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This is a Pressure Regulator Plunger for Cummins 4B3.9, 6B5.9, B5.9, ISB3.9, ISB5.9G and QSB3.9 engines. This high quality aftermarket replacement part is guaranteed to meet OEM specifications and is shipped with a 12-month warranty.
Call us at 888.687.0539 with questions or buy online. As always, your satisfaction is guaranteed!
PLUNGER,PRS REGULATOR
Genuine Cummins Part
$52.02
RETURN LINE GASKET - C8.3-250 / B5.9M / QSB5.9 / 6B5.9 / B3.9 130 / C8.3GEN
$1.24
ROCKER LEVER - QSB5.9 (INTAKE)
$20.47
ROCKER LEVER - B SERIES (EXHAUST)
$24.61
LOWER ENGINE GASKET SET - 6B 5.9 / G5.9 / QSB 5.9
$180.04
