*Product Discontinued by Mercedes - No Longer Available* - Customers are using the 647 078 08 81 hose and press fitting them in using a heat gun to soften the larger diameter part of the hose prior to installation, see below.
This is a rubber fuel hose elbow at the diesel injection pump using 2 x 13mm hose clamps, one at each end.
This hose has one end which has a larger inside diameter on one end of the hose.
Fuel Hose C is similar in appearance however, both ends have the same size inside diameter.