Cummins Isb4.5e6c210h Diesel Engine: B4.5 Euro VI Valve Cover Cracking Safety Campaign

Recall Summary Cummins is recalling 24 vehicles with ISB4.5E6C210H diesel engines because engine pistons may develop cracks that increase pressure in the crankcase, potentially causing the rocker cover to crack and leak oil. A leaking rocker cover creates a fire risk. The manufacturer will install a crankcase pressure sensor that alerts drivers when pressure becomes abnormal.

Recalling firm
CUMMINS INC
Product
Vehicles: CUMMINS ISB4.5E6C210H Diesel Engine. Units affected: 24
Reason
On affected vehicles the engine piston crown may develop a crack and create elevated crankcase pressure which may cause the rocker cover to fracture. A fractured rocker cover may allow oil to escape increasing the risk of a fire. Remedy: Fit a crankcase pressure sensor which will trigger an associated fault code and provide visible warning that crankcase pressures are above normal levels.
Classification
Class I
Category
vehicle recall
Country
United Kingdom
Agency
UK Driver and Vehicle Standards Agency
Recall date
2025-08-29
Status
Ongoing
Distribution
United Kingdom

Official recall notice from UK Driver and Vehicle Standards Agency

Recall details on Nibble Recalls: https://trynibble.app/recalls/423cc80d-d440-4378-a7f8-b3332307a883