aFe MagnumFORCE Air Intake System Stage-2 Si Pro DRY S Toyota Tundra 07-14 V8 5.7L

Sealed, molded plastic or aluminum cover provides factory style with less intake noise than open systems. Our specially engineered air box openings pull cold air from outside the engine compartment increasing engine efficiency and producing greater performance gain. The cross-linked polypropylene rotomolded plastic air box replaces restrictive stock air box and ensures a consistent supply of cold fresh air; built-in ram scoop forces cold, outside air to filter. Precision designed molded plastic intake tube maximizes airflow volume and speed for optimum power gains. 360 degree flow, washable and reusable, limited lifetime filters are high flow and high performance. Magnum FORCE Stage-2Si Cold Air Intake System w/ Pro DRY S Filter Toyota Tundra 07-21/Sequoia 08-22 V8-5.7L

• Washable and Reusable Pro DRY S Air Filter for Maximum Convenience
• Heat-Resistant Sealed Housing w/ Black Powder-Coated Cover
• Measured Flow: 253 CFM @ 1.5" H2O
• Outflows Factory Intake by 50%
• +19 HP & +27 Lbs. x Ft. TQ

The aFe MagnumFORCE Stage-2 Si Cold Air Intake System is engineered for select Toyota Tundra and Sequoia models equipped with the V8 5.7L engine. Part Number 51-81174 replaces the restrictive factory air box and intake tube with a sealed, high-flow system designed to improve airflow, throttle response, and power potential. Its enclosed design helps reduce intake noise compared with open-element systems while maintaining a factory-style appearance under the hood.
The cross-linked polypropylene air box features strategically engineered openings that draw cooler air from outside the engine compartment. An integrated ram scoop helps direct fresh, cold air toward the filter, supporting more consistent intake temperatures during demanding driving. The precision-molded intake tube is designed to improve airflow volume and velocity, helping the engine breathe more efficiently. Testing shows a measured flow of 253 CFM at 1.5 inches of water and up to 50 percent greater airflow than the factory intake, with reported gains of up to 19 horsepower and 27 lb.-ft. of torque.
This system includes a washable and reusable aFe Pro DRY S filter that delivers high-flow performance without requiring oil for maintenance. The heat-resistant sealed housing is paired with a black powder-coated cover for added durability and a clean appearance. The filter's 360-degree airflow design supports efficient filtration and long-term use, making the intake a practical upgrade for street-driven and performance-focused trucks and SUVs. Confirm vehicle application before ordering, as fitment varies by model year and configuration. This product is not CARB approved; review applicable emissions regulations before installation or use.

Features:

• Sealed, heat-resistant air box helps draw cooler outside air while reducing intake noise compared with open systems

• Cross-linked polypropylene rotomolded housing replaces the restrictive factory air box

• Integrated ram scoop directs cold outside air toward the filter

• Precision-molded intake tube is designed to maximize airflow volume and velocity

• Washable and reusable Pro DRY S filter provides high-flow, oil-free filtration

• Measured airflow of 253 CFM at 1.5 inches of water

• Flows up to 50 percent more air than the factory intake

• Reported gains of up to 19 horsepower and 27 lb.-ft. of torque

• Black powder-coated cover provides a durable, factory-style appearance

Fitment:
Toyota Sequoia Limited 2008
Toyota Sequoia Limited 2009
Toyota Sequoia Limited 2010
Toyota Sequoia Limited 2011
Toyota Sequoia Limited 2012
Toyota Sequoia Limited 2013
Toyota Sequoia Limited 2014
Toyota Sequoia Platinum 2008
Toyota Sequoia Platinum 2009
Toyota Sequoia Platinum 2010
Toyota Sequoia Platinum 2011
Toyota Sequoia Platinum 2012
Toyota Sequoia Platinum 2013
Toyota Sequoia Platinum 2014
Toyota Sequoia SR5 2008
Toyota Sequoia SR5 2009
Toyota Sequoia SR5 2010
Toyota Sequoia SR5 2011
Toyota Sequoia SR5 2012
Toyota Sequoia SR5 2013
Toyota Sequoia SR5 2014
Toyota Tundra 1794 Edition 2014
Toyota Tundra 1794 Edition 2015
Toyota Tundra 1794 Edition 2016
Toyota Tundra 1794 Edition 2017
Toyota Tundra 1794 Edition 2018
Toyota Tundra 1794 Edition 2019
Toyota Tundra 1794 Edition 2020
Toyota Tundra 1794 Edition 2021
Toyota Tundra Base 2007
Toyota Tundra Base 2008
Toyota Tundra Base 2009
Toyota Tundra Base 2010
Toyota Tundra Base 2011
Toyota Tundra Base 2012
Toyota Tundra Base 2013
Toyota Tundra Limited 2007
Toyota Tundra Limited 2008
Toyota Tundra Limited 2009
Toyota Tundra Limited 2010
Toyota Tundra Limited 2011
Toyota Tundra Limited 2012
Toyota Tundra Limited 2013
Toyota Tundra Limited 2014
Toyota Tundra Limited 2015
Toyota Tundra Limited 2016
Toyota Tundra Limited 2017
Toyota Tundra Limited 2018
Toyota Tundra Limited 2019
Toyota Tundra Limited 2020
Toyota Tundra Limited 2021
Toyota Tundra Nightshade 2021
Toyota Tundra Platinum 2010
Toyota Tundra Platinum 2011
Toyota Tundra Platinum 2012
Toyota Tundra Platinum 2013
Toyota Tundra Platinum 2014
Toyota Tundra Platinum 2015
Toyota Tundra Platinum 2016
Toyota Tundra Platinum 2017
Toyota Tundra Platinum 2018
Toyota Tundra Platinum 2019
Toyota Tundra Platinum 2020
Toyota Tundra Platinum 2021
Toyota Tundra SR 2014
Toyota Tundra SR 2015
Toyota Tundra SR 2016
Toyota Tundra SR 2017
Toyota Tundra SR 2018
Toyota Tundra SR 2019
Toyota Tundra SR 2020
Toyota Tundra SR 2021
Toyota Tundra SR5 2007
Toyota Tundra SR5 2008
Toyota Tundra SR5 2009
Toyota Tundra SR5 2010
Toyota Tundra SR5 2011
Toyota Tundra SR5 2014
Toyota Tundra SR5 2015
Toyota Tundra SR5 2016
Toyota Tundra SR5 2017
Toyota Tundra SR5 2018
Toyota Tundra SR5 2019
Toyota Tundra SR5 2020
Toyota Tundra SR5 2021
Toyota Tundra Trail 2021
Toyota Tundra TRD Pro 2015
Toyota Tundra TRD Pro 2016
Toyota Tundra TRD Pro 2017
Toyota Tundra TRD Pro 2019
Toyota Tundra TRD Pro 2020
Toyota Tundra TRD Pro 2021