AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 165cc SBF Cylinder Heads. AFR`s 165cc "Street" heads are the preferred choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. Recommended for street, towing, or street/strip engines with displacements up to 351 cubic inches, operating up to 6000 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3 (Part numbers 14xx). Component upgrade and machining options are available to customize AFR Heads to your specific build.…