14" Chrome Steel Off-Set Air Cleaner Base

• Off-set base clears HEI distributor caps other bases can't

• Chrome steel construction for a clean engine-bay finish

• Base only — pairs with a compatible top and filter for a full assembly

• Fits carburetors with a 5 1/8" neck diameter, 14" round size

Built for universal carbureted air-cleaner applications, this air-cleaner base helps position the filter assembly with the listed 5 1/8" flange and off-set base layout.

Airflow & Filtration Performance
The off-set base style places the filter raised 1/8" to help manage carburetor clearance, air-cleaner height, and installation layout.

Construction & Engine-Bay Finish
Steel base construction with a chrome finish supports stable air-cleaner mounting and clean engine-bay presentation.

Sizing & Installation Details
Neck flange is listed at 5 1/8". Air-cleaner size is 14". Shape is Round. Verify carburetor neck diameter, filter height, top fitment, and hood clearance before installation.

System Matching & Serviceability
Confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length before final assembly.This chrome steel off-set base is built for universal carbureted air-cleaner applications, specifically designed to clear HEI distributor caps — a common clearance issue on GM small block and big block engines running an HEI distributor. It fits carburetors with a 5 1/8" neck diameter in a 14" round size.

The off-set design raises the filter only 1/8" above the base, minimal compared to the 3/4" rise on TSP's flat-base equivalent — this lower profile is what provides the extra distributor cap clearance. It's built as a base-only component, so it requires a separately purchased compatible top and filter element to form a complete air-cleaner assembly. Steel construction with a chrome finish supports stable mounting and a clean engine-bay appearance.

If your engine uses an HEI distributor, confirm distributor cap height and position relative to the carburetor before choosing between this off-set base and a standard flat base. Also verify carburetor neck diameter, filter height, top fitment, and hood clearance, and confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length for final assembly.

Applications
Fits carburetors with a 5 1/8" neck diameter, 14" round base size; built for GM small block/big block engines equipped with an HEI distributor, and street performance or restoration builds needing distributor cap clearance.

Sizing
14" round diameter, off-set base style, 5 1/8" neck flange, filter raised 1/8" (versus 3/4" on TSP's flat-base equivalent). Base only — requires a separately purchased compatible top and filter element.

What's the purpose of an off-set air cleaner base?
An off-set air cleaner base is designed to help clear HEI distributor caps, which can interfere with a standard flat base on some engine combinations. This design raises the filter only ⅛ inch, compared to ¾ inch for TSP's flat-base version.

Do I need this base if I have an HEI distributor?
Not necessarily. Check the height and position of your HEI distributor cap relative to the carburetor before ordering. If a standard flat base already provides adequate clearance, an off-set base may not be necessary.

What carburetor neck size does this base fit?
This air cleaner base is designed for carburetors with a 5⅛-inch neck (air horn) diameter.

Does this include the top and filter, or just the base?
This listing is for the air cleaner base only. A compatible top and filter element must be purchased separately to complete the air cleaner assembly.

What's the difference between this and a flat base?
This off-set base raises the filter only ⅛ inch, compared to ¾ inch for a standard flat base, helping provide additional clearance around an HEI distributor cap while maintaining a lower overall profile.

Will this fit any 14" round air-cleaner top?
Not necessarily. Verify the top diameter, center stud, and sealing surface are compatible with your existing 14-inch round air cleaner top before ordering.