The item consists of a cap MS90376-20Y, polarizing keyway, and may include an Electronic Test Interface (ETI) as an optional accessory. The ETI's presence depends on the sub-assembly dash number. Sub-assembly -104 has a cover plate 10104552-101 instead of the ETI. The item also includes sensor surveyor assemblies 10078752-101 and 10078752-102, a plate identification tag 435100, and dust caps MS90376-20Y.