{"product_id":"billet-aluminum-underdrive-pulley-kit-3-piece","title":"Billet Aluminum Underdrive Pulley Kit, 3-Piece","description":"The March Performance underdrive pulley kit is a three-piece set consisting of water pump, crankshaft, and alternator pulleys, designed for 1979-1993 Mustangs with 5.0L engines and serpentine belt systems. Each piece is precision-machined from 6061-T6 billet aluminum and finished with a clear powdercoat to provide a non-polishing, long-lasting show appearance.\n\nThis kit is intended to function exclusively with stock crankshaft damper assemblies. If you are using aftermarket damper assemblies, a crank pulley spacer is required for proper fitment. Specific spacers, including part numbers M-8510-50A, 50B, and 50C, are necessary if you are not using the factory-original damper setup.\n\nPlease note that this set does not fit stock pulley configurations found on non-compatible systems. Verify your vehicle's damper assembly before installation to ensure compatibility with these underdrive components.","brand":"March","offers":[{"title":"Default Title","offer_id":52662944137528,"sku":"M-8509-30B","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687502833.jpg?v=1784321921","url":"https:\/\/store.motormia.co\/products\/billet-aluminum-underdrive-pulley-kit-3-piece","provider":"MOTORMIA","version":"1.0","type":"link"}