other than being a cap, hmmmmm lets see..... adds a splash of blue color to the interior of the rear trunk. it is not a pressure relief and recovery cap like the typical radiator cap in a overflow recovery system.
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2005 Porsche Boxster S, 2000 Porsche Boxster 2.7L Base, 2000 Mazda Miata LS Supercharged, 2010 Toyota Tacoma TRD Off Road
Previous Vehicles: 2005 Ford Mustang GT, 1986 Alfa Romeo Spider, 1971 Alfa Romeo GTV, 1999 Ford Mustang
1977 Toyota Celica GT
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