Reference OEM Number: 24228417, 12575648, 12576352, 12579909, 12581004, 12584758, 12585237, 12588516, 15005450, 15057935, 15772805, 24228411, 24238188, 24238841, 412456, 12573382, 412-540, NP263XHD, 263XHD, NP263, NP 263 XHD Replacement for CHEVY SILVERADO 2500 2001-2006, SILVERADO 2500 CLASSIC 2007 Replacement for CHEVY SILVERADO 3500 2001-2006, SILVERADO 3500 CLASSIC 2007 Replacement for GMC SIERRA 2500 2001-2006, SIERRA 2500 CLASSIC 2007, SIERRA 3500 2001-2006, SIERRA 3500 CLASSIC 2007 Newly manufactured product. Please make sure you need the 263 XHD not the 263 HD before ordering Please make sure you need the 263 XHD not the 263 HD!!!

1. Reference OEM Number:

24228417, 12575648, 12576352, 12579909, 12581004, 12584758
12585237, 12588516, 15005450, 15057935, 15772805, 24228411
24238188, 24238841, 412456, 12573382, 412-540, NP263XHD
263XHD, NP263, NP 263 XHD

2. Compatible Vehicle Models:

Replacement for CHEVY SILVERADO 2500 2001-2006
Replacement for CHEVY SILVERADO 2500 CLASSIC 2007
Replacement for CHEVY SILVERADO 3500 2001-2006
Replacement for CHEVY SILVERADO 3500 CLASSIC 2007
Replacement for GMC SIERRA 2500 HD 2001-2006
Replacement for GMC SIERRA 2500 CLASSIC 2007
Replacement for GMC SIERRA 3500 HD 2001-2006
Replacement for GMC SIERRA 3500 CLASSIC 2007

3. Specifications:

263XHD Transfer Case
29 Input Splines
31 Output Splines (Rear)
32 Output Splines (Front)
6.6 Diesel Duramax
8.1 Gas Engine
Bolts Up to Allison Transmissions and ZF6 Manuals

Newly manufactured product. Please make sure you need the 263 XHD not the 263 HD before ordering