Dorman - HD Solutions Engine Crankshaft Position Sensor P/N:904-7123CD
Dorman 904-7021 rear left crankshaft position sensor for the 2006 Crane Carrier Low Entry 6-cylinder 5.9L, 7.2L, 8.1L, 8.3L, 8.9L, 10.8L or 11.1L and other vehicles sends crankshaft position signals to the engine control unit. Also called a crank sensor, it gives the control unit the crankshaft data it works from.
A worn sensor can show up as hard starting, stalling or a check engine light. A damaged connector, a weak battery or a fuel or ignition fault can be behind those signs as well, so track down the cause before you buy a sensor.
Besides the Crane Carrier named above, the trucks it fits include the 2004-2006 Sterling Truck L9500 and the 2004-2006 Freightliner Columbia, and it is a direct-fit replacement for each of them. Open the "Vehicles it fits" section to check your exact model and engine.
Fit and size
Build and materials
One crankshaft position sensor for the rear left position, which takes one.
Interchange: 577.99528 · S-28439
2016615
This part cross-references / interchanges with the following part numbers:
Does the Dorman 904-7021 sensor fit the 2004-2006 Sterling Truck L9500?
Yes. Dorman 904-7021 is listed for the 2004-2006 Sterling Truck L9500 and for many other trucks. Open the "Vehicles it fits" section to match your exact engine.
How many sensors does the 2004-2006 Freightliner Columbia take?
This listing is one rear left sensor, and that position takes one on the 2004-2006 Freightliner Columbia.
What terminal type does this rear left crankshaft position sensor have?
It has a pin terminal. Dorman 904-7021 is made of plastic and metal.
My truck cranks but won't start; could the crankshaft position sensor be behind it?
Possibly, if a failed sensor is the cause, since it sends crankshaft position to the engine control unit. A shop can test the sensor and its circuit to confirm.
Is Dorman 904-7021 the same part as 577.99528?
Yes. 577.99528 is one of the numbers Dorman 904-7021 replaces, along with S-28439 and 2016615.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.