Harddrive Hi Volume/Pressure Oil Pump - HI-VOL/Press M8 Models W/O OIL Seal — Harley-Davidson (2017-2026)

Harddrive hi-volume/pressure oil pump for Milwaukee-Eight engines, engineered to boost oil circulation and cooling on high-performance builds. Delivers 126% feed and 131% scavenge at 1000 RPM versus OEM specs, without the factory oil seal included.

Features

• 126% feed, 131% scavenge at 1000 RPM
• 123% feed, 146% scavenge at 2500 RPM
• Four mounting bolts included
• Oil seal sold separately (part #68-10305)

Specifications

• Brand: Harddrive
• Manufacturer Part #: 81080
• UPC: 191361165412
• Length: 5.11 in
• Width: 6.3 in
• Height: 3.94 in
• Weight: 2.09 lbs
• Country of Origin: China (Mainland)

Fitment

Fits Harley-Davidson Milwaukee-Eight (M8) engines without OEM oil seal.

Frequently Asked Questions

Do I need to buy an oil seal separately?

Yes. This pump does not include the factory oil seal. Order part #68-10305 (OEM #62400205) separately.

How much better is this than the stock M8 pump?

This pump flows 26% more feed and 31% more scavenge at 1000 RPM compared to OEM part #62400178 and #62400126.

What's included in the box?

The hi-volume/pressure pump and four mounting bolts. Gaskets, seals, and fittings are not included.

Is this a direct bolt-on replacement?

Yes, it uses the same mounting points as the factory M8 pump, but you must add the oil seal and any necessary gaskets during installation.