K&N Motorcycle Oil Filter: High Performance, Wrench Off Nut, KN-171C

K&N makes a great oil filter, and the KN-171C is no exception! The build quality is excellent, and you can tell it’s made with attention to detail. One of my favorite features is the built-in wrench-off nut, which makes removing the filter much easier without fighting with a traditional oil filter wrench. The chrome finish looks great on a Harley-Davidson, and the heavy-duty construction gives me confidence in its quality. It’s a nice combination of performance, convenience, and appearance. When it comes to maintaining my motorcycle, I prefer using quality parts rather than cutting corners. Overall, this is a well-designed oil filter that makes routine maintenance easier. K&N has earned its reputation for quality, and I’d definitely recommend this filter to other Harley owners!

Perfect fit for my 17' ultra limited, has the nut on the filter for easy removal and install. Chrome looks good and was a better value that any auto part store. The o-ring seal seems pretty flexible as well.

The K&N KN-171C Motorcycle Oil Filter is a fantastic upgrade. You can tell right away it’s built with quality in mind. It works perfectly with both synthetic and conventional oils, and I’ve had zero issues with performance. The wrench-off nut is a game changer—it makes installation and removal incredibly easy, especially compared to standard filters. No slipping or struggling, which saves time and hassle. Fitment was spot-on for my bike, and it feels secure and reliable once installed. K&N definitely delivers on durability and performance with this one. Overall, a high-quality oil filter that’s easy to use and built to last. Highly recommend!

I’ve been running these filters since 2006 on my Harley Davidson, motorcycles and later that year I start running on all my pick ups and cars as well. They did so well such a good quality filter. I look at as cheap Insurance to motor issues later… I hope they continue to make in the 🇺🇸 USA . I walked away from companies for betraying us to China… keep up the good work 😎

Very nice product

Works like designed.

Very nice Whitecap Hat...got it for grandson's KC Team. It is not a flat cheap hat. Would def. buy again. Go KC Whitecaps!!! John H.

Hard to say much about it except K&N filters are well-made and fit properly. I love the nut on the end to help get it off if needed. These are a quality part.

Correcte en snelle service

Bei Luftfiltern geht nichts über K&N. Super Qualität!

Au top super pratique pour changer les filtres

Great quality oil filters, I use them on all my different motorbikes. Having a, nut on the end means, no need for different oil filter removal tools

Not all oil filters are alike! The K&N oil filters are well built with very good internal filtering components. Easy to install as easy to remove. Step #1: remove the screw and completely drain the motor oil. Step #2: install the screw back in place with a new rubber O’Ring. It cost less than 0,25 cent for this most important piece that keeps the oil from leaking out of your motor. Oil filter installation process: life lesson - Step 1: a) lubricate the rubber seal with new oil; b) always fill the new oil filter with new oil until the oil filter is filled before installing it. This will ensure your motor to get immediately the oil it needs after an oil change. You will prevent your motor from the next start from internal damage to take place due insufficient oil flowing after the oil change. Step 2: clock wise, install the oil filter (manual hand process) to avoid damaging the filter threads and then use the 17 mm welded hex nut to tight the filter (turn between 1/2 ro 3/4 turn), no more. To remove the filter: Step 1 - use the 17 mm hex nut and unscrew the oil filter (counter-clockwise) and finish the removal in a manual hand process. My Harley Davidson, 2014 Ultra Limited remains in great condition! a 17mm welded hex nut can be used for quick and easy filter removal.