Cummins DEF Header | 5511564
Aftermarket DEF Header. No core required. Replaces OEM 5511564 and others. Built to OEM standards for durability and performance. Backed by a full manufacturer warranty.
Cummins DEF Header | 5511564
Upgrade your diesel emissions system with this premium aftermarket DEF header, designed to replace OEM Cummins part 5511564. Engineered for heavy-duty Cummins-equipped vehicles, it delivers precise DEF fluid level and temperature monitoring essential for reliable SCR performance and emissions control.
Crafted from durable, corrosion-resistant materials, this DEF header withstands extreme temperatures, DEF crystallization, and vibration—ideal for rugged fleet and commercial applications. Built to meet or exceed OEM standards, it ensures seamless fitment, sensor accuracy, and long-lasting reliability comparable to original equipment.
Featuring a plug-and-play design, the installation is fast and tool-free—no modifications required—minimizing vehicle downtime. Its no-core-required policy simplifies purchasing and eliminates return shipping hassles, saving you time and reducing costs.
Each unit is fully backed by American Radiator’s manufacturer warranty, ensuring confidence and value in your investment. Whether servicing a failed component or performing scheduled maintenance, this DEF header maintains emissions compliance and DEF system efficiency at a fraction of OEM prices.
Order today from American Radiator to keep your diesel systems clean, compliant
DEF Header Features:
Designed For:
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:
Please confirm your OEM or Aftermarket number matches before ordering.
4378049
5511564
ASP-908-2317-297
ASP9082317297
Shipping & Returns
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.
| Part Number | SKU | 257297 |
|---|---|
| OEM | Aftermarket Numbers | 5511564 4378049 ASP-908-2317-297 ASP9082317297 |