Genuine 1235400450 Fuse Box

Mercedes-Benz Fuse Box for Heated Rear Window

This Genuine fuse box is a direct-fit electrical component for select Mercedes-Benz models, including 300E, 300SE, 300SEL, 420SEL, 560SEC, and 560SEL applications. Part number 1235400450 is used in vehicles equipped with heated rear window or pre-glow system configurations, depending on model and year.

Key Features

• Genuine OEM-style fuse box for Mercedes-Benz electrical systems
• Part number 1235400450
• Application-specific fitment for heated rear window and pre-glow system setups
• Compatible with select 1977-1993 Mercedes-Benz E-Class and S-Class models
• Supports restoration and repair of factory electrical distribution

Detailed Description

Use this fuse box when servicing the electrical distribution system on compatible Mercedes-Benz vehicles. It is listed for 1990-1993 Mercedes-Benz 300E, 1986-1992 Mercedes-Benz 300E with chassis note 124.030 and production range A292112 to A531968, and additional fitments across 300SE, 300SEL, 420SEL, 560SEC, 560SEL, 260E, 300D, 300SDL, 300TD, 300SD, 380SE, 500SEC, 500SEL, 380SEC, and 380SEL applications. The part number 1235400450 is also associated with heated rear window and pre-glow system configurations on select Mercedes-Benz diesel and gasoline models.

This part cross-references no listed aftermarket numbers in the provided data.

What It Helps Resolve

• Blown or damaged fuse box housing
• Intermittent power delivery to rear window defrost circuits
• Electrical faults in pre-glow system circuits on diesel models
• Corrosion or heat-related wear in the original fuse box
• Restoration of factory-style electrical routing on older Mercedes-Benz vehicles

Installation Notes and Tips

Verify the vehicle’s chassis number, engine configuration, and heated rear window or pre-glow system requirement before ordering. Compare the existing fuse box layout and connector arrangement to part number 1235400450. Installation should be performed with the battery disconnected and the electrical circuit inspected for corrosion, damaged terminals, or heat discoloration before the new unit is installed.

Quality Assurance

Genuine parts are built to match original equipment specifications for the listed Mercedes-Benz applications. Confirm fitment against the vehicle’s production data and electrical system configuration for accurate replacement.