New Process NP261XHD NP263XHD transfer case UPGRADED rear housing
NEW PROCESS
 NP261XHD / NP263XHDÂ
UPGRADED ALUMINUM CONSTRUCTION DESIGN
 Part # 25900
Fits GM 2500/3500 model trucks with
Allison Transmission and NP261/263XHD units
Â
We will be closed APRIL 15-20 2026. All orders placed during this time will ship the week of April 21-24 2026. No orders will be canceled or refunded while we are closed.
NEW PROCESS
 NP261XHD / NP263XHDÂ
UPGRADED ALUMINUM CONSTRUCTION DESIGN
Fits GM 2500/3500 model trucks with
Allison Transmission and NP261/263XHD units
Â