{"product_id":"mahle-ms-piston-set-for-gm-ls-403ci-with-4-005-inch-bore-and-4-inch-stroke","title":"Mahle MS Piston Set for GM LS 403ci with 4.005-inch Bore and 4-inch Stroke","description":"\u003cp\u003eThe Mahle MS Piston Set for GM LS engines offers a reliable solution for high-performance applications, specifically designed for 403 cubic inch (CID) engines with cathedral port heads. Crafted with precision, these pistons feature a 4.005-inch bore and a 4-inch stroke, making them suitable for LS1, LS2, and LS6 style engines. Each piston is engineered with a net compression ratio of 11.7:1, optimizing power output and efficiency. Constructed from durable 4032 aluminum, these pistons are lightweight yet robust, ensuring durability under demanding conditions. The set includes eight pistons, each weighing approximately 405 grams, with a pin diameter of 0.927 inches and a rod length of 6.125 inches. Features such as a -4.0cc dish volume contribute to achieving the desired compression ratio while maintaining engine reliability.\u003c\/p\u003e\u003cp\u003eDesigned for performance enthusiasts and professional engine builders, these Mahle pistons are compatible with flat top configurations for LS 5.7L and 6.0L engines. The set is not carburetor approved and requires carb acknowledgment during installation, aligning with specific automotive regulations. While not intended for air freight, these pistons are ideal for ground shipping and installation in custom or rebuild projects. They are manufactured with Prop 65 compliance, ensuring safety and environmental standards are met. With a focus on quality and performance, the Mahle MS Piston Set provides a solid foundation for building powerful, reliable LS-based engines tailored to your vehicle’s needs.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for GM LS 403 cubic inch engines with cathedral port heads\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBore: 4.005 inches, Stroke: 4 inches, Rod: 6.125 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade from durable 4032 aluminum for strength and lightweight performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNet compression ratio of 11.7:1 for optimal power and efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes eight pistons with a -4.0cc dish volume and 0.927-inch wrist pin\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with flat top LS 5.7L and 6.0L engine configurations\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot carburetor approved; requires carb acknowledgment during installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProp 65 compliant for safety and environmental standards\u003c\/li\u003e\u003c\/ul\u003e","brand":"Mahle","offers":[{"title":"Default Title","offer_id":46982950355143,"sku":"mhl930218105","price":765.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/a3916291e80a1fd9be68ac1e8e060c83_fc872f13-c329-4a66-8346-b41f51b6adc6.jpg?v=1786499591","url":"https:\/\/mainstreeteshop.com\/products\/mahle-ms-piston-set-for-gm-ls-403ci-with-4-005-inch-bore-and-4-inch-stroke","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}