1 x 7031SIL. Earlier spec. hose with 2 convolutions in SILICONE  to suit the wide topped radiator (with wide radiator cap). This Top Hose is shorter than the later hose (which has to reach further to the thinner rad top tank) and so features less convolutions.

From Coventry Auto Components' own exclusive tooling.  A fit and forget part that will far outlast it's rubber based rivals ( that perish ) that blow under use, at the least causing engine bay mess. This water loss can often lead to the XK oil/water gauge gas capillary feed blowing and gasket failure that may result in serious engine damage.

Original Ref. C7544 .

To secure use 2 x 8130D Hose Clips

SEE OUR VIDEO ABOUT THESE HERE : SILICONE HOSES VIDEO