Overview. Bosch monovalves are no longer available new and tend to stick, leak, or operate intermittently. The BVX-3 and BVX-4 replace the original W126 valves with updated technology. Choose the version that matches the number of hose barbs on your current valve. BVX-4 fits vehicles with heated windshield; BVX-3 Fits early W126 and vehicles without heated windshield.
Features
- Vehicle-specific, drop-in replacement: mounts to the original brackets, hoses and electrical connector
- Reliable at high engine RPM and in extreme temperatures, where Bosch valves stick, leak, and malfunction
- Built with technology from late-model vehicles
Fitment
Fits W126 / C126 vehicles with Automatic Climate Control III. Verify by part number or visually before ordering: match the part number on your current valve to the cross-reference list below, and see the product image showing the top view of the valve mounted in the car, which shows how to tell the 3-barb and 4-barb versions apart.
Cross-reference part numbers (this valve replaces):
- BVX-3 (3-barb): Mercedes-Benz A 000 830 18 84, A0008301884, 0008301884, 000 830 18 84, 000 830 1884, 000-830-18-84, 000.830.18.84
- BVX-4 (4-barb): Mercedes-Benz A 000 830 37 84, A0008303784, 0008303784, 000 830 37 84, 000 830 3784, 000-830-37-84, 000.830.37.84
- Cross reference MBZ: Mercedes-Benz A 000 835 06 44, A0008350644, 0008350644, 000 835 06 44, 000 835 0644, 000-835-06-44, 000.835.06.44
- Cross reference Bosch: Bosch 1 147 213 007, 1147213007
What’s included
- BVX-3 (3-barb) or BVX-4 (4-barb) heater control valve
Good to know
- Warranty: 1 year from date of purchase
- Lead time: built to order, ships in 3–5 business days or less
- Compatibility: BVX Series compatibility sheet (PDF)
