The oil cap on top of an engine is an incredibly simple car part, but it is essential that it is in good condition for the engine to function correctly. It is usually a small plastic cap that fits over the oil inlet.
It must be possible to unscrew and remove the cap to add more oil to the engine as needed. It is also vital that quality

oil caps

for every type of car provide an airtight seal to the oil chamber in order to keep the oil in and the outside environment out. Poorly fitting or damaged oil caps should be replaced immediately. Show Less

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