The PORC Off Road Products engine oil cap is designed as a direct replacement for 1980–1990 Jeep CJ, YJ, XJ, and SJ models with 2.0L, 2.1L, 2.5L, 2.8L, 4.0L, and 4.2L engines. This cap installs on the engine valve cover and integrates with factory components for proper fitment. Manufactured to match original specifications, it is designed for consistent installation and compatibility with the engine oil fill location. The design allows for straightforward installation without modification. Ideal for replacing worn or missing components, this cap restores proper fitment at the engine oil fill point. Replaces OE reference 33001016 and Interchange part number 17403.02.