Product Affected
Description of Change
A new cylinder head part number has been released following a change of intake valve stem seal.
Reason for Change
A new valve stem seal has been implemented on intake side to increase lubricating oil flow and reduce valve guide wear over the life of the cylinder head, preventing excessive guide wear requiring early cylinder head changes.
Service Parts Availability
Service parts are available. See Table 1 for part numbers.
Table 1, Service Parts |
Part Description | Existing Part Number | Obsolete | Superseded | New Part Number |
Cylinder Head | 5635345 | Yes | Yes | 5694550 |
Part Inventory Action
Existing cylinder head part numbers have been built with new valve stem seal under deviation since August 2020 and the change in part number is purely for tracing purposes. Continue to use existing cylinder head part number until no longer available and superseded by new part number.
Production Status
Implemented for production. See Table 2.
Table 2, Production Information |
ESN First (built with new cylinder head, Part Number 5694550 ) | Build Date | Plant |
33225821 | 13 August 2021 | Daventry |
Engine build date can be found on the engine dataplate. |
Additional Parts are also available. Check with Qingbang Online Service.
