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More Airflow, More Power for Your Cummins Diesel
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
- Typical installation in 90 minutes or less with basic hand tools
- Backed by the K&N Million Mile Limited Warranty
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2007-2009 | Dodge | Ram 2500 | |
| 2007-2009 | Dodge | Ram 3500 |
Fits 6.7L Cummins diesel engines only.
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 71-1557 |
| UPC | N/A |
| Brand | K&N Engineering |
| Series | Blackhawk Induction System |
| Intake Tube Material | Mandrel-Bent Aluminum |
| Intake Tube Finish | Black Powder Coat |
| Replacement Filter | RU-5177HBK |
| CARB EO Number | D-269-36 |
| Warranty | Million Mile Limited Warranty |
What's Included
- Mandrel-bent aluminum intake tube
- K&N washable synthetic air filter
- Steel heat shield
- Mounting hardware and clamps
- Installation instructions
About K&N Engineering
K&N Engineering has designed and manufactured high-performance air filtration and intake systems for over 50 years, backing its intake systems with the Million Mile Limited Warranty and a reputation for measurable dyno-proven gains.
Related Parts
FAQ
What is the 71-1557?The 71-1557 is a K&N Blackhawk Induction air intake system for 2007-2009 Dodge Ram 2500 and 3500 pickups with the 6.7L Cummins diesel engine, replacing the factory tube and filter with a higher-flow aluminum intake and washable synthetic filter.
How much power does the 71-1557 add?K&N dyno testing shows an estimated gain of 9.2 horsepower and 19.1 lb-ft of torque at the wheels on a stock 2007-2009 Ram 6.7L Cummins.
Is this intake legal in California?Yes, the 71-1557 is 50-state legal and carries CARB EO number D-269-36.
Does the filter need to be oiled?No, this system uses K&N's DRYFLOW synthetic filter media, which is washable and does not require oiling.
Will this work with my factory filter minder gauge?Yes, the intake tube is designed to accommodate the factory filter minder gauge if your truck is equipped with one.
How long does installation take?Most installers complete the swap in 90 minutes or less using basic hand tools.
Does this require any engine tuning?No, the 71-1557 works with your factory engine tune and mass air sensor settings with no reprogramming needed.
What warranty does K&N provide?This intake system is backed by K&N's Million Mile Limited Warranty.
Install 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.
- Reconnect the mass air sensor and temperature sensor connections.
- Reconnect the negative battery cable and start the engine to confirm proper operation.
WARNING: This product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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