Spark Plug Bosch WR-7-DC+ Bosch Super Plus WR.7.DC WR7DC 1367528 WR 7 DC | Pelican Parts
Spark Plug Bosch WR-7-DC+ Bosch Super Plus WR.7.DC WR7DC 1367528 WR 7 DC | Pelican Parts
BOSCH Super Plus Spark Plugs WR7DC 7900 for Porsche Mercedes - 2 Pcs | 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