Standard Ignition Fuel Injection Pressure Regulator P/N:PR31

Hold fuel pressure steady at the injectors with the Standard Ignition Fuel Injection Pressure Regulator PR31. It installs as a direct-fit replacement for the 1986-1988 Mazda RX-7 (R2-1.3L) and the 1994-1997 Toyota Previa (L4-2.4L). A fuel injection pressure regulator maintains the pressure differential across the injectors by controlling return flow, so the injectors deliver a consistent, metered spray as engine load and vacuum change.

• Regulator function: maintains regulated fuel pressure, with a listed operating pressure of 38 psi.
• Sealing and contents: includes an O-ring and ships with a caution sheet; gas (petrol) system type.
• Angled nipple orientation for the intended routing.
• Validation testing: per the manufacturer, more than 200 hours of vibration testing plus over 1000 hours of extreme heat-and-cold and on-vehicle testing.
• Built from corrosion-resistant, durable materials to hold up under heat and prolonged use.

If a failed regulator is the cause of hard starting, rough idle, or poor fuel economy, this replaces it — diagnose the cause before replacing, as those symptoms can have other sources. Country of origin: Mexico.

Interchange: 21843 · PRDL143 · 2-1843 · N32613280 · 800-143 · 800143 · 2328076020
Manufacturer part number PR31