This Holley replacement billet aluminum oil fill cap fits Holley LS valve covers and valley covers equipped with an external oil fill, and includes an O-ring for sealing.
Specifications:
- Material: Aluminum
- Finish: Silver (Polished)
- Thread: 1-5/16 in.-12
- Includes: O-ring, Qty 1
- Compatibility: Holley LS valve covers 241-88, 241-89
- Part Number: 241-225
OE Camaro and Corvette accessory brackets may need clearance when installing Holley's cast 2-piece and tall LS valve covers and coils.
FAQ
What valve covers is this cap for?
Holley LS valve covers and valley covers with an external oil fill, specifically PN 241-88 and 241-89.
What's the thread size?
1-5/16 in.-12.
Does it include a sealing O-ring?
Yes, an O-ring is included.
What material is the cap made from?
Billet aluminum.

