DuraWRX ASP5410-6606718 DEF Header | 18 in | Analog | DT04-4P | 3/8 Return

New aftermarket DuraWRX diesel exhaust fluid (DEF) header, part number ASP5410-6606718, for tanks with an 18 inch header height and a 4.05 inch bore-seal tank interface. The complete header combines an analog level and temperature sensor on a single Deutsch DT04-4P connector, an engine coolant heater, and a 40 micron in-tank suction filter. It has 3/8 inch DEF suction and return fittings and replaces OE headers on Oshkosh, Pierce, McNeilus, Terex, and Holland Bus applications.

Key Features:

• Analog level and temperature sensing on one 4-pin Deutsch DT04-4P connector
• 3/8 inch DEF suction and return fittings
• Engine coolant heater with 5/8 inch hose-bead inlet and outlet
• 40 micron in-tank suction filter

Specifications:

• Part number: ASP5410-6606718
• Condition: New Aftermarket
• Component type: DEF header assembly
• DEF header height: 18 in
• Tank interface: 4.05 in diameter bore seal
• In-tank filter: 40 micron
• Sensor type: Analog, level and temperature
• Electrical connection: Deutsch DT04-4P
• Mating connector: Deutsch DT06-4S (not supplied)
• DEF suction fitting: 3/8 in, SAE J2044
• DEF return fitting: 3/8 in, SAE J2044
• Coolant inlet fitting: 5/8 in hose bead
• Coolant outlet fitting: 5/8 in hose bead
• Length below flange (reference): 17.38 in (441.55 mm)
• Fitting height above flange (reference): 1.90 in (48.13 mm)
• Body diameter (reference): 4.00 in (101.6 mm)

Wiring:

• Pin 1, yellow: level signal
• Pin 2, black: level ground
• Pin 3, red: temperature signal
• Pin 4, blue: temperature ground

Compatibility / Fitment:

Replaces 18 inch DEF headers on Oshkosh, Pierce, McNeilus, Terex, and Holland Bus applications. Select by the part number on your existing header, then confirm the connector and fitting checks below.

Hard fitment gate — connector and sensor output: This header has an analog sensor on a single 4-pin Deutsch DT04-4P connector, wired level on pins 1–2 and temperature on pins 3–4. Two groups of 18 inch lookalikes need checking:

• Digital headers with the same connector. DuraWRX's digital CAN-bus 18 inch headers use the same 4-pin connector family with CAN signals on pins 1–2. A matching plug does not confirm a match.
• Analog headers with different connectors. Other DuraWRX analog headers use two Deutsch DTM connectors or a Delphi connector.

Second gate — DEF return fitting: This header has a 3/8 inch DEF return fitting. DuraWRX's ASP5410-6506718 is also an 18 inch analog header with a single DT4 connector. Match your OE number and check the fitting size on your DEF return line before ordering.

Third gate — header height: This is the 18 inch header. DuraWRX builds headers in multiple heights, and they are not interchangeable.

Jumper harness for some OE numbers: Some OE head units this header replaces connect to the vehicle through a different plug. For those numbers, add the matching DuraWRX jumper harness, sold separately:

• ASPJH-FA01 (Delphi WPT-5): Gillig 83-01151-000
• ASPJH-FC01 (Deutsch DTM04-3P and DTM04-2P): American LaFrance 0410-000063-0020, Cummins A068H547, McNeilus 1604691, Oshkosh 4202057, Pierce 1454713 and 1454713OSH, Taylor Machine Works 800141300, Terex 903V0550

What is not included: mating connector, coolant hoses, DEF lines, and tank.

Common interchanges: 1454713, 1604691, 4202057, 903V0550, 5011806, 83-01151-000, 0410-000063-0020, A068H547, 1454713OSH, 800141300

Conclusion:

An 18 inch analog DuraWRX DEF header with a single Deutsch DT04-4P connector and 3/8 inch suction and return fittings, replacing OE headers on Oshkosh, Pierce, McNeilus, Terex, and Holland Bus applications. Confirm your connector wiring and return fitting size before ordering.