K&N High Performance Oil Filter 
 
K&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oils
A large filter media provides high-flow rates and outstanding oil filtration to keep your motor running clean and smooth
Uniform pleated synthetic filter media provides high capacity and outstanding filtration
Synthetic Media allows for the higher-flow rates associated with synthetic and synthetic blended oils
Protected by a heavy-duty canister and base plate, with a double-rolled seal
Pre-lubed base gasket
Check-valve/anti-drain back valve prevents drain-back and dry starts (where applicable)
17 mm hex nut (pre-drilled for safety wire security) allows easy-on, wrench-off removal
 
FITMENT: 99-17 Twin Cam / 17-25 Milwaukee 8
 
KN-171B OEM Replacement: 63798-99A
 
KN-171C OEM Replacement: 63731-99A