Round head bolt M8x25 320/B0730 JCB 444, genuine, option 1

For the machines with the JCB Dieselmax 444 engine: round head bolt M8x25 320/B0730, a genuine JCB part. According to the product card, this part is a round head bolt, size M8x25.

For many engine bolts the maker specifies tightening to a torque followed by a further angle; such bolts stretch permanently as they are tightened and are not reused. Connecting rod, flywheel and crankshaft pulley bolts are therefore usually renewed during repairs. Bolt length and head also matter, as a bolt of the wrong length may bottom in the hole or engage too few threads. The bolt is chosen by part number according to the engine serial number.

Specifications

Compatibility

According to the product card, 320/B0730 is an engine bolt. Fit is confirmed by the part number. The catalogue also has the genuine version of this part. Other parts are in Fasteners.

Fitting

Before fitting the bolt, clean the hole and threads, and oil the threads with engine oil where the maker specifies it. Tighten the bolt with a torque wrench, using the angle method if required, and keep to the sequence and stages in multi-bolt joints.