Fuel pressure regulator valve for all 94+ trucks using the DS4 electronic injection pump. Includes all C/K trucks, Suburbans, Tahoe's Yukon's, Van's, School buses and Hummer H1's.

On the DS4 pump the regulator is built inside the return line fitting. It maintains the required 3-5 psi fuel pressure. It also acts as a check valve to prevent the reverse flow of fuel to the tank while the engine if off.

If your fuel pressure is low, it may be a bad regulator valve. Symptoms of low pressure are stalling, hard starting, and a hesitation or stumble on acceleration.

To check your pressure use our test gauge ssd-242 or permanently mount our ssd-215 gauge kit.

Installs in minutes with basic hand tools.