Adequate fuel supply is essential once an RB26DETT begins producing more power than the factory system was designed to support. The Tomei Fuel Pump Assembly (part number TB503A-NS05A) is a high-flow in-tank unit developed specifically for the Nissan Skyline R32 GT-R (BNR32) with the RB26DETT engine, delivering a substantial increase in capacity over the original pump.
Rated at approximately 276 liters per hour, this pump provides significantly more flow than the stock unit (around 195 L/h), making it suitable for modified engines that require additional fuel to support higher boost, larger injectors, or increased horsepower targets. Tomei designed the assembly for direct fitment in the R32 GT-R fuel tank, offering a straightforward upgrade path while maintaining reliable operation and relatively quiet running characteristics. It is intended for both performance builds and as a more capable replacement when the original pump is no longer sufficient.
This fuel pump is a practical foundation piece for R32 GT-R owners moving beyond mild modifications. At Terra Firma Automotive, we supply this genuine Tomei Fuel Pump Assembly as a proven solution for RB26DETT fuel system upgrades. Whether the goal is supporting a turbo and injector package or simply ensuring consistent fuel delivery under higher demand, this pump delivers the additional capacity expected from Tomei. Choose Terra Firma Automotive for authentic Japanese fuel system components that help keep R32 GT-R builds properly supplied.
- Genuine Tomei Fuel Pump Assembly
- Part Number: TB503A-NS05A
- Application: Nissan RB26DETT
- Fitment: Skyline R32 GT-R (BNR32)
- Flow rate: approximately 276 L/h
- Significantly higher capacity than stock (~195 L/h)
- In-tank assembly design
- Direct-fit upgrade for R32 GT-R
- Supports higher horsepower and boost applications
- Suitable for modified fuel systems
- Relatively quiet and efficient operation
- Ideal foundation for performance fuel upgrades
- Trusted Japanese fuel system engineering
- Available from Terra Firma Automotive
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