Description
The STILLEN TruPower Cold Air Intake with Rain Guard and Oiled Filter for the 2014–2021 Toyota Tundra 5.7L V8 is the only true cold air intake system engineered specifically for this platform. After more than 18 months of development and testing, STILLEN created an intake that delivers measurable reductions in intake air temperatures, increased airflow, and real horsepower and torque gains—not just added noise.
Unlike typical under-hood or short-ram intakes that ingest hot engine bay air, the TruPower system replaces the factory radiator shroud and intake ducting to route cold ambient air directly from the front of the vehicle, through the core support, and into a sealed airbox. This design fully utilizes the factory intake opening while increasing airflow capacity by nearly 50%.
During testing, the TruPower intake reached ambient air temperatures up to 60 seconds faster than the factory intake, achieving ambient conditions three times faster overall. Competing intake systems tested by STILLEN ran hotter than stock and failed to reach ambient temperatures entirely.
This configuration (TP403200) includes a serviceable STILLEN oiled air filter and a removable block-off plate with free-flow tube, making it the preferred choice for drivers who encounter extreme weather, heavy rain, mud, or off-road conditions.
Vehicle Fitment
Fits the following vehicles:
- 2014-2021 Toyota Tundra
- 5.7L V8 engine only
Does NOT fit:
- 4.6L Tundra models
- Vehicles registered in California
Verify engine and emissions requirements before purchase.
Performance Gains
- Up to +20 horsepower*
- Up to +20 lb-ft of torque*
In addition to power gains, the TruPower system dramatically reduces intake air temperatures for consistent, repeatable performance.
Results may vary depending on vehicle condition, fuel quality, and environment.
Key Features and Benefits
- STILLEN TruPower Cold Air Intake System
- Designed specifically for 2014–2021 Toyota Tundra 5.7L V8
- True cold air design drawing air from outside the engine bay
- Achieves ambient air temperatures faster than any other intake tested
- Reaches ambient temperatures up to 60 seconds sooner than factory intake
- Nearly 50% increase in airflow over factory system
- Serviceable STILLEN oiled air filter
- Air filter backed by a limited lifetime warranty
- Modular block-off plate and free-flow tube system
- No cutting or permanent vehicle modifications required
- Simple bolt-on installation with basic hand tools
- Manufactured in the USA
- Not legal for sale or use in California
Oiled Filter & Guard Advantages
The TP403200 configuration is recommended for drivers who operate in extreme or unpredictable conditions, including heavy rain, mud, or off-road environments.
- Oiled filter provides maximum airflow potential
- Removable block-off plate helps protect against water ingestion
- Free-flow tube allows airflow tuning based on conditions
- Block-off plate installs or removes in under 5 minutes
- Added peace of mind for off-road and overland builds
For most daily-driven trucks that will not encounter water crossings, TP403201 (dry filter) is sufficient. For harsher conditions, TP403200 is the ideal choice.
Installation
- Direct bolt-on design
- No cutting, drilling, or fabrication required
- Retains factory mounting locations
- Installs using basic hand tools
TruPower Configuration Options
The TruPower intake system is available in four total configurations combining filter type and airflow channel.
- TP403200 – Oiled filter with removable block-off plate (extreme conditions)
- TP403201 – Dry filter configuration (street and daily driving)
Choose the configuration that best matches your driving environment.
Why Choose STILLEN TruPower?
Most aftermarket intakes prioritize sound over function. The TruPower system was engineered to deliver true cold air, measurable airflow increases, and verified intake temperature reductions.
The result is real horsepower and torque gains, consistent performance under load, and OEM-level fitment—designed specifically for the Toyota Tundra 5.7L V8.
