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Proform 141-257 Die-Cast Slant-Edge Valve Cover Kit for GM Gen III/IV LS Engines w/Raised LSX Logo [Orange]

778-141-257K1


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141-257 Die-Cast Slant-Edge Valve Cover Kit for GM Gen III/IV LS Engines w/Raised LSX Logo [Orange]
$570.89
Valve Cover Kit GM LS V-8
  • Diecast Aluminum
  • Orange Finish
  • Raised LSX Logo
    Includes:
  • GM LSX V-8 Valve Covers
  • LS3/LS7 Coil Relocation Brackets
  • MSD 8.5mm Red Super Conductor Plug Wire Set
  • Free Shipping - Estimated to ship direct from manufacturer on 04/08/25 , pending manufacturer availability. Learn More
    QTY
    • Details
    • Proform GM LSX V-8 Valve Covers - 778-141-257
    • Proform Coil Relocation Brackets - 778-69521
    • MSD 8.5mm Super Conductor Spark Plug Wires - 121-39849

      Attention LSX-DR cylinder head owners: These valve covers will fit LSX-DR heads and clear the shaft mounted valvetrain. The mounting bolts included with these LS covers are not compatible with the LSX-DR cylinder heads. LSX-DR owners will need to purchase a LSX-DR mounting bolt kit, Proform part #778-66330.

      Internal Clearance Note: The following rocker configurations will require the valve cover to be slightly modified: Jesel part numbers: 549-KSS-317070, 549-KSS-317575, and 549-KSS-318080.

      Additional Notes:
    • Passenger side has oil filler holes
    • Gaskets Not Included. Recommend Valve Cover Gasket: 555-210870
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  • Specifications:

    Part Type
    Assembled
    Yes
    Baffled
    Yes
    Boot Type
    OEM
    Coil Wire Included
    No
    Color
    Red
    Conductor Style
    Spiral core
    Diameter (mm)
    8.5
    Distributor Boot Color
    Gray
    Distributor Boot Material
    Silicone
    Distributor Terminal Ends
    Stock
    Gaskets Included
    No
    Mounting Hardware Included
    Yes
    Part Category
    Performance Parts
    Part Fitment
    Semi Universal
    Position
    N/A
    Quantity
    Sold as a set
    RFI Suppression
    Yes
    Spark Plug Boot Color
    Gray
    Spark Plug Boot Ends
    Eight multi-angle
    Spark Plug Boot Material
    Silicone
    Valve Cover Height
    Tall
    Valve Cover Material
    Cast aluminum
    Valve Cover Mounting Style
    Centerbolt
    Wire Color
    Red

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