In stock
Only 1 left
Part Number | SKU
256924

Helical Heater | DEF Header | 5356924

Special Price $773.00 Regular Price $9,999.00

Aftermarket DEF header. No core required. Replaces OEM 5356924. Built to OEM standards for durability and performance. Backed by a manufacturer warranty.

Helical Heater | DEF Header | 5356924

Maximize the performance and reliability of your diesel emissions system with this high-quality aftermarket DEF header, engineered to replace OEM part 5356924. Built to exacting OEM standards, this header is designed to withstand the harsh environments of commercial diesel operations, ensuring accurate DEF level readings and long-term system integrity.

Crafted from durable, corrosion-resistant materials, this DEF header offers exceptional resistance to DEF crystallization, thermal cycling, and chemical wear. The no-core-required design eliminates the hassle of returns, making installation faster and more cost-efficient for fleet managers, technicians, and truck owners alike.

With a plug-and-play fit, installation requires no special tools or modifications, reducing downtime and getting your vehicle back on the road quickly. This replacement part supports optimal DEF delivery, helping maintain EPA emissions compliance, protect your SCR system, and promote efficient engine performance.

Backed by a comprehensive manufacturer warranty, this aftermarket DEF header offers peace of mind while delivering OEM-level quality at a fraction of the cost. Choose a proven solution trusted in demanding diesel applications. Order today and experience the performance and reliability your DEF system needs—without overpaying for OEM parts.

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:

CAT
Perkins Engine Company LTD

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: 18"
DEF Return Fitting: 5/16"
Coolant Outlet Fitting: 5/8"
Tank Interface: 4.05 Dia. Bore Seal
Electrical Connector: Deutsch DT4
Sensor Type: Digital
DEF Suction Fitting: 3/8"
Coolant Inlet Fitting: 5/8"
In-Tank Filter: 40 Micron

Please confirm your OEM or Aftermarket number matches before ordering.

5356924  
5913429  
T431006  
T434606  

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 256924
OEM | Aftermarket Numbers 5356924 5913429 T431006 T434606 ASP-918-1795-18 ASP918179518

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