Description
The Mishimoto MMAI-BR27-21 is a purpose-built performance intake engineered specifically for the 2021+ Ford Bronco equipped with the 2.7L twin-turbo EcoBoost V6. Molded from rotational molded cross-linked polyethylene, this cold air intake replaces the factory airbox and intake tube with a smoother-flowing, heat-resistant design built to let your Bronco’s engine breathe easier both on and off the trail.
As a dedicated air intake system, the MMAI-BR27-21 pairs a 4.5-inch high-flow air filter with a 20-percent larger cross-sectional area than the stock intake tube, resulting in an intake path that’s up to 39.6-percent less restrictive than the factory unit. Whether you’re after a cold air intake filter that keeps hot engine bay air out of the intake charge or a cool air intake design that maintains the factory fresh air inlet and its dust-trap feature to protect the filter from debris, this Mishimoto air intake filter setup is built for it. On the dyno, running the stock tune, this intake produced an extra 7.5 horsepower and 7.4 lb-ft of torque while maintaining a safe air/fuel ratio, giving your Bronco a genuine boost along with a more aggressive intake tone.
Vehicle Applications
This cold air intake is designed to fit 2021 and newer Ford Bronco models powered by the 2.7L EcoBoost engine, covering the Bronco Badlands and Outer Banks (2021–2026), Base (2021–2023), Big Bend, Black Diamond, and Wildtrak (2021–2024), First Edition (2021), Heritage Edition (2024–2026), Heritage Limited Edition (2023–2024), and Stroppe Edition (2025–2026). Note that this intake does not fit vehicles equipped with the KR Off-Road ARB compressor bracket.
Features
- Rotational molded cross-linked polyethylene (XLPE) airbox, intake tube, and Y-pipe keep engine bay heat out of the intake air
- 4.5-inch high-flow air filter, available in oiled or dry washable configurations
- 20-percent larger cross-sectional area than the stock intake tube
- Up to 39.6-percent less restrictive than the factory air intake system
- Maintains the stock fresh air inlet with a dust-trap feature to protect the filter from dust and debris
- Removable clear airbox lid for quick, easy filter inspections
- Optional Badlands Yellow and Outer Banks Blue airbox lids available separately (MMAI-BR-LIDS)
- Dyno-proven gains of 7.5 horsepower and 7.4 lb-ft of torque on stock tune
- Compatible with Mishimoto Performance Intercooler Pipes for a complete free-flowing charge air system
- Delivers an aggressive intake tone while maintaining a safe air/fuel ratio on stock tune
- Covered under patent US No. D1,048,102 S
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Filter Material: Multi-layered cotton
- Hose Material: Polyethylene
- Hose Color: Black
- Filter Color: Red
- Grade Type: Performance
- Air Filter Part Number: MMAF-4578
- Includes: Rotational-molded airbox, rotational-molded intake tube, rotational-molded Y-pipe, removable airbox lid, high-flow air filter (Model #4578), (2) silicone couplers, (5) worm gear clamps, mounting brackets and hardware, and the Mishimoto Lifetime Warranty
Frequently Asked Questions
What vehicles does the Mishimoto MMAI-BR27-21 cold air intake fit?
It fits 2021+ Ford Bronco models with the 2.7L EcoBoost engine, including Badlands and Outer Banks (2021–2026), Base (2021–2023), Big Bend, Black Diamond, and Wildtrak (2021–2024), First Edition (2021), Heritage Edition (2024–2026), Heritage Limited Edition (2023–2024), and Stroppe Edition (2025–2026).
How much power does this intake add?
On the dyno, running the stock tune, the intake produced an extra 7.5 horsepower and 7.4 lb.-ft. of torque.
What air filter does this intake use, and how do I maintain it?
It uses a 4.5-inch high-flow air filter (part number MMAF-4578) made of multi-layered cotton, available in oiled or dry washable versions. Mishimoto recommends cleaning and re-oiling the oiled filter every 10,000–15,000 miles during normal driving, and inspecting it more often in dusty or off-road conditions. Filter re-oil is not included in the Lifetime Warranty.
Does this intake fit with the KR Off-Road ARB compressor bracket?
No, this intake does not fit with the KR Off-Road ARB compressor bracket.
Can this intake be combined with other Mishimoto parts?
Yes, it is compatible with Mishimoto Performance Intercooler Pipes for a complete free-flowing charge air system.
What does this intake kit include?
It includes a rotational-molded airbox, rotational-molded intake tube, rotational-molded Y-pipe, removable airbox lid, high-flow air filter (Model #4578), two silicone couplers, five worm gear clamps, mounting brackets and hardware, and the Mishimoto Lifetime Warranty.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Not CARB approved. This item is not legal for sale or use on pollution-controlled motor vehicles in California or states that adopt California emissions standards. Intended for off-road / competition use where permitted by law.
