This retaining spring is located on the rear of the vehicle and hold the end of the brake line in place keeping from moving into harms way. If you are missing this piece or have a broken one, your brake lines could be in trouble.
4PCS ABS Wheel Speed Sensor For Mercedes Sprinter 3.5-T 3-T 4.6-T 5-T B906 06–21
Car Door Handle Rear Back Door for Mercedes Sprinter W906, Exterior Sliding Door Handle Left Side N/S, for Benz Sprinter W906 2500 3500 Crafter 2006 Onwards OE 9067600170 2E1843703A 68006564AA
4pcs For Mercedes OM642 Turbo & Breather Intake Seal & Black & Green O Rings
EXPANSION LOCK FOR REAR BRAKE SHOE SHACKLE FOR MERCEDES SPRINTER G-CLASS
generic Expansion Lock For Rear Brake Shoe Shackle For MERCEDES Sprinter A2014200589