Hooker BlackHeart Clamshell Engine Mounts and Polyurethane Engine Mount Inserts are now available for GM LS and Gen 5 LT engines. These clamshell housings are a two piece bolt together design featuring heavy-duty 11 gauge steel construction with a durable powder coated finish. Hooker BlackHeart Polyurethane Engine Mount Inserts have been designed with durability, performance, and ease of installation in mind. The inserts are available in both black and red, and feature factory style indexing tabs to help with alignment during installation. Heavy Duty Thermoplastic Polyurethane Over-Mold For Durability Polyurethane Over-Mold Fully Encapsulates/Interlocks Heavy Duty Zinc Plated Inner Core For Durability/Corr. Resistance Polyurethane Around Thru Bolt Provides Cushion Sold Individually - Two Required Per Vehicle Additional Attributes: GTIN: 00090127011560 Color: Red Material: Polyurethane Position: N/A WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov Extened Information: Emissions : Emission verification to be determined in ACES, vehicle application data. Life Cycle Status: Available To Order Packaging: Quantity of Each: Package UOM: Dimension: 6.0000 x 5.5000 x 4.0000 inches