The discontinued A'PEXI GTSEC Radiator Cap? Are there two different generations of the caps? or is one a fake? Is one of the caps from Apexera or APEXi, what is the difference? 

Increased pressure rating to 1.3kg/cm

Enables improved radiator pressure for increased cooling performance

Available in Type 1 and 2 to suit most vehicles

Material: Stainless Steel, Silicone

By looking at the package that it comes in, it seems the design or main wording hasn't changed in a while. Other than the part number being different there is only one distinct difference.(53)

One of the issues I was worried about is if this was a real or fake Apexi brand cap. (56) I have found several sites that show selling some of the  knock off brand stickers emblems on there caps. Well at least they use blue silicone seals for the caps. 

Same company that sells them, one on eBay and the other on JK's origninal website.

A'PEX Co. Ltd. was founded in 1992 on the principle that top-quality performance parts should be available to everyone at a reasonable price. This guiding principle gained instant popularity among racing enthusiasts worldwide. Top engineers from some of the best car companies, and highly qualified businessmen from various backgrounds were eager to invest their time and energy in the company. A'PEX quickly earned a worldwide reputation of being one of the leading manufacturers of automotive performance products. In less than ten years, A'PEX has become a multinational firm with over 230 employees boasting: a suspension manufacturing plant, an exhaust system manufacturing plant, a racecar engineering center, seven sales offices throughout Japan, a sales and R&D office in the United States, and dozens of distribution and strategy partners worldwide. 

https://web.archive.org/web/20040805041945/http://www.apexi-usa.com/about.asp 

Who is the Apexera? Accoding to some car forms and sale sites: Some say that Apexi changed there name to Apexera, While other say the Apexera is an partner company to Apexi. I found two links from forms that show the Apexera web link for Apexi.(57, 58, 59-60, 

https://www.350z-uk.com/topic/55801-apexi-radiator-cap-new-sold/ 

take pictures of the brand on the new one. more pics of it in the package.

film the silicone bottom - compair it to a stanard one.