filter4dApplication: 2008 Audi RS4 BNS Fits the application. Snap fits just fine with OEM oil filter housing cap (which is really mating with a snap fit to a removable adapter disc so itフェノールレッド liquid, 0.5%, sterile-filtered, BioReagent, suitable for cell culture; CAS Number: 143-74-8; Synonyms: Phenolsulfonphthalein solution at Sma-Aldrich