RFI resistors where specified to eliminate radio static and potential ECU-damaging spikes Our distributor caps are made of high dielectric strength, glass/mineral reinforced polyester resin for less carbon tracking, greater resistance to electrical breakdown, and superior performance Capitalizing on decades of research and development, our distributor caps and rotors contain unmatched quality yielding superior performance As a global manufacturer of original equipment ignition products, we maintain complete quality control throughout the manufacturing process from componentry to finished product Solid brass terminals (where available) make better connections and greater resistance to electrical pitting and corrosionPackage Dimensions: 3.031 x 3.031 x 3.625 inches Package Weight: 0.245 lb Package Quantity: 1 UPC: 091769262228 Contact Terminal Material: Aluminum Contents: Distributer Cap Distributor Cap Color: Black Distributor Cap Contacts Material: Polypropylene Distributor Vent: Yes Gaskets Included: No Ignition Rotor Included: No Instructions Included: Yes Mount Type: Screw Screws included: No Spark Plug Wires Included: No Terminal Quantity: 4 Tower Position: Vertical Country of Origin: TW