Upgrade your 2011–2016 Duramax LML with a K&N Cold Air Intake System, engineered to increase airflow, improve throttle response, and deliver noticeable gains in horsepower and torque. Designed to replace the restrictive factory intake, K&N systems allow your engine to breathe easier by smoothing and straightening incoming airflow for maximum efficiency and performance.
K&N intakes feature high-flow, washable, and reusable air filters capable of lasting up to 100,000 miles between services under normal driving conditions. With options ranging from open-element performance intakes to enclosed air box systems, you can choose the setup that best fits your driving style—whether it’s daily driving, towing, or performance builds.
All systems are designed for a simple bolt-on installation with no tuning required, making this one of the easiest and most effective upgrades for your Duramax.
Features
- Increased horsepower and torque
- Improved throttle response
- High-flow washable and reusable air filter
- Up to 100,000 miles between filter services
- Outflows restrictive factory intake
- Durable roto-molded or aluminum intake tubes
- Heat shield or enclosed air box (depending on model)
- Easy bolt-on installation
- No tuning required
The 5 K&N Intake Options Explained
K&N offers multiple versions for the LML, but they break down into different intake styles + finishes:
1. 63 Series AirCharger (Open Heat Shield)
- Open design with heat shield
- Most common option
- Strong airflow + aggressive turbo sound
2. 77 Series High-Flow Intake (Polished Aluminum)
- Metal intake tube (polished)
- Better airflow + premium look
- More “show + performance” setup
3. 77 Series Blackhawk (Black Finish)
- Same as 77 Series but blacked out
- Clean, stealth engine bay look
4. 57 Series FIPK (Factory Airbox Style)
- Retains part of factory airbox
- More OEM-style fitment
- Quieter operation
5. DryFlow Intake (Oil-Free Filter Option)
- Uses synthetic dry filter instead of oiled cotton
- Lower maintenance
- Ideal for dusty environments