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Your 6.7L Cummins can breathe easier and pull harder with a straight-through path for intake air. The K&N 71-1557 Blackhawk Induction System replaces the restrictive factory tube and filter with a mandrel-bent aluminum intake and a washable synthetic filter, unlocking real gains on the dyno without any tuning changes.
Key Features
- Mandrel-bent black powder-coated aluminum intake tube
- Washable, non-oiled DRYFLOW synthetic filter media
- Steel heat shield isolates intake air from engine bay heat
- Estimated 71-1557 dyno gain of 9.2 horsepower and 19.1 lb-ft of torque
- Accommodates factory filter minder gauge
- 50-state legal, CARB EO # D-269-36
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2007-2009 | Dodge | Ram 2500 | Verify engine and application notes |
| 2007-2009 | Dodge | Ram 3500 | Verify engine and application notes |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 71-1557 |
| 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 71-1557. 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 71-1557 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 71-1557 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 71-1557?
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
- Disconnect the negative battery cable before starting.
- Disconnect the mass air sensor and intake air temperature sensor connections.
- Loosen the factory intake tube clamps and remove the stock intake tube and filter assembly.
- Install the K&N heat shield in the factory mounting location.
- Mount the new aluminum intake tube and secure it with the included clamps.
- Install the K&N filter onto the inlet of the intake tube and tighten the clamp.
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