JCB 4CX Boom Knuckle/Offset Cylinder Seal Kit - 60 mm X 100 mm 8J9959 Caterpillar used the 191-9203 seal

Caterpillar used the 191-9203 seal kit on several hydraulic cylinders

The Tohren for Caterpillar 170-9941 warranty is offered by Tohren on all Tohren seals

We have JCB 540-170 Lift cylinder seal kits in stock

Tohren for Caterpillar 207-3498 Seal Kit

The Tohren for Caterpillar 7X2815 warranty is offered by Tohren on all Tohren seals

JCB 4CX Boom Knuckle/Offset Cylinder Seal Kit - 60 mm X 100 mm 8J9959 Caterpillar used the 191-9203 sealSeal Kit for JCB 4CX Boom Knuckle Offset Cylinder Chrome Rod Diameter 60 mm, Internal Bore 100 mm This JCB 4CX Boom Knuckle Offset cylinder seal kit is on the shelf here, and if you order before 2pm we will dispatch the kit the same day. It's to fit an unusual side knuckle on the 4CX, which enables the dipper arm to be swung sideways 90 degrees to the boom. As far as we are aware, this was the only seal kit ever used in this application so if you're