Bosch 1644711275 Diesel Exhaust Fluid DEF Pre-Heater Repair Kit

The Bosch 1644711275 Diesel Exhaust Fluid (DEF) Pre-Heater Repair Kit is a genuine OEM-quality replacement component for the Selective Catalytic Reduction (SCR) emissions system. This repair kit restores the DEF pre-heater, which is responsible for warming Diesel Exhaust Fluid to prevent freezing in cold weather and ensuring uninterrupted fluid delivery to the SCR system.

The SCR system depends on a properly functioning DEF heater to reduce harmful nitrogen oxide (NOx) emissions. A failed or degraded pre-heater can compromise emissions system performance and trigger fault codes. This Bosch repair kit provides the components needed to restore proper function without replacing the entire assembly.

Key Features:

• Genuine Bosch OEM-quality DEF pre-heater repair components
• Designed to restore SCR/AdBlue/Urea emissions system performance
• Prevents DEF freezing and maintains fluid delivery in cold weather conditions
• Supports proper Selective Catalytic Reduction (SCR) system operation for emissions compliance
• Direct-fit replacement engineered to OEM specifications

Cross-Reference Part Numbers: 164-471-12-75-64, 164 471 12 75 64, 1644711275, F01C600245