K&N Oil Filter - Chrome — Harley-Davidson Road King, Softail Fat Boy, Softail Heritage Classic (1989-2023)

K&N oil filter in chrome finish with synthetic pleated media designed for high-flow rates in synthetic and synthetic-blended oils. Heavy-duty construction with double-rolled seal and pressure relief valve keeps your motor running clean.

Features

• 17mm hex nut for easy spin-on, spin-off installation
• High-flow synthetic pleated media
• Double-rolled seal with high burst-strength
• Pressure relief valve and anti-drain back valve
• Pre-lubed base gasket for optimum seal
• TÜV production monitored and endorsed

Specifications

• Brand: K&N
• Manufacturer Part #: KN-171C
• UPC: 024844087232
• Dimensions: 3 in W × 3 in D × 4.25 in H
• Weight: 0.8 lbs
• Country of Origin: Thailand

Frequently Asked Questions

Is this filter compatible with synthetic oils?

Yes — the high-flow synthetic pleated media is specifically designed for synthetic and synthetic-blended oils.

What's included with the K&N Limited Warranty?

K&N backs this filter with their Limited Warranty. Check K&N's website for full coverage details and registration.

Does it have an anti-drain back valve?

Yes — an anti-drain back valve protects your engine on cold starts by preventing oil from draining out of the filter when the engine is off.

How do I install this filter?

The 17mm hex nut allows easy hand-tightening and wrench removal. The pre-lubed base gasket ensures a proper seal — hand-tighten until snug, then turn an additional 3/4 turn.