Cummins 6 Bolt | DEF Header | 04-31354-000
Aftermarket DEF Header, new with no core charge. Replaces OEM 04-31354-000 and more. Built to OEM specs and backed by manufacturer warranty for reliable emissions system performance.
DEF Header | 04-31354-000
Ensure peak emissions performance with this premium aftermarket DEF header, a direct replacement for OEM part number 04-31354-000. Engineered to meet or exceed OEM standards, this brand-new unit requires no core return and is ideal for Freightliner applications using Cummins engines with a 6-gallon DEF tank.
Built to withstand harsh environments and corrosive DEF fluid, this DEF header ensures accurate fluid level and temperature monitoring—critical for proper Selective Catalytic Reduction (SCR) system function. Its OEM-style design allows for quick, plug-and-play installation with no modifications required, reducing downtime and service costs.
Whether you're maintaining a single truck or managing a full fleet, this header offers reliable performance, helping prevent fault codes, engine derates, and emissions compliance issues. Trusted by diesel techs and fleet operators, it delivers long-lasting durability under demanding conditions.
Backed by a manufacturer warranty and supported by fast shipping, this 04-31354-000 DEF header is a cost-effective alternative to OEM parts—without sacrificing quality or fitment.
Order now from American Radiator and restore your DEF system’s efficiency with confidence. Built for performance. Priced for value. Ready for the road.
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.
04-31354-000
0431354000
04-31354-001
0431354001
04-31354-002
0431354002
04-31354-003
0431354003
04-31354-004
0431354004
ASPFL-2324
ASPFL2324
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 | 254004 |
|---|---|
| OEM | Aftermarket Numbers | 04-31354-000 0431354000 04-31354-001 0431354001 04-31354-002 0431354002 04-31354-003 0431354003 04-31354-004 0431354004 ASPFL-2324 ASPFL2324 04-35649-002 0435649002 |