1 x Coolant reservoir cap, expansion tank cover MJA4440BA, compatible with Jaguar X-Type XJ8 XK8 XKR

This coolant reservoir cap is an essential technical component for the proper functioning of Jaguar engine cooling systems. It regulates pressure in the expansion tank to prevent premature boiling of the coolant, while preserving the integrity of the system. Made from automotive-grade ABS plastic, it withstands high temperatures, pressure variations, and common mechanical stresses. Its OE part number MJA4440BA ensures immediate compatibility with X-Type, XJ8, XJR, XK8, and XKR models (years indicated in the technical specifications). Installation requires no special tools and takes only a few seconds. This component plays a preventative role against engine overheating and extends the coolant's lifespan thanks to its reliable seal.