HiFloFiltro HF171B-4 Black Standard Premium Oil Filter 4-Pack

In this review the HiFloFiltro HF171B-4 is presented for riders and mechanics who want a durable, well-built replacement oil filter for Harley applications without paying premium brand prices. The bottom line: this 4-pack offers consistently high construction quality and a longer service life compared with many original equipment filters, making it a sensible choice for anyone who values longevity and reliable filtration. It is particularly attractive for owners performing routine maintenance who want clean oil, easy installation, and parts built from reputable global suppliers.

Key Features

• OEM fitment: Designed to replace Harley OEM part numbers 63798-99, 63731-99 and 63731-99A so buyers can expect direct fit and correct sealing.
• Extended service life: Factory testing indicates about 28% longer service life than many O.E. brands, reducing frequency of filter changes.
• High-grade materials: Uses steel from Toyota Tsusho and NKK Japan and filter media from Ahlstrom, Hollingsworth & Vose and Awa to deliver consistent structural integrity.
• Quality control: Each filter undergoes 16 individual quality checks and independent audits by TUV SUD, which supports consistent performance batch to batch.
• Well-specified assembly: Adhesives from Henkel Germany and globally sourced components mean fewer manufacturing weak points and reliable sealing under service conditions.

Who It's For

This 4-pack is best for motorcycle owners, home mechanics and small shops that service Harley models matching the listed OEM numbers and who prefer buying multiple filters at once to save time and ensure consistent parts on hand. It is also a good match for riders who prioritize filter longevity and robust manufacturing provenance when choosing consumables.

Riders who insist on a specific branded finish or collectors who want an exact cosmetic match to a particular chrome look may want to comparison shop, since appearance opinions are mixed among users. If a single replacement or an ultra-high-end race filter is required, this bulk 4-pack may be more than needed.

Pros & Cons

Pros

• Quality construction and global-sourced materials yield durable filters that resist collapse and maintain flow.
• Longer service life than many O.E. filters means fewer changes and lower running cost over time.
• Easy installation and correct fitment; the 5/8 nut on the end helps with removal using a standard socket.
• Independently audited manufacturing process offers reassurance about consistency and QC.

Cons

• Some buyers have mixed feelings about the chrome finish, so appearance may not match every preference.
• Bulk 4-pack may be more than needed for someone who only needs a single immediate replacement.

Specifications

Brand	HiFloFiltro
Model	HF171B-4 (4-Pack)
Replaces OEM	Harley 63798-99, 63731-99, 63731-99A
Quality control	16 individual checks; audited by TUV SUD
Materials	Steel from Toyota Tsusho/NKK; filter paper from Ahlstrom, Hollingsworth & Vose, Awa
Adhesive	Henkel Germany

Our Verdict

The HiFloFiltro HF171B-4 4-pack is a practical buy for Harley owners who want dependable filtration, longer service intervals and consistent build quality without a steep premium. It delivers value through durable materials, tested longevity and predictable fitment, making it a smart option for routine maintenance or stocking a small workshop.

Frequently Asked Questions

Will this filter fit my Harley?
If your bike uses OEM numbers 63798-99, 63731-99 or 63731-99A this filter is designed as a direct replacement and should fit and seal correctly.

How often should these be changed?
Manufacturer testing indicates a longer service life than many O.E. filters; follow your engine maker's oil change intervals but expect fewer changes compared with some original filters.

Are these filters easy to remove?
Yes; customers note easy installation and removal, and the 5/8 nut on the end accepts a standard socket for quicker service.