S&S DBV4 Single Stage Relief Valve, Internal Return, 2700 Bar | LLY, LBZ, LMM
Part#:
Description
An S&S DBV4 single stage relief valve with internal return, set at 2700 bar. It is the internal return style used on the LLY, LBZ and LMM Duramax rail and the 6.7 style rail.
- Style: DBV4, single stage, internal return. LLY, LBZ, LMM and 6.7 style.
- Set point: 2700 bar.
- Part number: PRV-I-2700-1S
- Questions on fitment? Call our shop at 865 640 2097 and talk to a tech who works on these trucks every day.
What It Does
The relief valve sits in the fuel rail and opens if rail pressure climbs past its set point. When a valve wears out it starts bleeding fuel to the return below that point. The truck shows it as low rail pressure under load, a hard start, or a rail pressure code.
A higher set point is for a truck tuned to run more rail pressure than stock. The valve stays shut where a stock valve would open and dump pressure. Match the valve to the peak rail pressure your tuner is commanding.
Sizing injectors and a pump together? See our S&S Fuel System Planner for injector and CP3 sizing by horsepower.
Photo is a representative image. The part you receive matches the part number above.
