The filler necks feature a 1/2" NPT thread for easy integration of an engine breather, providing flexibility for customization.
The products are black anodized for a sleek appearance in the engine bay while providing excellent corrosion resistance, offering both functionality and visual appeal.
FranklinPerformance manufactures billet aluminum oil filler necks and caps using CNC machining with high-quality 6061 aluminum, ensuring durability and precision.
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FranklinPerformance is proud to manufacture billet aluminium oil filler necks and caps compatible with Mazda rotary engines.
CNC Machined from high quality 6061 aluminium and black anodised for great looks and corrosion resistance, these oil filler tubes and caps replace the standard metal filler and plastic cap which stick up high in the engine bay. The filler necks fits straight into the 29mm hole in the centre plate.
Filler necks have a 1/2" NPT thread in the side for fitting an engine breather. We also have shorter filler necks available with no breather fitting and the oil caps available separate, check out our other listings.
