The GReddy Type-B oil filler cap in blue is listed for Toyota applications with the M37-P3.0 fitting. It serves as a direct cosmetic replacement for the factory cap where that thread specification is required, offering a color-matched accent for the engine bay. The Type-B cap provides a finished look while matching the Toyota filler neck size given in the product description.
GReddy Type-B Oil Filler Cap Toyota M37-P3.0 - Blue