Tial MVR 44mm Wastegate including the Inlet and Outlet Flanges and Clamps, air fittings, spring seat, specified spring and fasteners.

The MV-R is the replacement for the popular V44. Center lines and flanges are identical to the V44, making this a 100% replacement piece. MV-R is about an inch shorter than the V44 allowing for compact installs. It features water cooling ports (not required to run) for those heavy duty applications, three bottom pressure ports and two top ports for boost controllers like the AMS-1000.

This is a total replacement for the V44, production of the V44 has been discontinued

The MVR44 is the newest wastegate in Tial's Lineup and is the direct replacement for the now discontinued Tial V44 44mm Wastegate. It is the first wastegate in their lineup to feature water-cooling capability. There is a water inlet and outlet fitting that cyles a small amount of coolant through the actuator to keep the temperature under control in extreme applications like road racing. 

Wastegates are an essential part of any turbocharged powerplant. Controlling boost not only ensures that you are maintaining the correct pressures for the fuel you are running, but it also prevents overboost situations where the turbocharger is forced to spin faster than it would like. In these instances, you actually can loose horsepower, as the air is being super-heated by the compressor. 

This TiAL unit will handle boost control duties flawlessly when placed in a well designed system. This wastegate comes standard with TiAL's racing valve stem. The valve stem has a wear coating on it which is resistant to corrosive lead oxides that appear when running leaded racing fuels.