Caterpillar 320B, 320B L, 320B LN, 320B N, & 320B S Excavator Boom Cylinder Seal Kit Options:100mm x 140mm 2556851 - 2556951

2556851 - 2556951

1" - 1-3/4"

Serial Numbers: 6201115 - Up Cylinder #s: S602618

Sprocket Guard Left Hand Side

28 inch overall length

Caterpillar 320B, 320B L, 320B LN, 320B N, & 320B S Excavator Boom Cylinder Seal Kit Options:100mm x 140mm 2556851 - 2556951Cylinder Rebuild Repair Seal Kit for Caterpillar 320B, 320B L, 320B LN, 320B N, & 320B S Excavators Please Choose the Option that matches your Machine 85mm x 120mm & 8 Bolt Head Type 1 Serial Numbers: 1XS00001 Up; 2AS00001 Up; 3YZ00001 Up; 5MS00001 Up; 7JR00001 Up; 9WS00001 Up; Cylinder #s: 1184128 Rod: 85 mm Bore: 120 mm 8 Bolt Head 2 Piston Wear Rings, 35 mm and 6 mm Wide 85mm x 120mm & 8 Bolt Head Type 2 Serial Numbers: 1XS00001 Up; 2AS00001 Up;