Genuine Walbro 450 or 525 LPH Fuel Pump with 4 PSI Hobbs Switch
The NOSTA S65 LPFP Upgrade Kit is engineered to provide the fuel volume required for
high-horsepower supercharged S65 applications while maintaining OEM-like drivability.
Utilizing a genuine Walbro high-flow fuel pump and a 4 PSI Hobbs switch, the secondary
fuel pump activates only under boost, reducing heat, electrical load, and unnecessary
pump wear during normal driving while supplying the additional fuel required under
high load.
Combined with the factory S65 fuel pump, this system delivers exceptional fuel capacity
for both street and track applications.
Fuel System Capacity*
Walbro 450 LPFP
91 Octane: Up to 850 WHP
93 Octane: Up to 900 WHP
E85: Up to 700 WHP
Walbro 525 LPFP
91 Octane: Up to 950 WHP
93 Octane: Up to 1,000 WHP
E85: Up to 800 WHP
Kit Features
Genuine Walbro 450 LPH or 525 LPH high-flow fuel pump
4 PSI boost-activated Hobbs switch
Complete plug-and-play wiring harness included
Custom CNC-machined fuel pump slider designed to sit level with the factory S65 fuel pump for proper fuel pickup and OE-style fitment
Includes a 1/8"-27 NPT tap and matching drill bit for Hobbs switch installation
No additional parts, hardware, or specialty tools required
OEM fuel pump retains factory operation during normal driving
Secondary fuel pump activates only under boost
OEM-like drivability with significantly increased fuel capacity
Compatible with ESS, VF Engineering, NOSTA, Active Autowerke, Gintani, and custom S65 supercharger systems
Designed for high-performance street, drag, and road course applications
Complete Installation Kit
Everything required for installation is included in the box. No additional wiring,
hardware, specialty tools, or fittings need to be sourced separately, making this a
true plug-and-play upgrade for your S65 supercharged fuel system.
*Horsepower capacities are approximate fuel system capabilities and assume proper injectors, fuel pressure, calibration, engine configuration, and fuel quality. Actual supported horsepower may vary depending on the complete vehicle setup.
Use collapsible tabs for more detailed information that will help customers make a purchasing decision.
Ex: Shipping and return policies, size guides, and other common questions.
