Genuine 0018301484 HVAC Heater Control Valve

Mercedes-Benz HVAC Heater Control Valve

This Genuine HVAC heater control valve, part number 0018301484, regulates coolant flow through the heater circuit to help maintain proper cabin temperature control. It is a direct-fit replacement for select Mercedes-Benz models, including S-Class and CL-Class applications.

Key Features

• Genuine HVAC heater control valve for Mercedes-Benz heating system service
• Part number 0018301484 for accurate ordering and fitment verification
• Compatible with electromagnetic and main heater applications where listed
• OE-style replacement for temperature control system repair
• Fits select Mercedes-Benz CL500, CL600, S320, S420, S500, S600, S350, 300SD, 300SE, 400SE, 400SEL, 500SEC, 500SEL, 600SEC, and 600SEL models

Detailed Description

Use this heater control valve to restore coolant routing through the HVAC heater circuit on compatible Mercedes-Benz vehicles. Part number 0018301484 is listed for 1992-1999 Mercedes-Benz applications, including 1998-1999 CL500 and CL600, 1994-1999 S320, S420, S500, and S600, plus earlier S-Class and coupe/sedan models such as 300SD, 300SE, 400SE, 400SEL, 500SEC, 500SEL, 600SEC, and 600SEL. If you are searching for a Mercedes-Benz S500 heater control valve or a Mercedes-Benz CL600 HVAC heater control valve, this part number is the reference to verify.

What It Helps Fix

• Cabin heat stuck on or stuck off
• Uneven temperature control from the HVAC system
• Coolant flow issues through the heater core circuit
• Loss of heater response on Mercedes-Benz S-Class and CL-Class vehicles
• Temperature regulation problems tied to a failing electromagnetic heater valve

Installation Notes and Tips

Confirm the vehicle year, model, and notes against the fitment list before ordering. This part is listed for both standard and electromagnetic applications on specific Mercedes-Benz models, so match the original valve type and connector style before installation. Inspect hoses, clamps, and surrounding cooling-system components during replacement to help avoid repeat HVAC issues.

Quality Assurance

Genuine replacement part 0018301484 is cataloged for direct fitment on the listed Mercedes-Benz applications and should be verified against the original part number before installation.