ISR Performance Fuel Pressure Regulator Adapter - Nissan SR20DET/KA/RB/CA

Our fuel pressure regulator adapter for popular Nissan four- and six-cylinder fuel rails. The clean way to mount an aftermarket FPR to your factory fuel rail without fabricating a custom bracket or relocating the regulator across the bay.

What It Does

Bolts directly to the factory SR, KA, RB, or CA fuel rail and gives you a proper mounting point for an aftermarket fuel pressure regulator. The adapter feeds an intermediate hose that runs from the FPR back to the adapter, so your regulator can live wherever the install routing makes the most sense. Designed for use with popular performance FPRs like the Nismo FPR Type B, Aeromotive Universal FPR, and our own ISR Performance FPR.

Fitment

Fits Nissan SR20DET, KA24DE, RB-series, and CA18DET fuel rails. Pairs with most aftermarket adjustable fuel pressure regulators that use a standard inlet fitting.

Product Details

Brand: ISR Performance

Part Number: IS-9537

Type: Fuel Pressure Regulator Adapter

Engine Fitment: Nissan SR20DET, KA24DE, RB-series, CA18DET

Mounting: Bolts directly to factory fuel rail

FPR Compatibility: Nismo FPR Type B, Aeromotive Universal FPR, ISR Performance FPR, and similar aftermarket regulators

Sold: Individually (FPR and intermediate hose sold separately)

Legality: Off-road and competition use only