B&M Shift Improver Kit - GM TH2004R Transmissions BD DIESEL " NX2 Nitro Series

NX2 Nitro Series

Replaces GM OE Part Number: AC Delco 89060639

and it's guaranteed to be an instant closet favorite for men or women

When restoring your classic squarebody there is a good chance that the hood has some substantial rust or has the dreaded kink

Use our kit lying flat or pull out the stands to get the optimal angle to the sun

B&M Shift Improver Kit - GM TH2004R Transmissions BD DIESEL " NX2 Nitro SeriesB&M Shift Improver Kit for 1981 1990 Chevrolet, Buick, Olds, Pontiac and GMC TH 200 4R transmissions, recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you've