Mugen Formula engines, including those for Formula 1, naturally require components manufactured with high precision. Mugen meets such requirements by machining to exacting specifications at its factories. These oil filler caps are manufactured individually from aluminum at the same factories in the same way. "Formula Quality" is a result of the attention Mugen pays to detail. There is no substitute for the authentic Mugen item!

Lower profile design to accommodate K-series era vehicles but will also fit all Honda/Acura vehicle applications excluding the NSX.