{"product_id":"sfi-18-1-harmonic-balancer","title":"SFI-18.1 Harmonic Balancer","description":"It meets SFI-18.1 standards and has undergone rigorous spin-testing up to 12,500 rpm, ensuring its durability under high-stress conditions. The damper is constructed from durable carbon steel with an injection-molded and bonded elastomer for optimal performance and longevity.\n\nKey features include easy-to-read engraved timing marks for precise engine tuning and a highly polished, baked-enamel finish that provides a professional look. This balancer is designed with an internal engine balance and boasts a 25 percent underdrive integral harmonic damper and crank pulley design. An alternator pulley is included, and the damper is specifically designed to fit long spacing pulley kits, making it a suitable upgrade for many LS-based GM Truck and SUV engines, including those with 4.8L, 5.3L, and 6.0L displacements.\n\nInstallation of this harmonic balancer requires additional components. It necessitates the purchase of NAL-12557840 and a new belt, as it integrates a 25% under-drive design. Mounting hardware is not included with this damper. The manufacturer's part number is SUM-C2520.","brand":"Summit Racing","offers":[{"title":"Default Title","offer_id":52663906369848,"sku":"SUM-C2520","price":228.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687719452.jpg?v=1784330690","url":"https:\/\/store.motormia.co\/products\/sfi-18-1-harmonic-balancer","provider":"MOTORMIA","version":"1.0","type":"link"}