Upgrade your 2013–2016 Duramax LML with the HSP 502-2-HSP Cold Air Intake System, engineered to increase airflow, improve throttle response, and deliver noticeable horsepower and torque gains. Featuring a large 4.5-inch high-flow intake tube and a sealed heat shield box, this intake system reduces restriction and helps your turbocharger pull cooler, denser air for improved combustion and engine efficiency.
The HSP intake draws air from the factory fender inlet while isolating the filter from engine bay heat using a sealed heat box and lid design. This helps maintain lower intake temperatures and more consistent performance under towing, daily driving, and performance applications. Dyno testing has shown gains of approximately 20 horsepower and 58 lb-ft of torque, making this one of the most popular intake upgrades for the LML Duramax platform.
Built with quality materials and available in multiple powder coat finishes, the HSP Cold Air Intake not only improves performance but also enhances engine bay appearance.
Features
- 4.5” high-flow intake tube
- Sealed heat shield box with lid
- Pulls cold air from factory fender inlet
- Increased horsepower and torque
- Improved throttle response
- Washable and reusable air filter
- Heavy-duty silicone boots and clamps
- Multiple powder coat color options available
- Direct bolt-on installation
- No tuning required
Notes
- This is for Late LML (2013–2016)
- Early LML (2011–2012) uses 502-1-HSP intake
- Late LML uses 502-2-HSP intake