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.

1009212-003 Genuine E-One DEF Multifunction Head Unit

P/N: 1009212-003 Manufactured by: E-One
Original price $1,099.00 - Original price $1,099.00
Original price
$1,099.00
$1,099.00 - $1,099.00
Current price $1,099.00
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 1009212-003 is a genuine E-One DEF Multifunction Head Unit designed for diesel exhaust fluid tank applications. This DEF multifunction head unit operates within the emissions system and manages DEF fluid level monitoring, fluid quality sensing, temperature sensing, and fluid transfer functions through a digital CANbus interface.Β 

Product Features

The 1009212-003 DEF Multifunction Head Unit is manufactured to E-One factory specifications for DEF tank monitoring and fluid management.

  • Configured with an 18-inch DEF header height.
  • Features a Deutsch DT4 standard electrical connector.
  • Utilizes a digital CANbus sensor communication interface.
  • Includes a 3/8 SAE J2044 DEF suction fitting connection.
  • Equipped with a 5/16 SAE J2044 DEF return fitting connection.
  • Uses a 4.05-inch diameter bore seal tank interface.

Technical Specifications

Condition New
Part Number 1009212-003
Brand E-One
Part Type DEF Multifunction Head Unit
In-Tank Filter 40Β΅
Harness Length 15.5 in
Installation Depth 17.37 in


Installation Notes

The 1009212-003 DEF Multifunction Head Unit should be installed using the specified DEF, coolant, and electrical connections provided by the original equipment assembly. Inspect the tank sealing surface, fluid fittings, and electrical connector before installation to ensure proper fitment and system communication.

Verify part number, VIN, engine configuration, production date, emissions package, and applicable factory options before installation.