrolet 3C 283/4.6L V8
1959 Chevrolet 3D 283/4.6L V8
1959 Chevrolet 3E 283/4.6L V8
1959 Chevrolet 3F 283/4.6L V8
1959 Chevrolet 3G 283/4.6L V8
1967 Chevrolet C10 Suburban 283/4.6L V8
1967 Chevrolet C20 Suburban 283/4.6L V8
1967 Chevrolet K10 Suburban 283/4.6L V8
1967 Chevrolet K20 Suburban 283/4.6L V8
1957 Chevrolet Two-Ten Series 283/4.6L V8
1967 Chevrolet K20 Panel 283/4.6L V8
1976 Chevrolet Laguna 305/5L V8
1981 Chevrolet Bel Air 305/5L V8
1978 Chevrolet C30 305/5L V8
1980 Chevrolet Corvette 305/5L V8
1968 Chevrolet Biscayne 307/5L V8
1968 Chevrolet Chevy II 307/5L V8
1968 Chevrolet Bel Air 307/5L V8
1973 Chevrolet Malibu 307/5L V8
1973 Chevrolet Laguna 307/5L V8
1959 Chevrolet Bel Air 322/5.3L V8
1969 Chevrolet Brookwood 327/5.3L V8
1969 Chevrolet Estate 327/5.3L V8
1969 Chevrolet Kingswood 327/5.3L V8
1966 Chevrolet Suburban 327/5.3L V8
1969 Chevrolet Townsman 327/5.3L V8
1968 Chevrolet C10 Pickup 327/5.4L V8
1968 Chevrolet El Camino 327/5.4L V8
1968 Chevrolet K10 Pickup 327/5.4L V8
1968 Chevrolet K10 Suburban 327/5.4L V8
1968 Chevrolet K20 Pickup 327/5.4L V8
1968 Chevrolet C10 Suburban 327/5.4L V8
1968 Chevrolet K20 Suburban 327/5.4L V8
1968 Chevrolet K30 Pickup 327/5.4L V8
1967 Chevrolet K20 Panel 327/5.4L V8
1968 Chevrolet Corvette 327/5.4L V8
1968 Chevrolet C20 Pickup 327/5.4L V8
1968 Chevrolet C30 Pickup 327/5.4L V8
1968 Chevrolet Chevy II 350/5.7L V8
1970 Chevrolet Estate 400/6.6L V8
1976 Chevrolet G10 400/6.6L V8

Specs:

Application Small Block Chevy
Baffle Included Yes
Bolt Pattern Perimeter
Brand Holley
Breather(s) Included No
Emission Code 3
Finish Polished
Gaskets Included No
Gromment(s) Included Yes - OEM style square with 3/4" PCV and breather tube hole
Internal Dimensions 2.45"
Logo Holley Badge
Material Cast Aluminum
Mounting Hardware Included No
Product Type Valve Covers
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: 23308478386

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4.3 ★★★★★
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Teresa
Grantham, US
★★★★★ 5
Outlet extender
I love this product. Work great behind my couch so i don't have to leave a gap between the wall and couch. Very sturdy, and stable. Holds plugs in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
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Jorge C.
Grantham, US
★★★★★ 5
Exelent choice no more hinging cables
I recently purchased the EZ Outlet Electrical Outlet Extender, and it has been a total game-changer for my home. I have a few outlets behind furniture and in tight corners that are almost impossible to use, and this product solved that problem instantly. The extender itself feels very sturdy and well-made. The most useful feature is the flexible, gooseneck-like arm that lets you bend the outlet away from the wall. This allowed me to easily plug in my lamp and a few other devices that were previously unreachable. I also love the extra ports. The two regular AC outlets, a USB-A port, and a USB-C port are incredibly convenient. It's great to be able to charge my phone and my laptop from the same spot without needing a separate charging block. The USB-C port is particularly fast, which is a huge bonus. Setup was as easy as plugging it in. There's no complicated wiring or anything to deal with. It's a simple, elegant solution that works exactly as advertised. If you have any hard-to-reach outlets in your home, I highly recommend this product. It's well worth the investment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2025
L
Verified Purchase
lapak
Boise, US
★★★★★ 4
Looks good, adjustability is super nice
This is attractive (for what it is) and is working well, I really like the adjustability - the only downside so far is that the USB ports are on the underside where I'm using it, so are basically unusable on a regular basis unless you want to leave a cable dangling from it, tho if you had it run up or to the right from the outlet, that wouldn't be a factor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
O
Verified Purchase
One Another Missions
San Leandro, US
★★★★★ 5
Its Quality
I absolutely love this! It’s a life changer for me as I’m always pulling the cord out from the wall in the attempt to stretch it. This now sits plug now sits perfectly between my bed and the wall. Excellent quality, easy to plug in and makes my life easier!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
M
Verified Purchase
MicDi
Houston, US
★★★★★ 5
Nice length and looks good
Bought two different types/brands of outlet extenders, overall I like this better out of the two when it comes to looks and functionality. This one you plug it in then rotate the outlet to the spot you need. One adhesive pad holds it in place easily due to light weight and trim materials. You can still plug something else in the wall outlet, this only takes up one of the outlets. It would be great if they added usb plugs to this like the other one.
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Reviewed in the United States on April 14, 2026

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