Bolt On Adapter Oil Filt

The PERMA-COOL Bolt On Adapter Oil Filter (model 1134) is a canister-to-spin-on oil filter adapter engineered for Small Block Chevy engine conversions and high-performance builds where space and cooling efficiency are critical. This aluminum adapter converts traditional canister-style filters to modern spin-on filter heads, offering a direct bolt-on installation with 1/4-inch bolts and a 13/16-16 inch center thread specification.

Constructed from aluminum, the adapter delivers a lightweight solution without sacrificing structural integrity—critical for applications where every pound matters. The natural finish resists corrosion in engine bay environments while maintaining straightforward installation. The verified 13/16-16 center thread matches OEM and aftermarket filter housings commonly found in modern spin-on conversions, ensuring compatibility across a range of Small Block Chevy platforms. The 1/4-inch bolt pattern accommodates standard fastener hardware found in most engine compartments.

Buyers upgrading older carbureted or fuel-injected Small Block builds to spin-on filter systems rely on quality adapters to simplify maintenance and reduce oil leak points. The compact footprint (4.2 x 2.45 x 6.1 inches, 0.59 lbs) allows installation in tight engine bays where traditional canister housings would interfere with headers, intake manifolds, or accessory brackets. This adapter is sold individually and is ideal for single-engine installations or replacement applications.

PERMA-COOL adapters are recognized in the performance and restoration community as practical OEM-alternative solutions that improve serviceability without requiring permanent modifications to engine blocks or oil galleries. The bolt-on design preserves the integrity of original cast housings while enabling the use of readily available spin-on filters—a major advantage for long-term reliability and parts availability.