B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions PANTS 1040281 required for first time

1040281 required for first time replacement of Injectors for engines with a serial numbers less then 56462598

Country of Origin US Sold As Kit Availability Available Universal No Drive 2WD Max Tire 33

Flow matched

Forged Milled Wheels

3L (1100-1500hp) (TSPF15290F240G)

B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions PANTS 1040281 required for first timeThe B&M vacuum modulator is fully adjustable and allows you to fine tune your shift points and shift feel. This is done by turning the adjustment screw inside of the vacuum line connection for more or less diaphragm preload, thus raising or lowering part throttle shift points and line pressures. For GM TH350 and TH400 automatic transmissions.