2025 GMC Truck Sierra Denali 2500 Engine — Part # G25310 — OEM Auto Recyclers-PRP Freight, ARA · Bluffton, OH

When selecting an engine for your 2025 GMC Truck Sierra Denali 2500, one critical but often overlooked factor is the specific engine configuration and its environmental impact. This listing features a 6.6L Diesel engine (OPT-L5P) designed exclusively for this model year and trim, emphasizing both performance and efficiency. The engine is sold as "ENGINE ONLY," meaning it does not include ancillary components such as wiring harnesses, sensors, or mounting hardware, which buyers should verify before purchase. This particular engine is graded "A," indicating it is in excellent condition, and it carries an estimated CO2e savings of 1194kg, reflecting its environmental benefits compared to older or less efficient engines. While the seller notes provide this information, it is essential to confirm that this engine matches your vehicle’s exact specifications, especially considering the OPT-L5P option code, which denotes a specific diesel engine variant. When comparing this engine to other options, consider the compatibility with your vehicle’s existing systems and any additional parts you may need for installation. Since this is an engine-only listing, buyers should prepare for potential additional purchases such as engine mounts or electronic components. The seller stock identifier G25310 can be used to reference this exact unit when communicating with the seller or verifying inventory. For more detailed parts or alternative options, you may explore GMC parts or specifically browse Truck Sierra Denali 2500 parts to find compatible components. Before finalizing your purchase, ensure thorough comparison with your vehicle’s current engine specifications and consult with a professional to confirm fitment and installation requirements. Taking these steps will help you secure a high-quality, environmentally friendlier engine suited for your 2025 GMC Truck Sierra Denali 2500.