This stamped steel air cleaner drop base is built for use with the Sniper EFI 4BBL throttle body and a 14" diameter air cleaner element and lid. The 1" drop and clearance bulges accommodate the front-mounted fuel inlets on the Sniper EFI unit, freeing up extra under-hood clearance without modification.
Specifications:
- Application: Universal (Sniper EFI 4BBL throttle bodies)
- Base Style: 1" Drop
- Filter Diameter: 14" Round
- Finish: Black
- Material: Stamped Steel
- Part Number: 120-511
Compatible with Holley Vapor Guard -6 90° to 3/8" fittings (P/N 759166ERL). Not compatible with 4150-series Stealth Sniper systems.
FAQ
What is this drop base designed to fit?
It's designed for use with the Sniper EFI 4BBL throttle body and a 14" diameter air cleaner element and lid.
How much extra clearance does the 1" drop provide?
The base adds a 1" drop with clearance bulges to accommodate the front-mounted fuel inlets on the Sniper EFI unit, giving extra under-hood room.
Will this fit a 4150-series Stealth Sniper system?
No, this drop base is not compatible with 4150 series Stealth Sniper Systems.
What finish options are available?
This base is available in black; a chrome finish version is also offered separately.

