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Holley LS Valley Cover with Oil Fill - Natural Billet

For GM LS2/LS3/LS7/LSX Applications, Trussed Design

Oil Fill Cap Included

PART# 241-360

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Holley's LS valley covers with oil fill provisions are the latest addition to our expansive lineup of LS engine dress up products. Machined from billet aluminum and featuring a modern, trussed design with an integrated oil fill neck and billet oil fill cap, these LS valley covers are the perfect upgrade for your LS engine if you are looking for a subtly custom touch. These valley covers are machined smooth on the underside, allowing for the elimination of Displacement-On-Demand (DOD), and instead features an ample gasket sealing surface and provisions for re-installing the oil pressure sensor if necessary. Each valley cover is custom machined for either LS1/LS6 (10 bolt) or LS2/LS3/LS7/LSX (11 bolt) patterns and Holley / Mr. Gasket offers all the necessary gaskets and upgraded hardware options to complete your installation. The new LS valley covers with oil fill provisions are available in three unique finishes: natural billet (clear anodized for protection), polished billet, and black anodized billet.


  • Precision manufactured from billet aluminum with a modern, race inspired, trussed design
  • Available for GM LS1/LS6 (10 bolt) and LS2/LS3/LS7/LSX (11 bolt) engine applications
  • Features integrated oil fill neck with included billet aluminum oil fill cap (Holley P/N 241-225)
  • Smooth underside allows for elimination of Displacement-On-Demand (DOD)* and offers ample gasket sealing surface
  • All necessary gaskets and upgraded mounting hardware sold separately
  • Available in three unique finishes: natural billet (clear anodized for protection), polished billet, and black anodized billet


Baffle IncludedNo
Bolt Pattern11
Emission Code4
Gaskets IncludedNo
LogoTrussed, No Logo
MaterialBillet Aluminum
Mounting Hardware IncludedNo
Oil Fill Cap IncludedYes
Product TypeValley Covers
WarrantyLimited 90 Day
Part Number241-360

Service Parts



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

If it is your intent to use the top mounted factory oil pressure sensor on LS2/LS3/LS7/LSX engines, you will need to carefully drill and tap the oil pressure sensor provision using the pre-located pilot hole on the bottom of the valley cover. The hole should be drilled and tapped to accept an M16 x 1.5 male NPT fitting. *If using for DOD Delete you must drill and tap all 8 oil port holes 1/8-NPT and install plugs in the oil ports or loss of oil pressure will occur.

Warranty Information

Limited 90 Day: See Details


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