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. Available for all Honda engines.
Fits: ALL C/B/D/F/K/H series motors (WILL NOT fit FK8 K engines)
Pictures of actual oil cap in Blue below:
Pictures of actual oil cap in Red below:
Here's how the red and blue look installed on a K series valve cover:
And also on a b series valve cover