GM CENTRAL PORT (Returnless) Assembly, 4.3L V-6, 2003-2010

Part number 12603371, 22106-6, Returnless, Central Port Injector Unit.

Complete Returnless Assembly. Precision factory remanufactured in the U.S.

Complete GM CPI assembly unit for 4.3L V-6 engines, 2003-2010

This unit is a true fit for the specified application years, and it includes a new OEM pressure damper and not a fuel pressure regulator.

Does not require return line (returnless).

All Units Include: - New pressure damper - New plastic tubes - New o-rings - Flow matched injectors

100% tested electronically and mechanically before shipping

100% lubricated system to assure proper functionality