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Engines and Components› Oiling Systems

4 Piston Racing

Ported D-Series Oil Pump

$454.99 $395.00 Save $59.99

SKU: 4PR-DPUMP

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The 4Piston Racing Ported D-series Oil Pump is an upgraded engine component designed to improve oil flow for high-RPM applications. Stock oil pumps can experience cavitation and pressure drops above 7,000 RPM, especially as temperatures rise. This ported pump increases flow by 25% and is designed for continuous use above 9,000 RPM. It is built using a new OEM Honda oil pump that is disassembled, has its oil passages ported and smoothed, then cleaned, oiled, reassembled, and repackaged.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand4 Piston Racing
Part Number4PR-DPUMP
CategoryEngines and Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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