Ultima High Performance Polished Oil Pump for 1992 & Later Harley Davidson Big Twin Models (98-517) - Improves Engine Lubrication & Longevity for Cruisers & Touring Bikes

Ultima High Volume Polished Oil Pump Fits 1992 & Later Harley Big Twin Models and Most Aftermarket Evolution Engines.

Checked on a Coordinate Measuring Machine

Flow tested on a test stand for consistancy

High Volume Pump has much greater capacity for pressure & volume

Feeds the bottom end at idle speeds

Keeps consistant flow throughout RPM range to keep from floating bottom end bearings