6.0L LQ4 Long Block Crate Engine

The GM Performance 6.0L LQ4 Long Block (12733808) is a genuine GM Parts engine assembly built for restoration and performance enhancement. The inclusion of aluminum heads contributes to a lighter overall engine weight, improving vehicle balance and heat dissipation. Forged from precision-engineered steel, the crankshaft is built to thrive under high-power demands, providing a solid foundation for performance. Further enhancing its performance and longevity, this long block is equipped with hypereutectic aluminum alloy pistons, ensuring maximum compression and minimal wear for efficient and reliable operation over time. It is presented as the heart of vehicular restoration and performance improvement, serving as a strong base for enthusiasts and mechanics. This product replaces GM part number 12675575. It is a new item and comes with a manufacturer warranty of a minimum of 12 months. Please note that a mandatory core charge of $2,500.00 applies to this purchase. For delivery, lift gate service may be required if the destination lacks a loading dock or forklift; otherwise, the engine will be delivered to the nearest FedEx freight facility for pickup. Additionally, this product is subject to California Proposition 65 warnings regarding cancer and reproductive harm.