Save big on our HUGE inventory of SCR aftertreatment units and assemblies!
We have SCRs for Cummins, Detroit Diesel, Mercedes, and more. These OEM units are available for purchase in all 50 states.
Selective Catalytic Reduction is an aftertreatment system that reduces nitrogen oxide (NOx) emissions from diesel engines. The system injects diesel exhaust fluid (DEF) into the exhaust stream, which converts NOx into nitrogen and water. The SCR system uses a catalyst to facilitate the chemical reaction that converts NOx into harmless nitrogen and water.
The SCR (Selective Catalytic Reduction) is a vital part of the aftertreatment system that reduces harmful emissions and helps your truck meet emissions standards.
SCRs (20)
Mercedes Euro 5 SCR, A9304901314

Mercedes Euro 5 SCR, A9304901314
$3,000.00
Brand new OEM Mercedes "Oxidation Catalytic Converter Box" / SCR assembly A9304901314 Fits Euro 5 / 95L systems. Replaces the older part A930401514 There may or may not be some cosmetic blemishes from shipping but has been fully inspected. Performance will not be affected by any possible blemishes on these products. See attached photos. Electron...
Detroit SCR Module, A6804911719

Detroit SCR Module, A6804911719
$980.00
New Genuine Detroit Diesel SCR Module A6804911719 from complete assembly number A6804909056 There may or may not be some cosmetic blemishes from shipping but this has been fully inspected. Performance will not be affected by the possible blemishes on these products. This item must be shipped truck freight to a commercial address or the local te...
OEM Cummins SCR 5418483

OEM Cummins SCR 5418483
$3,985.26
This OEM CUMMINS 5418483 Outlet Catalyst Module (DOC) is brand new and has never been ran 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 dismantle them so that we can sell the pieces individually. D...
OEM Cummins SCR (5418482)

OEM Cummins SCR (5418482)
$3,863.47
This OEM CUMMINS 5418482 Outlet Catalyst Module (SCR) is a brand new "Take Off" unit and has never been ran. Uses REP Gasket G02010 and REP VB2023 (not included) Legal for sale and use in all 50 states including California. 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 ...
OEM Cummins SCR (5418487)

OEM Cummins SCR (5418487)
$3,800.00
This OEM CUMMINS 5418487 Outlet Catalyst Module (SCR) is a brand new "Take Off" unit and has never been ran. Replaces 4394726, 5418487, A055J705 Uses REP Gasket G02009 and REP V-Clamp VB2037 (not included) Legal for sale and use in all 50 states including California. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", th...
OEM Cummins SCR, 4328755 / A042P838

OEM Cummins SCR, 4328755 / A042P838
$1,505.94
This OEM Cummins SCR MODULE 4328755 / A042P838 is brand NEW and has never been installed. Cummins supersessions: 4328755, 4329376, 5505982, 5306895 Legal for sale and use in all 50 states including California. This item must be shipped truck freight to a commercial address or the local terminal, No residential addresses This product may or may...
OEM Cummins SCR 5418491

OEM Cummins SCR 5418491
$4,300.00
This OEM CUMMINS 5418491 / 4394942 Outlet Catalyst Module (DOC) / (SCR) is a brand new "Take Off" unit and has never been ran. Fits CUMMINS aftertreatment devices Cummins supersessions: 4394942 Legal for sale and use in all 50 states including California. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are bran...
OE Cummins DOC, 4377950

OE Cummins DOC, 4377950
$3,723.28
This OEM CUMMINS 4377950 / A051E632 Inlet Catalyst Module (DOC) is brand NEW and has never been installed. Legal for sale and use in all 50 states including California. 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...
OEM Cummins Outlet 4969529

OEM Cummins Outlet 4969529
$850.00
New OEM Cummins 4969529 Outlet Module (SCR) Works with ISC, ISL Cummins Emissions systems. New Surplus Inventory. 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 t...
OEM Cummins SCR (5505925)

OEM Cummins SCR (5505925)
$750.00
This OEM Cummins SCR MODULE 5505925 / 2880256 is brand NEW and has never been installed. Fits CUMMINS, 5505925, 2880256, 4354211 Legal for sale and use in all 50 states including California. This product may or may not have some cosmetic blemishes from shipping but has been fully inspected. The performance will not be affected by the possible bl...
OEM Cummins SCR 5312170

OEM Cummins SCR 5312170
$2,300.00
This OEM Cummins SCR MODULE 5312170 / A044H010 is brand NEW and has never been installed. Fits CUMMINS, 5312170, 4329387 Legal for sale and use in all 50 states including California. This product may or may not have some cosmetic blemishes from shipping but has been fully inspected. The performance will not be affected by the possible blemishes...
OEM Cummins SCR 2866521

OEM Cummins SCR 2866521
$2,200.00
This OEM 2866521 / 205229A SCR (Selective Catalyst Reduction) is brand new and has never been installed. Fits Cummins Aftertreatment systems. See attached photos. (Sensors and controls NOT included) They may or may not have some cosmetic blemishes from shipping. Performance will not be affected by the possible blemishes on these products. Lega...










