Overview
HFP-394-URT is a premium OEM replacement in-tank electric fuel pump rebuild kit engineered to fully restore electronic fuel injection (EFI) performance and line pressure to modern Honda motocross race bikes. Serving as a direct internal component overhaul for factory part numbers 16700-MKE-AF3 and 16700-MKE-AF1, this kit refreshes the high-wear delivery components inside the original fuel cell module assembly. It features exact cataloging fitment across competition four-stroke race platforms spanning model years 2021 through 2026, including the CRF250R and CRF450R series. It systematically resolves critical fuel starvation issues caused by worn electric motors, clogged intake strainers, leaking regulators, or degraded base gaskets, such as hard kicking/cranking, mid-range engine bogging out of corners, lean flame-outs under sudden throttle, rough idling, and high-RPM fuel pressure drops under race pace.
High-output 250cc and 450cc motocross engines demand precise, uninhibited fuel delivery to maintain crisp throttle response over high-rpm runs. Extreme track environments subject the fuel tank to high engine heat-soak, intense landing vibrations, and fine roost dirt intrusion. Over time, moisture condensation and race fuel additives overwork the original electric pump core, while clogged filter media restricts fuel flow to precision injectors.
HFP-394-URT addresses these performance failures by renewing all major internal fluid wear items simultaneously. The kit pairs a quiet, cool-running fuel pump core with a factory-calibrated fuel pressure regulator to maintain constant line pressure. A fine-mesh suction fuel strainer traps tank silt before it enters the pump cavity, while the structural baseplate fuel tank seal stops liquid weeping. All sealing elements are molded from a high-performance synthetic rubber compound. This advanced elastomer maintains its shape and compression holding strength without swelling, checking, or weeping when continuously submerged in modern pump gas, race gas, and fuel additives.
Features & Benefits:
- All-In-One Fuel Delivery Renewal: Concurrently replaces the electric pump core, fuel pressure regulator, pickup strainer, and base flange seal to stop pressure drop-offs and lean conditions.
- Calibrated Line Pressure Control: Restores factory-exact fuel rail operating pressure to eliminate mid-range flat spots, hesitation, and engine flame-outs.
- High-Performance Synthetic Rubber: Supplied structural baseplate seal is molded from premium industrial-grade FKM to resist modern ethanol breakdown and chemical swelling.
- FAdvanced Turbine Impeller Core: Engineered for quiet operation and low electrical current draw, minimizing internal heat-soak inside the fuel tank.
- First-Line Suction Protection: High-efficiency pickup strainer blocks fine dirt, rust scale, and tank scale before it reaches precision injector nozzles.
- Preserves Original Module Geometry: Dimensioned to slide straight into your factory plastic internal hanger basket, ensuring the original mounting assembly functions perfectly.
THE IDEAL REPLACEMENT FOR OEM #: 16700-MKE-AF3, 16700-MKE-AF1
Package Includes: Fuel Pump, Fuel Pressure Regulator, Fuel Strainer, Fuel Tank Seal
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
