{"product_id":"bmw-s65-4-0l-power-pulley-kit","title":"BMW S65 4.0L Power Pulley Kit","description":"The Active Autowerke 13-001 is an underdrive pulley kit engineered to enhance performance for the BMW E9X M3 models equipped with the S65 4.0L engine. The kit includes all essential BMW power pulleys for the alternator, water pump, and power steering systems. It is constructed from aircraft-grade billet 6061 hard-coat anodized aluminum for durability and strength.\n\nA significant aspect of this kit is the inclusion of a specially manufactured double-sided belt (DPK) for the air conditioning system. This is crucial because altering the crankshaft main pulley size affects the A\/C belt. Recognizing BMW's transition to a double-sided groove belt on late production 2007 E9X M3 models, Active Autowerke developed this aftermarket DPK to match the original quality. An extra spare DPK belt is provided with the kit for added convenience and to address potential emergency circumstances.\n\nThe Active Autowerke 13-001 pulley kit is designed for easy installation and is fully reversible. It is compatible with both DCT and manual transmission models. This modification reduces rotational mass without introducing the overheating issues sometimes seen with smaller pulley designs. For maximum benefit, it is recommended to pair this kit with Active Autowerke software.\n\nThis power pulley kit is specifically designed for BMW E90, E92, and E93 M3 models with the S65 4.0L engine, produced between 2007 and May 2008.","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":52686768144696,"sku":"13-001","price":312.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660178952.jpg?v=1784876490","url":"https:\/\/store.motormia.co\/products\/bmw-s65-4-0l-power-pulley-kit","provider":"MOTORMIA","version":"1.0","type":"link"}