Bosch spark plugs, "cold" type W7AC for Volkswagen Beetle & Combi - by 4 W7AC W7AC - VC32103 bosch - Mecatechnic.com
Spark Plugs; Short reach Part # W7AC
Bosch and NGk performance spark plugs for VW Volkswagen W8AC W8CC W7AC W7CC NGK D7EA D8EA Original Bosch and NGK replacement spark plugs for VW Volkswagnes are offered in several heat ranges,
Tomos SportR 25 2007 Bosch Spark Plug W7AC | eBay
Candle Bosch W7AC short thread for Vespa (equivalent degree of temperature at NGK B6HS - CHAMPION L86C)