Horsepower Inc. HPI‑DPR‑1 Fuel Pressure Regulator – Delphi 62 PSI – Replaces Harley 27219‑95A / 27408‑01

OVERVIEW

The Horsepower Inc. HPI‑DPR‑1 Fuel Pressure Regulator serves as a direct‑fit replacement for Harley‑Davidson engine management systems, engineered to increase fuel delivery and maintain uniform injection pressure. Built as an advanced alternative to standard OEM components, this precision regulator supports reliable operation across highly loaded V‑Rod platform configurations and modern EFI applications.

ENGINEERING & PERFORMANCE

Stabilized at a fixed 62 PSI Delphi rating, the regulator eliminates pressure drop during sustained high-RPM throttle input, which keeps the fuel-air ratio within manufacturer tolerances. Its straight-swapping architecture aligns with factory mounting flanges and injector line ports, removing complex fabrication while preserving vibration-dampening isolation. The internal valve assembly reacts swiftly to sudden airflow spikes, preventing lean-condition hesitation and improving cold-start reliability on aging injectors.

KEY FEATURES

• Preset 62 PSI pressure rating optimized for factory and tuned injectors
• Direct-fit mounting replaces Harley‑Davidson OEM numbers 27219‑95A and 27408‑01
• Maintains steady fuel rail pressure under heavy acceleration and track conditions
• OEM-style connector and line geometry for plug-and-play service
• Reduces fuel starvation symptoms associated with worn factory regulators
• Made in the U.S.A. for controlled machining tolerances

TECHNICAL SPECIFICATIONS

• Brand: Horsepower Inc.
• Part Name: HPI‑DPR‑1 Fuel Pressure Regulator
• Part Type: Fuel Pressure Regulator
• Pressure Rating: 62 PSI (Delphi)
• Supported Years: 1998–2016
• Compatible Harley Trims: Touring, Softail, V‑Rod

FITMENT

• Harley Touring (1998–2007)
• Harley Softail (2001–2007)
• Harley V‑Rod (2002–2016)

WHY HARLEY RIDERS CHOOSE THIS

Elevated intake flow or aggressive cam profiles push stock regulators past their capacity, causing flat spots and limp-mode triggers. Riders select the HPI‑DPR‑1 because the Delphi-rated internal mechanism holds firm pressure when cylinder demand peaks, delivering smoother power delivery and eliminating lean diagnostic flags. The reinforced housing dissipates heat more effectively than faded OEM designs, extending service intervals between replacements. Because it follows the exact factory routing and bolt pattern, installation requires no custom brackets or line adapters, making it a trusted upgrade for daily riders and competition builders alike.