Spectra EM1303DFHS Diesel Exhaust Fluid (DEF) Hose

Heated DEF Hose for Ram Diesel Applications

The Spectra EM1303DFHS is a heated diesel exhaust fluid hose for select Ram heavy-duty diesel trucks. It is built to keep DEF moving from the pump to the injector during cold-weather operation, helping maintain emissions system performance on 2013-2018 Ram 2500 and Ram 3500 models.

• Heated DEF injector hose for diesel exhaust fluid transfer
• Helps prevent DEF freeze-up during normal vehicle operation
• Supports proper DEF delivery to the injector
• OE-referenced fitment for select Ram 2500 and Ram 3500 trucks
• Validated by Spectra Premium engineering for OE requirements
• Part number: EM1303DFHS

Detailed Product Information

Designed for emission control service, this Spectra diesel exhaust fluid hose is intended for Ram diesel trucks that rely on heated DEF plumbing to keep the system functioning in low temperatures. When DEF freezes in the line, the vehicle can trigger a check engine light and reduce operating speed; this hose helps maintain fluid flow so the injector can receive DEF as expected. The EM1303DFHS is a direct-fit style replacement for applications that use OE cross-reference numbers 68085921AA, 68085921AB, and 68085921AC.

Compatible With 2013-2018 Ram 2500 and 2013-2018 Ram 3500 diesel applications. Part number EM1303DFHS is a practical choice for owners and technicians servicing DEF system faults on Ram 2500 and Ram 3500 trucks.

What It Helps Address

• DEF line freeze-up in cold weather
• Check engine light caused by DEF delivery issues
• Reduced vehicle speed from emissions system derate conditions
• Restricted DEF transfer from pump to injector
• Failed or damaged heated DEF hose replacement needs

Installation Notes and Tips

Verify the OE part number and vehicle application before installation. Inspect the DEF line routing, connectors, and surrounding emission components for damage or contamination before replacing the hose. After installation, confirm the system is sealed and that the heated DEF circuit operates correctly.

Quality Assurance

Spectra Premium validates these injector hoses with in-house Canadian engineering review to meet OE requirements for the listed Ram diesel applications. Part number EM1303DFHS is engineered for emission-system service on the specified trucks.