K&N HP-4001 Performance Wrench-Off Oil Filter O/E replacement oil filters for most cars, trucks, SUV's, motorcycles, & ATV's Resin-impregnated filter media traps 99% of harmful contaminants 1 In. exposed nut designed for easy oil filter removal Heavy duty construction for extreme conditions Anti-drainback valve (where applicable) eliminates dry starts, prevents oil from draining back into crankcase during engine shutdown