The oil filler cap, also called the sump cap, is a crucial part of a vehicle's engine. This is a threaded plug that seals off the oil pan filler port, the reservoir that holds the engine oil. For vehicles with right-hand drive (RHD) For vehicles with left-hand drive (LHD) CITROËN/PEUGEOT: 1180.S5, 1180S5, 3646444, 9675477380 C3 II Van/Sedan three- or five-door hatchback C3 II Van/Sedan three- or five-door hatchback C4 II Van/Sedan three- or five-door hatchback JUMPY III Platform Truck/Chassis MONDEO V Three or five-door hatchback sedan TOURNEO CONNECT / GRAND TOURNEO CONNECT V408 MPV TRANSIT CONNECT V408 Van/Minivan TRANSIT CONNECT V408 Van/Minivan CORSA F Three or five-door hatchback/sedan 207 Pickup truck/three- or five-door hatchback sedan 308 Pickup truck/three- or five-door hatchback.