Skip to content
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.

8600553-2S Genuine Rosenbauer Cummins DEF Multifunction Head Unit

P/N: 8600553-2S Manufactured by: Rosenbauer Cummins
Original price $1,049.00 - Original price $1,049.00
Original price
$1,049.00
$1,049.00 - $1,049.00
Current price $1,049.00
1 in Stock
Condition: New
We accept:
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Not Sure Which Part Fits?Our support team is here to help.
+1 (828) 209-8010
Monday – Saturday | 8:00 AM – 8:00 PM (EST)
Fast 2–3 Day Shipping
30-Day Returns
In Stock & Ships Fast
Expert Support Available
2-Year Warranty

At Line Truck Parts LLC, we are committed to providing reliable automotive parts and a transparent customer experience. Eligible parts purchased directly from our website are covered by a 2-Year Limited Warranty, giving you added confidence in your purchase. Learn More

Product Overview

The 8600553-2S is a genuine Rosenbauer Cummins DEF multifunction head unit designed for compatible diesel exhaust fluid system applications. It combines DEF fluid routing, sensor connections, and electrical interfaces within the DEF tank assembly to support proper Selective Catalytic Reduction (SCR) emissions system operation.

Product Features

The 8600553-2S DEF multifunction head unit is manufactured to Rosenbauer Cummins specifications for DEF system management.

  • Routes DEF fluid through integrated tank header connections.
  • Supports DEF supply and return functions within the tank assembly.
  • Connects with vehicle systems through Delphi electrical interfaces.
  • Integrates DEF and coolant circuit connections for system operation.
  • Maintains proper fluid management within SCR emissions systems.
  • Assists reliable DEF delivery through factory system integration.

Technical Specifications

Condition New
Part Number 8600553-2S
Brand Rosenbauer Cummins
Part Type DEF Multifunction Head Unit
DEF Header Height 18
DEF Suction Fitting Dia 3/8 SAE J2044
DEF Return Fitting Dia 5/16 SAE J2044
Coolant Outlet Fitting Dia 5/8 Hose Bead
Electrical Connector Delphi WPT-4 and Delphi WPT-3
Weight 8.07 lbs


Installation Notes

The 8600553-2S should be installed after inspecting the DEF tank opening, sealing surface, fluid fittings, and Delphi electrical connectors for contamination, damage, or improper sealing conditions. After installation, verify DEF flow routing, confirm secure electrical connections, inspect all DEF and coolant connections for leaks, and check proper communication with the emissions system.

Always verify the part number, DEF tank configuration, header height, connector type, and SCR emissions system requirements before installation.