Air filters for motors and engines; air intakes for motors and engines; air cleaner assemblies for motors and engines; pre-cleaner air filter assemblies; air cleaner/flame arrestor assemblies; air cleaner vent breather assemblies; replacement parts for air cleaner assemblies; intake airboxes for motors and engines; air cleaner to carburetor adaptors for motors and engines; carburetor velocity stacks; carburetor recalibration kits comprised of air filters; oil filters for motors and engines; fuel filters for motors and engines; fuel pumps for vehicles