K&N KN-173C Motorcycle Oil Filter – High-Flow Synthetic-Blend, Wrench-Off Nut, Harley Compatible

Premium filtration for powersport engines

The K&N KN-173C premium oil filter is designed to support powerful rides and demanding service intervals. Its synthetic-blend filtration media targets contaminants while remaining compatible with synthetic, conventional, and blended oils, including high-concentration racing formulations. The heavy-duty canister adds rugged durability, and a 17mm welded hex nut enables quick, tool-assisted removal after a ride.

Every element of the KN-173C is crafted for reliability: the welded hex nut integrates with the rugged canister, and the synthetic-blend media balances filtration with high flow. This design aims to support typical service intervals and provide consistent performance under riding stresses.

Why riders choose KN-173C

• High-flow rates provide a steady oil supply to keep engines running smoothly even under heavy load.
• Synthetic-blend filtration media helps reduce harmful contaminants while preserving oil life.
• Lab-tested capacity and burst strength support confident maintenance scheduling.
• Versatile compatibility with synthetic, conventional, and blended oils offers flexibility for different setups.
• Easy to remove with a wrench-off design, saving time during quick service intervals.
• Heavy-duty construction stands up to demanding riding environments and long rides.
• Backed by K&N’s 1-Year Limited Warranty for added peace of mind.

Real-world use and maintenance

Riders report a straightforward installation process that fits seamlessly into routine oil changes. The KN-173C supports high-flow operation without sacrificing filtration quality, making it a practical choice for weekend warriors and long-haul riders alike. Expect reliable filtration during spirited highway runs and extended highway miles, with quick, predictable changes when schedules demand it.

Fitment and compatibility

This filter targets select Harley-Davidson motorcycles from the late 80s to the late 90s, including popular Dyna models. The design prioritizes straightforward service intervals and compatibility with a broad range of oils, helping riders tailor their setup to personal preferences and maintenance plans.

Warranty and assurance

All KN-173C filters are protected by a 1-Year Limited Warranty, underscoring K&N’s commitment to durable, reliable performance.