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Holley Air Cleaner Base 120-511

Holley Air Cleaner Base 120-511
Holley Air Cleaner Base 120-511Holley Air Cleaner Base 120-511Holley Air Cleaner Base 120-511Holley Air Cleaner Base 120-511Holley Air Cleaner Base 120-511
$29.99 ea
NEWARRIVING SOONEstimated Ship Date 10/29/2021 (If Ordered Today)16 available from HOLLEY PERFORMANCE PRODUCTS as of 10/16/2021
Model: 3958745
Supplier has not provided any fitment data for this product.
[More Info]
Complete your Sniper EFI install with our 1" drop base to gain some extra under-hood room and unleash the full potential of your new fuel injection system without modification! The Sniper EFI air cleaner drop base was designed specifically for use with the Sniper EFI 4BBL throttle body and a 14" air cleaner element and lid. These stamped steel drop bases feature a generous 1" drop with the necessary clearance bulges for use of the front mounted fuel inlets on the Sniper EFI unit. Available in both black and chrome finishes to best match your Sniper EFI unit.
  • 1 in. Drop Base w/Necess. Clearance
  • Compatible w/Holley Vapor Guard -6 90 Deg. To 3/8 in. Fittings
  • Designed For Use w/14 in. Dia. Air Cleaner Elements
  • Stamped Steel Construction For Improved Durability
Holley Performance Emission Code 3: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older U.S. manufactured California Certified vehicles/1967 and older U.S. manufactured Federally Certified vehicles/1967 and older Foreign manufactured vehicle. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition and 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. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle
Installation Notes:
Not compatible with 4150 series Stealth Sniper Systems.
About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!


Download Name File Size


Application Universal
Base Style Dropped 1 inch
Base Type 1.000 in. Drop
Diameter 14" Round
Diameter (in.) 14.000 in.
Emission Code 3
Filter Diameter 14"
Filter Height N/A
Filter Type N/A
Finish Black
Material Stamped Steel
Part Type Air Filter Housing Adapter


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Chevelle Depot 2021