In stock
Only 1 left
Part Number | SKU
256922

Helical Heater | DEF Header | 5356922

Special Price $773.00 Regular Price $9,999.00

Aftermarket DEF Header. Replaces OEM part 5356922 and others. Built to OEM standards for quality and performance. Backed by a manufacturer warranty.

Helical Heater | DEF Header | 5356922

Upgrade your diesel emissions system with this premium aftermarket DEF header, engineered as a direct replacement for OEM part 5356922 and compatible models. Built to meet or exceed OEM standards, this DEF header delivers exceptional performance, durability, and precision fitment for a wide range of diesel applications. Crafted from high-quality, corrosion-resistant materials, it’s designed to endure harsh conditions, including extreme temperatures and continuous exposure to DEF fluid.

Installation is quick and hassle-free thanks to its plug-and-play design—no modifications or special tools required. This makes it the ideal solution for fleet operators, diesel technicians, and truck owners looking for a cost-effective, high-performance alternative to OEM parts. The unit ensures accurate DEF level sensing, helping maintain emissions compliance, protect your SCR system, and support efficient engine operation.

Backed by a reliable manufacturer warranty, this DEF header offers peace of mind and long-term value. Whether you're replacing a failed component or performing preventative maintenance, this aftermarket DEF header provides the trusted reliability your diesel system demands—without the OEM price tag. Enhance your vehicle’s emissions system today with a solution that delivers both performance and affordability.

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: 11"
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.

5356922
5913427
T432585
T434814

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 256922
OEM | Aftermarket Numbers 5356922 5913427 T432585 T434814 ASP-918-1795-11 ASP918179511

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