Harddrive HD Oil Filters - Filter TC SYN BLK 171sb OE 63731-99a — Harley-Davidson (1999-2017)

Harddrive HD oil filter with full synthetic media designed for V-twin motorcycles. Uses M-Pleat construction and a louvered baffle to maximize filtration area and oil flow while resisting chemical breakdown longer than conventional paper elements.

Features

• Full synthetic media captures finer particles and resists chemical breakdown
• M-Pleat zigzag design increases filtration area and dust capacity
• Resin-reinforced media withstands pressure and heat without degradation
• Louvered baffle screen creates oil swirl for better media contact
• Pre-lubricated gasket wrapped in shrink film to prevent contamination
• Fluted design for easy hand or tool removal and installation

Specifications

• Brand: Harddrive
• Manufacturer Part #: PS171B-SM
• UPC: 191361260445
• Dimensions: 3.07 in W x 3.07 in D x 4.13 in H
• Weight: 0.78 lbs
• Country of Origin: Thailand

Fitment

Fits V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models. Cross-references OEM part 63731-99a.

Frequently Asked Questions

Is this filter compatible with my Harley or Indian?

Yes — this filter is designed for V-twin engines in Harley-Davidson and Indian Motorcycle models. Cross-references OEM part 63731-99a.

How long does the synthetic media last compared to paper filters?

Full synthetic media resists chemical breakdown and lasts longer without aging, extending service intervals compared to conventional paper elements.

Do I need tools to install this filter?

No — the fluted design allows hand removal and installation, though a filter wrench can be used if preferred.

Is the gasket already lubricated?

Yes — the gasket comes pre-lubricated and wrapped in shrink film to keep it clean until installation.

What does the louvered baffle screen do?

It holds the media in place and creates a swirl pattern that forces more oil across the filter surface for better dirt capture.