In stock
Part Number | SKU
253005

Cummins | DEF Header | 04-31353-005

Special Price $655.00 Regular Price $9,999.00

Aftermarket DEF header. Replaces OEM 04-31353-005. No core needed. Built to OEM standards for durability and performance. Backed by full manufacturer warranty.

Cummins | DEF Header | 04-31353-005

Upgrade your diesel emissions system with this premium aftermarket DEF header, engineered to replace OEM 04-31353-005 and compatible part numbers. Designed for Cummins engines and heavy-duty diesel applications, this header ensures accurate DEF level sensing, system protection, and emissions compliance.

Manufactured with corrosion-resistant materials, it withstands harsh operating environments, including extreme temperatures and constant DEF exposure. Built to meet or exceed OEM standards, it delivers long-term performance, reliable data communication, and a secure fit with your existing DEF tank.

This DEF header features a no-core-required design, saving time and simplifying the replacement process—no return shipping or waiting. The plug-and-play installation means no modifications or special tools are necessary, minimizing vehicle downtime.

Ideal for fleet operators, service shops, and truck owners, this unit offers a cost-effective solution without compromising on quality. Whether you're performing a repair or preventative maintenance, it provides dependable operation and peace of mind.

Backed by a full manufacturer warranty, this aftermarket DEF header is the smart choice for professionals who demand performance and reliability. Order today to restore your DEF system with confidence and efficiency.

DEF Header Features:

Designed to meet or exceed OEM specifications
Aftermarket no core charge
2-year/40,000 miles/1200 hours manufacturer warranty (whichever comes first)

Designed For:

Freightliner Cummins Engine 13/23 Gallon DEF Tank

Manufacturer Warranty

DuraWRX provides a manufacturer's warranty on its DEF-related products for up to 2 years/40,000 miles/1,200 hours (whichever occurs first). This warranty covers any defects in materials or workmanship. To be eligible for a claim, the end user must register their product purchase on the DuraWRX site. To file a claim, customers must contact DuraWRX to receive a return shipping label. Once the product is returned and the claim is approved, DuraWRX will issue either a refund or a credit.

DEF Header Specs:

DEF Header Height: 20"
DEF Return Fitting: 3/8"
Coolant Outlet Fitting: VDA NW08 Nipple
Tank Interface: SAE J2587 Flange
Electrical Connector: Amp 1-1703818-1
Sensor Type: Digital
DEF Suction Fitting: 5/16"
Coolant Inlet Fitting: VDA NW08 Nipple
In-Tank Filter: 40 Micron

Please confirm your OEM or Aftermarket number matches before ordering.

04-31353-001  
0431353001  
04-31353-002  
0431353002  
04-31353-004  
0431353004  
04-31353-005  
0431353005  
ASPFL-2326  
ASPFL2326

Shipping & Returns

Famous Same-Day Shipping: In-stock items typically ship the same day when ordered by 3 PM CST Monday through Friday

Why Buy From American Radiator?

Trust American Radiator, your reliable source for quality cooling solutions since 2001. With roots in the industry dating back to the 1970s, our team brings decades of experience delivering high-performance radiators, charge air coolers, and DPF systems at competitive prices.

We work directly with trusted domestic and international manufacturers that supply OEM-grade components, ensuring every product meets or exceeds original equipment standards. Whether you need a heavy-duty truck radiator or a replacement for your DEF Header, we’re committed to providing durable, cost-effective solutions that perform.

Have questions? Contact our experienced inside sales team at 888-483-5763 for expert guidance and fast, friendly support.

More Information
Part Number | SKU 253005
OEM | Aftermarket Numbers 04-31353-001 0431353001 04-31353-002 0431353002 04-31353-004 0431353004 04-31353-005 0431353005 ASPFL-2326 ASPFL2326

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