Harddrive Billet Oil Pump - BIG Twin 1992-1999 EVO Only — Harley-Davidson (1992-2006)

Harddrive billet oil pump for Big Twin EVO engines 1992-1999, CNC machined from cast aluminum and polished to a high gloss finish. Splits bottom and top end oil supply to increase pressure to hydraulic lifters and top end, with surplus routed back to the main passage to avoid unnecessary filtering.

Features

• Cast aluminum CNC machined and polished to high gloss finish
• Splits bottom and top end oil supply for increased hydraulic lifter pressure
• Surplus oil routed to main supply passage, not return line
• Includes gaskets, drive shaft with keys and snap ring, check ball and pressure relief valve assemblies
• Optional oil supply fitting locations for custom routing

Specifications

• Brand: Harddrive
• Manufacturer Part #: 301497
• UPC: 191361129926
• Weight: 3.4484 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits Harley-Davidson Big Twin EVO engines 1992-1999 only. Cases manufactured 1970-1980 may require drilling for installation.

Frequently Asked Questions

Will this fit my pre-1992 EVO?

No — this pump is for 1992-1999 EVO Big Twin only. Earlier cases may require additional drilling.

What's included in the box?

Oil pump, gaskets, drive shaft with keys and snap ring, mounting hardware, check ball, and pressure relief valve assemblies.

Can I upgrade my older engine to the 81-up oiling system with this pump?

Yes — this pump offers that upgrade path by splitting bottom and top end oil supply for better hydraulic lifter pressure.

Do I need to modify my 1970-1980 cases for this pump?

Cases from 1970-1980 may require drilling for proper fit. Verify your specific case before installation.