Our BVX-4 Heater Control Valve is a robust replacement for the Bosch Monovalve used in your W126 Mercedes sedan or limo with Automatic Climate Control III. This is a 4-hose barb model for vehicles with heated windshield. If your monovalve has 3 hose barbs, order our BVX-3 instead.
DROP-IN FIT. Mounts up to original brackets, hoses, and electrical connections.
BETTER-THAN-NEW PERFORMANCE. Faster climate control response time.
RELIABLE OPERATION. Reliable at high engine RPMs, and extreme temps.
LONGEVITY. Provides years of like-new performance with field-rebuildable internals.
PATENT-PENDING DESIGN. We take pride in delivering an elegant and advanced solution to upgrade your classic car.
ONE-YEAR WARRANTY. From date of purchase. Blue seal must be intact.
We recommend upgrading the Auxiliary Water Pump when upgrading / replacing the heater control valve.
