Sequential Multiport Fuel Injector – GM (19421333)

Sequential Multiport Fuel Injector converts a physical condition into a signal the powertrain module acts on. The module compares that signal against an expected range at every start-up, so a failing unit is usually logged before it becomes a driveability complaint.

Replace the Multiport Fuel Injector when the fault repeats with the harness already ruled out, when resistance drifts as the part heats up, or when a connector has corroded past cleaning. Swapping a sensor to chase a wiring fault is the most common wasted repair on these circuits.

For this Multiport Fuel Injector the reference is 19421333, in our Fuel Injectors range. Compare it with the number on the part you are replacing rather than with a photograph.

This is genuine GM stock, supplied for the Multiport Fuel Injector with the manufacturer number intact so the reference on the box matches the catalogue.