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The K&N 57-2571 Performance Air Intake System delivers more airflow to the 5.4L V8 engine in 2007-2009 Ford Mustang Shelby GT500 models including GT500KR. This kit replaces the factory air filter and intake tube with a roto-molded HDPE tube and oversized high-flow oiled cotton filter for guaranteed horsepower and torque gains. A custom heat shield blocks underhood heat while the full system installs in 60 minutes or less using basic hand tools.
Key Features
- Washable High-Flow Air Filter: Reusable design cleans every 100000 miles under normal highway driving with no replacement needed.
- Roto-Molded HDPE Intake Tube: Increases engine airflow volume and pairs with oversized conical oiled cotton filter for better throttle response.
- Custom Heat Shield: Shields intake air from engine bay temperatures to maintain cooler denser air charge.
- Replaces factory air filter and intake tube without cutting or permanent modifications.
- Dyno-proven designs deliver measurable power across RPM range.
- High-density polyethylene HDPE constructed via rotational molding for strength and smooth airflow.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2007-2009 | Ford | Mustang | Shelby GT500, Shelby GT500KR |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 57-2571 |
| Product Type | Cold Air Intakes |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new K&N cold air intakes identified by manufacturer part number 57-2571. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.
About K&N Engineering
K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.
Related K&N Engineering Products
- Shop all K&N Engineering products
- K&N 07-10 Ford Expedition / 09-10 F150 / 07-10 Lincoln Navigator 5.4L V8 Performance Intake Kit
- K&N 10-14 Ford Mustang Shelby GT 5.4L V8 Performance Intake Kit
- K&N 07-09 Ford Mustang GT V8-4.6L Aircharger Performance Intake
Frequently Asked Questions
How do I confirm K&N 57-2571 fits my vehicle?
Match the year, make, and model in the fitment table, then confirm the engine, factory housing, sensor layout, emissions notes, and any application restrictions stated for this exact part.
Does K&N 57-2571 require tuning or emissions verification?
Requirements vary by vehicle and intake configuration. Check the current K&N application and emissions notes, and complete any required calibration before full-load operation.
What should be checked after installing K&N 57-2571?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.
Installation Instructions
- Completes in 60 minutes or less with basic hand tools like screwdriver and pliers
- Bolts to factory mounting points no drilling or custom fabrication required
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