This is probably because of modern fuel additives & the introduction of ethanol into fuel. Repair kit for a four cylinder alloy Bosch. Two O-rings for connection between fuel distributor and electrohydraulic actuator.
0438101002 Repair Kit for Bosch Fuel Distributor Mercedes 190E, 200E, 230GE
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904-728 Dorman EGT Sensor for MB Mercedes ML Class Mercedes-Benz ML350 GL350
