Chrome Offset H E I Air Cleaner Base 14 Inch For Small Block Chevy 283 327 350 383 400 Part Number MCC152sbc Chrome Steel , Triple Plated Copper / Nickel / Chrome Offset Air Cleaner Base Has a 5 1/8 Inch Air Cleaner Flange This H E I Offset Base Will Sit Approximately 1/8 Above Carburetor Flange This Offset Base Works On Chrome Aftermarket Air Cleaners Offset Base Allows You To Move Your Air Cleaner 1 1/8 Inches Forward for Small Block Chevy Engines With Large Cap Distributors.