1.) First, match the operating speed of your engine with the engine size using the chart below. The intersection of those two values will give you the bore size of the required ATB. For example, an 8 liter engine with an operating speed of 1500 RPM will require an ATB with a 55mm bore. Click to see the ATB selection matrix.
2.) Next, choose a number of desired features in the chart below. Not all combinations of features exist for each ATB. The suffix is used in the product number to define which feature(s) the associated unit has. For example, turbocharged applications typically require sealed and high temperature units. The feedback position sensor is used to send a 1 - 4 volt signal corresponding to throttle position for input to another controller or display.