Quantum HFP-PR11 Fuel Pressure Regulator Transparent
Transparent fuel pressure regulator for Yamaha YFZ450 models from 2009 to 2020
- Product colorTransparent
- Designed for Yamaha YFZ450 2017 models
- Fits Yamaha YFZ450R 2009-2020 variants
- Compatible with Yamaha YFZ450X 2009-2020
- Transparent housing allows visual fuel inspection
- Quantum brand engine tool for fuel regulation
Precision Fuel Regulation
The Quantum HFP-PR11 is a transparent fuel pressure regulator designed for Yamaha YFZ450 models from 2017 and YFZ450R or YFZ450X models spanning 2009 through 2020. It provides exact pressure control for high-performance off-road engines. Riders rebuilding or tuning these specific ATVs will find it a direct-fit component.
Thermals and Flow Stability
The transparent housing allows visual confirmation of fuel flow and internal condition without disassembly. Stable regulation prevents pressure spikes that can cause lean conditions or rich running under varying load. Consistent delivery supports reliable combustion across the rev range.
Build and Installation Notes
Transparent construction aids quick inspection for contamination or air bubbles during routine checks. Mounting aligns with the original fuel system layout on the listed Yamaha models. Buyers needing coverage for other displacements or model years should verify fitment before ordering.
How it compares
Measured against everything we stock in Engine Service & Diagnostic Tools, at today’s prices. Recalculated every night.
- Price $45.99
- Pricier than about 79% of the 1,113 comparable items (median $19.99).
Specifications
| Product | |
|---|---|
| Brand name | QUANTUM |
| Product color | Transparent |
Questions about this item
How do I install the Quantum HFP-PR11 regulator on my Yamaha YFZ450R 2009-2020, and what step is often missed?
Fit the regulator into the fuel rail, reconnect the supply and return lines, then pressurise the system to check for leaks; the step often missed is verifying the seal at both hose connections before reassembly.
What maintenance or replacement will the transparent Quantum HFP-PR11 need later?
Inspect the clear body periodically for cracks or discolouration, and replace the unit if the diaphragm leaks or pressure drifts outside specification.
What limit appears first on the Quantum HFP-PR11 during sustained high-RPM runs on a YFZ450X 2009-2020?
The diaphragm’s pressure-holding capacity is the first limit; extended wide-open-throttle use can cause pressure creep if the spring fatigues.
More in Engine Service & Diagnostic Tools
