I. OE Replacement Part:

263HD, 412-585, 412-504, RTC263GHD2

24228407, 12584757, 12584759, 12585236, 12585238

12588104, 12588515, 12588521, 15005449, 15047934

15057934, 12575647, 24228416, 24228436, 24238187

24238193, 24238840, 24238846, 412455, 412504, 412585

412602, 412609, 12576351, 12576370, 12579582, 12579708

12579908, 12579915, 12581003, 12581010

II. Compatibility:

This is for the Electric Shift model.

Replacement for 2001-2007 GM Trucks with RPO code NP1. (32 spline input shaft)

Replacement for Chevy Silverado 2500 HD 2001-2006

Replacement for Chevy Silverado 2500 CLASSIC 2007

Replacement for Chevy Silverado 3500 HD 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

III. Specifications:

Input Shaft (Internal Spline): 32

Front Output: 32 (Internal Spline, one tooth missing)

Rear Output (External Spline): 32