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The K&N 57S-4001 Generation II induction kit replaces the restrictive factory air intake on 2011-2019 Ford Ranger models with 3.2L L5 Duratorq-TDCi diesel engine. This system eliminates airflow restrictions for up to 12.74 HP gain at 3844 RPM while improving throttle response and engine sound. Built with a washable reusable air filter and rotationally molded tube it delivers more air to the engine for real power gains.
Key Features
- High-Flow Air Filter: Washable and reusable K&N lifetime filter lasts up to 100000 miles between cleanings depending on driving conditions.
- Quick Installation: Bolt-on design installs in 60 minutes or less with no vehicle modifications required.
- Rotationally Molded Tube: Non-metallic design lowers intake air temperatures and quiets sound compared to metal tubes.
- Complete Air Path Replacement: Removes factory restrictions driving massive airflow into the engine for proven horsepower increases.
- Yes it fits all 2011-2019 Ford Ranger PX and PX MkII trims equipped with the 3.2L L5 Duratorq-TDCi diesel engine.
- High-strength rotationally molded cross-linked polyethylene plastic resists heat and maintains shape.
Fitment
| Fitment Status | Universal or dimensional product |
|---|---|
| Required Verification | Exact dimensions, media, connection, mounting interface, and companion part number |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 57S-4001 |
| Product Type | Cold Air Intakes |
| Fitment Type | Universal |
| Condition | New |
What's Included
One new K&N cold air intakes identified by manufacturer part number 57S-4001. 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.
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Frequently Asked Questions
How do I confirm K&N 57S-4001 fits my setup?
Match every listed dimension, flange or thread size, media type, mounting interface, and companion component. A similar shape or outside dimension alone does not confirm compatibility.
Does K&N 57S-4001 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 57S-4001?
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
- Basic hand tools sufficient no special tools needed
- All factory mounting points and hardware compatible
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