1. 3/16-2 Thread Hex-Drive Plug

Caterpillar

• Transmission and Hydraulic Oil Compatibile Seal: 4K-1388 (1-3/16-12)

• Oil and Fuel Compatible Seal: 238-5083 (1-3/16-12)

• Coolant and Urea Compatible Seal: 291-8145 (1-3/16-12)

• O-ring Seal: 4K-1388

• Thread Size (in - TPI) (in): 1 3/16 - 12