Spark Plug-Nickel Bosch 7900 for sale online | eBay
Super Plus Resistor Spark Plug BMW Airhead WR7DC+12129062594 / BOSCH 7900 | eBay
BMW Spark Plug Bosch WR7DC+ - 12129062594
Bosch Super spark plugs WR7DC | eBay
Spark plug Bosch WR7DC for 520/4+520i all years of manufacturing, you need 4 for 1 car and for 525+528 up to 08/1976, you need 6 for 1 car | Wallothesch