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Check out our growing selection of OEM Surplus aftertreatment parts - including wire harness, sensors, brackets, DEF dosers, and more!
These parts are like-new and priced to move.
OEM Surplus (82)
OEM CUMMINS NOX SENSOR (4326862)

OEM CUMMINS NOX SENSOR (4326862)
$400.00
New Surplus OEM Cummins NOx Sensor 4326862 Alternate Part Numbers: 2872945, 2897309, 4326470, A045S156 This is a brand new OEM Cummins NOx sensor. We purchase factory overruns so that we can sell them to you at a great price. If you need to replace your sensor and do not want to use aftermarket this is the part you need! Please note that ther...
OEM CUMMINS EGT SENSOR (5461626)

OEM CUMMINS EGT SENSOR (5461626)
$200.00
New Surplus OEM Cummins Exhaust Gas Temperature Sensor 5461626 Alternate Part Numbers: A057K401, 4326831

New OEM "Take-off" Cummins Particulate Matter Sensor (4384375 / 5461550)
$500.00
NEW OEM Cummins 4384375 / 5461550 PM/soot sensor. There is no core charge and this is not a reman unit. Alternate part numbers: 4383978, 4384375, 5461550, A054P722, A056N688 If this product is out of stock please see our aftermarket version: REP S74003 We also have the weld bung for this sensor, see our BG1029. This is not an aftermarket part, ...
OEM CUMMINS PRESSURE SENSOR (4383998)

OEM CUMMINS PRESSURE SENSOR (4383998)
$100.00
New Surplus OEM Cummins Differential Pressure Sensor 4383998, A052G379 This is an all sales final item, we will not accept returns for this part. There are multiple versions of this part that are different but look very similar. If you do not know your OEM part number please contact us with your VIN or ESN so that we can help you locate the corr...
New OEM "Take-off" Cummins Decomposition Reactor (SUR 5271588)

New OEM "Take-off" Cummins Decomposition Reactor (SUR 5271588)
$882.49
New OEM Cummins 5271588 Decomposition Reactor (Mixer Module) for DEF Injector. New Surplus Inventory. We also have the clamps and gaskets that are used on this unit, let us know if you need those as well. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail p...
NEW OEM "TAKE-OFF" CUMMINS BRACKET (5297312)

NEW OEM "TAKE-OFF" CUMMINS BRACKET (5297312)
$68.00
NEW OEM CUMMINS 5297312 / 5274686 mounting bracket. Aftertreatment Device electronics and sensors mount to this bracket. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail packaging. We buy complete units from Cummins and then break them down so that we ...
OEM CUMMINS DOSER INJECTOR 4377650 / 5506855

OEM CUMMINS DOSER INJECTOR 4377650 / 5506855
$700.00
NEW OEM CUMMINS DEF DOSER / INJECTOR 4377650 / 4354281 / 5578983 (kit) (A050S599) ALSO WORKS FOR 5506855 Per Cummins TSB 240215, the 5506855 doser injector is a direct replacement for the no longer available 4377650. The manifold is different, but there are no changes required. You may receive and updated version of this part, rest assured it is...

OEM Cummins Temperature Sensor (4384577 / 5654181)
$380.00
NEW OEM CUMMINS TEMPERATURE SENSOR 4384577 / 5654181 / A054U505 FITS OEM CUMMINS AFTERTREATMENT SYSTEMS ONLY.
OEM Cummins Particulate Sensor 4384582, 5461551

OEM Cummins Particulate Sensor 4384582, 5461551
$500.00
OEM CUMMINS PARTICULATE SENSOR 4384582 / 5461551 / A056N699 This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail packaging. We buy complete units from Cummins and then break them down so that we can sell the pieces individually. Due to this, there may be pain...
OEM CUMMINS WIRING HARNESS (4393920)

OEM CUMMINS WIRING HARNESS (4393920)
$425.00
GENUINE OEM CUMMINS "Take Off" WIRING HARNESS FOR AFTERTREATMENT SYSTEMS. 4393920 / A053Z499 Fits Cummins aftertreatment systems only. REPLACES : A053Z499 This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail packaging. We buy complete units from Cummins and ...

OEM CUMMINS SCR WIRING HARNESS (4387955)
$125.08
New OEM Cummins wiring harness (4387955) for the aftertreatment system only. Fits SCR # 4388456 Surplus Inventory
New OEM Cummins HD NOX Sensor (4326874)

New OEM Cummins HD NOX Sensor (4326874)
$425.00
NEW GENUINE OEM CUMMINS Take Off HD NOX SENSOR. Replaces Cummins 4326874 / 2872946, A045S171, 5WK96741B This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail packaging. We buy complete units from Cummins and then break them down so that we can sell the pieces ...