Parts for your 1999 Toyota Rav4-Oil cap

1999 Toyota RAV4 Oil Cap — What It Does and When To Replace It

Based on Toyota’s own technical material, the 1999 Toyota RAV4 absolutely uses an engine oil filler cap. The 1999 RAV4 (SXA10/11 with the 3S‑FE engine) is shown with an oil filler cap on the cam/rocker cover in the Toyota Owner’s Manual and service literature, and the Toyota Electronic Parts Catalogue lists a dedicated oil filler cap assembly with a sealing gasket for this model. So yes — the oil cap is fitted and it’s a necessary bit of kit.

On this RAV4, the oil cap does more than just give an entry point for top-ups. It seals the top of the engine so oil doesn’t splash out and dust, moisture, or road grime don’t get in. That proper seal helps the crankcase ventilation system do its job and keeps the engine bay cleaner. Under the bonnet it’s a simple, twist-to-seat cap with a built-in rubber gasket