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The GReddy Type-B oil filler cap in blue is listed for Mazda with a 33.7 specification referenced in the description. This Type-B cap serves as a colored replacement for the factory cap on Mazda engines that use the 33.7-sized filler neck, providing a simple visual upgrade while maintaining the described fitment compatibility and threaded connection.
GReddy Type-B Oil Filler Cap Mazda 33.7 - Blue
