OE Part Number:

261HD / 412-541 / RTC261GHD1
12581007
12576436, 12576437, 12579911, 12579912, 12579913
12581006, 12576435, 12581008, 12588518, 12588519
12588520, 15023640, 15039437, 15045471, 15046965
15046966, 15709254, 15709260, 15753788, 15753789
24228405, 24220410, 24220425

Input Shaft (Internal Spline): 32
Front Output: 32 (Internal Spline, one tooth missing)
Rear Output (External Spline): 32

Compatible Models

Fits 2001-2007 3/4 & 1 ton applications. This is for the FLOOR SHIFT model.

Replacement for GM Trucks with RPO code NP2 2001-2007. This is the manual shift unit for trucks with 6.0L engines. It has a 32 spline input shaft that mates with the 4L80 Transmission.

Replacement for Chevy Silverado 2500 HD 2001-2006
Replacement for Chevy Silverado 2500 HD Classic 2007
Replacement for Chevy Silverado 3500 Classic 2007
Replacement for GMC Sierra 2500 HD 2001-2006
Replacement for GMC Sierra 2500 HD Classic 2007
Replacement for GMC Sierra 3500 Classic 2007