Compatible with Chevrolet Models:
2004-2004 W3500 Tiltmaster L4 4.8L
2005-2006 W3500 Tiltmaster L4 5.2L
2005-2007 W4500 Tiltmaster/W5500 Tiltmaster/W5500HD Tiltmaster L4 5.2L Without Hydro-Boost
Compatible with GMC Models:
2004-2004 W3500 Forward L4 4.8L
2005-2006 W3500 Forward L4 5.2L
2005-2007 W4500 Forward/W5500 Forward/W5500HD Forward L4 5.2L Without Hydro-Boost
Compatible with Isuzu Models:
2004-2004 NPR L4 4.8L
2005-2005 NPR L4 5.2L Cab & Chassis - Cab Forward
2006-2006 NPR L4 5.2L with Forward Control Chassis Cab
2004-2004 NPR-HD L4 4.8L
2005-2007 NPR-HD/NQR L4 5.2L Without Hydro-Boost
Specifications:
Pulley Included: Yes
Reservoir Included: No
Hose Port Type: Washer
Housing Material: Cast Iron
Power Steering Outlet Thread Size: 12x1.25
Power Steering Pump Inlet Attachement Type: Hose Barb
Power Steering Pump Outlet Attachment Type: Threaded
Power Steering Pump Outlet Quantity: 1
Power Steering Reservoir Cap Included: No
Pulley Attachement Type: Press-on
OEM Number: 21-318, 21318, 8973572130, 8973886510
Quantity Sold: One Piece
Note: It comes with Pulley; It comes without Reservoir; It fits the model with Diesel Only