K&N KN171B Oil Filter for Cars

K&N Oil Filters are designed for high-end synthetic motor oil, which is said to offer improved flow performance at cold temperatures while providing superior protection against thermal degradation. These filters are engineered for ultimate flow with less pressure drop, yet they are also engineered for outstanding filtration to meet or exceed all OEM specifications. Originally developed for demanding auto race applications, K&N's premium oil filters are rapidly becoming a favorite among consumers for their durability and easy removal.

These oil filters are covered by a limited warranty to be free from defects in materials and workmanship when installed and replaced using engine and equipment manufacturers' recommended service intervals. They feature a heavy-duty metal can with a 17mm nut affixed onto the end, which allows for easy installation and removal. The 17mm nut is cross-drilled, enabling racers to safely wire the filter to their bike.

The height of the K&N oil filter is 4.055 inches (103 mm), its weight is 0.8 lb (0.4 kg), and its outside diameter is 2.98 inches (76 mm). Where applicable, the anti-drainback valve eliminates dry starts and prevents oil from draining back into the crankcase during engine shutdown. The internally lubricated gasket provides a positive seal while allowing easy on and off of the filter, and the rolled threads provide extra protection against stripping.

Overall, K&N Oil Filters are built with heavy-duty construction, making them a reliable choice for high-performance and demanding applications. Their features, such as the easy-to-use 17mm nut and the anti-drainback valve, make them a popular choice among consumers who value quality and convenience.

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