The Bosch 03151 Distributor Cap is designed for 4-cylinder Fiat, Renault, and Peugeot vehicles, with compatibility for OE part number 594123. This vintage cap features low resistance terminals, phenolic construction, and copper materials for reliable ignition performance. Made in the United Kingdom, it is a genuine Bosch product with interchange part numbers 5D1257, DC900, and 511559. However, it is important to note that this product contains a chemical known to the State of California to cause cancer and reproductive harm, as indicated by the California Prop 65 Warning.