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5508583RX Genuine Cummins DEF Doser Injector

P/N: 5508583RX Manufactured by: Cummins
$649.00 - $649.00
$649.00
$649.00 - $649.00
$649.00
1 in Stock
Condition: New
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Product Overview

The 5508583RX is a genuine Cummins DEF doser injector designed for compatible diesel exhaust fluid system applications including B6.7, L9, X12, and X15 engine platforms. It injects DEF into the exhaust aftertreatment system to support Selective Catalytic Reduction (SCR) operation by providing controlled fluid delivery for emissions system management.

Product Features

The 5508583RX DEF doser injector is manufactured to Cummins specifications for diesel exhaust fluid injection system operation.

  • Injects DEF into the exhaust aftertreatment system during operation.
  • Controls diesel exhaust fluid delivery for SCR system functions.
  • Supports DEF dosing requirements across compatible Cummins engines.
  • Integrates with factory emissions system components and connections.
  • Maintains controlled fluid flow during aftertreatment operation cycles.
  • Assists proper NOx reduction system performance through DEF injection.

General Specifications

Condition New
Part Number 5508583RX
Brand Cummins
Part Type DEF Doser Injector
Vehicle Applications B6.7 CM2350 B121B, B6.7 CM2450 B155B, L9 CM2450 L126B, X12 CM2450 X137B, X15 CM2450 X124B, X15 CM2450 X134B
System Diesel Exhaust Fluid System
Weight 3.0 Ibs


Installation Notes

The 5508583RX should be installed after inspecting the DEF injector mounting area, electrical connector, DEF supply connection, and exhaust dosing port for contamination or damage that could affect injection performance. After installation, verify proper DEF flow, confirm secure connector engagement, and check the aftertreatment system for correct operation using the required diagnostic procedures.

Always verify the part number, engine model, DEF system configuration, and aftertreatment application before installation.