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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.

3600821 Genuine Capacity DEF Header 40 Micron 18 Inch

P/N: 3600821 Manufactured by: Capacity
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
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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 3600821 is a genuine Capacity DEF Header designed for diesel exhaust fluid tank applications. This header assembly operates within the DEF system, supporting fluid pickup, monitoring, and circulation functions required for SCR aftertreatment operation.

Product Features

The 3600821 DEF Header is manufactured to Capacity factory specifications for DEF system service.

  • Supports diesel exhaust fluid tank operation
  • Integrates fluid pickup and monitoring functions
  • Uses 40 micron in-tank filtration
  • Designed for SCR aftertreatment systems
  • Supports DEF circulation within the tank assembly
  • Maintains factory DEF system compatibility

Technical Specifications

Condition New
Part Number 3600821
Brand Capacity
Part Type DEF Header
Filter Rating 40 Micron
Header Height 18 in


Installation Notes

The 3600821 DEF Header should be matched to the correct DEF tank configuration before installation. Inspect the tank seal, fluid connections, electrical interfaces, and internal pickup components during service.

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