Medium DVSA Vehicles
Alexander Dennis recalls ENVIRO 400 H — Cummins’ isb4.5 210hp eurovi engine valve cover cracking safety campaign
Full details on the official government website →
⚠ What You Should Do
Install a crankcase pressure sensor and a pressure relief valve.
Recall Details
Defect: On vehicles with the affected engine the piston crown may develop a crack creating elevated crankcase pressure leading to a fracture of the valve cover. A fractured valve cover may allow oil to escape and in the presence of an ignition source increases the risk of a fire.
Remedy: Install a crankcase pressure sensor and a pressure relief valve.
Vehicles affected: 401
DVSA Recall Reference: R/2025/419
Make: ALEXANDER DENNIS | Model: ENVIRO 400 H
To check if your specific vehicle is affected, visit the DVSA vehicle recall checker, select your vehicle make and model, and look for recall reference R/2025/419.
Why This Product Is Dangerous
On vehicles with the affected engine the piston crown may develop a crack creating elevated crankcase pressure leading to a fracture of the valve cover. A fractured valve cover may allow oil to escape and in the presence of an ignition source increases the risk of a fire.