Oil Filter Block Off Plate -12 Fitting

The Barnes Oil Filter Block Off Plate with -12 AN fitting is a precision aluminum adapter designed for custom engine builds where traditional oil filtration bypass is required. This bolt-on blockoff plate eliminates the factory oil filter housing while maintaining hydraulic capacity through a dedicated -12 AN male inlet port, making it essential for tight engine bay configurations, drag racing setups, and compact small block Chevy builds where space constraints demand alternative cooling or filtration strategies.

Constructed from aluminum and finished in black anodized coating, this adapter provides corrosion resistance and a clean aesthetic integration into high-performance engine compartments. The -12 AN male inlet allows seamless compatibility with standard braided hose and AN-threaded fittings commonly used in custom fuel, oil, and coolant systems. Weighing just 0.74 lbs, the compact 4 x 3.45 x 4.65-inch footprint enables installation in confined spaces where traditional filter canisters create fitment conflicts. The blockoff design is straightforward to install via bolt-on mounting to existing factory oil filter pad locations on small block Chevy engines.

This adapter serves builders working on fuel-injected performance builds, classic street rods, motorsport engines, and off-road platforms where engine bay real estate is at a premium. Street and track enthusiasts often pair blockoff plates with remote-mount oil coolers, sandwich adapters, or standalone filtration systems to gain critical clearance for intake manifolds, headers, supercharger installations, or engine bay modifications. The -12 AN inlet accepts standard motorsport-grade hoses and fittings, simplifying plumbing integration with existing custom systems.

Barnes block off plates are recognized within the small block Chevy tuning and hot rod community for straightforward bolt-on implementation. When selecting an oil filter adapter, verify small block Chevy engine pad compatibility and confirm your downstream oil system (cooler, filter sandwich, or catch tank) accepts -12 AN inlet connections to avoid unnecessary adapter complexity.