NOS Aluminum ST/RSR NOS Blau oil cap, also used on several other Porsche (race) cars. The caps are 86mm outside diameter and have a cork seal.
It comes with a 1.5 inch fillerneck so you can fab your own ST/RSR filler mouth on your oil tank. (These necks are 80 mm outside diameter)
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New Polished Stainless Steel Fuel Cap 110 mm for Centerfiller tank application, thru the hood or under the hood. (New production). Comes with a 100 mm (outside diameter) filler neck of about 3 inches to weld on the fuel tank for an under hood application, or you can extend it to a thru the hood length yourself.
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$300 shipped in CUSA