SKU: OTRAC10519
MPN: AC10519
The Air Cleaner Base 4412 w/HEI Offset from OTR FILTERS is a precision-engineered intake component designed for street and high-performance applications where compact engine bay layouts demand offset mounting solutions. This air cleaner base serves as the foundation of your intake system, positioning the filter element and carburetor interface with the offset geometry required for HEI (High Energy Ignition) distributor clearance. Whether you're building a classic muscle car, restoring a vintage cruiser, or upgrading a street rod, this component eliminates the fitment headaches that come with tight underhood packaging on popular platforms.
Engineered with precision tolerances, the Air Cleaner Base 4412 features an optimized offset design that clears modern HEI ignition systems without sacrificing intake flow efficiency or filter accessibility. The 15.3 by 3.7 by 15.4 inch footprint is carefully calculated to integrate seamlessly into modified engine compartments while maintaining proper air filtration surface area and carburetor mounting security. OTR FILTERS manufactures this component to exacting standards, ensuring consistent bore dimensions, gasket sealing surfaces, and structural rigidity across production runs. At just 2.3 pounds, the aluminum or composite construction balances durability with weight savings—critical considerations for performance-oriented builds where every pound matters.
Mechanics and engine builders tackling retrofits on small-block Chevrolet, Ford, and Mopar platforms benefit most from this offset base, particularly when upgrading to fuel injection or modernizing ignition architecture while retaining factory-adjacent engine bay packaging. Installation pairs the Air Cleaner Base 4412 w/HEI Offset with your choice of 4412-pattern filter elements and compatible carburetor adapters, ensuring both environmental sealing and reliable idle characteristics. Verify your distributor clearance and carburetor mounting bolt pattern against OTR FILTERS' fitment charts before purchase to confirm compatibility with your specific year, make, and engine modification package.
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