How to Install K&N Series 77 High Flow Performance Cold Air Intake on your Dodge Ram

2. Release the red locking tab and then disconnect the inlet air temperature electrical connection.

3. Loosen the hose clamp that secures the intake tube to the throttle body.

4. Disconnect the crank case vent hose from the air box.

5. Disconnect the factory intake hose from the throttle body, then lift up the air box assembly and remove it from the vehicle.

NOTE: K&N Engineering, Inc., recommends that customers do not discard factory air intake.

6. Lift up the engine cover to dislodge it from the mounting posts and then remove it from the vehicle.

7. Disconnect the crank case vent hose from the valve cover port.

8. Measure 11” from the air filter end of the crank case vent tube and then trim the crank case vent tube as shown.

9. Install the provided vent hose onto the cut hose with the provided hose clamps as shown.

10. Install the crank case vent assembly onto the valve cover port.

11. Reinstall the engine cover onto the mounting studs and route the crank case vent hose through the opening.

11a. Some vehicles may have an AC line obstructing installation. Choose the appropriate heat shield wall for the AC line configuration and attach to the heat shield as shown using the provided hardware.

12. Install the provided edge trim onto the heat shield as shown.

NOTE: Some trimming of the edge trim will be necessary.

13. Install the provided filter adapter onto the heat shield as shown and secure with the provided hardware.

14. Install the silicone hump hose (08418) onto the filter adapter and secure with the provided hose clamp.

15. Install the heat shield mounting bracket (083127) onto the heat shield using the provided hardware.

NOTE: Do not completely tighten at this time.

16. Install the heat shield mounting bracket (083103-1) onto the heat shield using the provided hardware.

NOTE: Do not completely tighten at this time.

NOTE: When using the cut out heat shield wall, place the provided spacer between the bracket and heat shield and use the longer bolt.

17. Remove the front air box mounting bracket bolt shown.

NOTE: This bolt will used in a later step.

18. Remove the front fender mounting bolt shown.

NOTE: This bolt will used in a later step.

19. Install the heat shield assembly into the vehicle and secure with the bolts removed in steps #17 and 18. Do not completely tighten at this time.

20. Install the provided silicone hose (084086) onto the throttle body and secure with the provided hose clamp.

21. Install the provided grommet into the K&N® intake tube as shown.

22. Install the 1/4 npt vent fitting into the K&N® intake tube as shown.

NOTE: Plastic NPT fittings are easy to cross thread. Install the vent fitting “hand” tight, then turn it two complete turns with a wrench.

23. Remove the inlet air temperature sensor from the stock intake tube.

NOTE: Use care removing the sensor as it is very fragile.

24. Install the inlet air temperature sensor into the grommet installed into the K&N® intake tube as shown.

NOTE: Use care while installing the inlet air temperature sensor as it is very fragile.

25. Install the K&N® intake tube into the silicone hump hose and then into the silicone hose attached to the throttle body. Align the heat shield assembly for proper fitment. Tighten the heat shield mounting bolts and hose clamps securing the intake tube.

26. Connect the crank case vent hose to the fitting installed into the K&N® intake tube and secure with the provided hose clamp.

NOTE: Some trimming of the vent hose will be necessary.

NOTE: If the vent hose kinks, use the provided 90º fitting and additional hose clamps to route the hose free of kinks.

27. Connect the provided inlet temperature sensor extension into the factory wiring harness and then connect the other end to the inlet temperature sensor.

NOTE: The vehicle manufacturer uses two different inlet air temperature sensor connections, choose the correct extension harness for the sensor provided by the manufacturer. Secure the harness with the provided tie wrap.

28. Install the K&N® air filter and secure with the provided hose clamp.

29. Reconnect the vehicle’s negative battery cable. Double check to make sure everything is tight and properly positioned before starting the vehicle.

30. The C.A.R.B. exemption sticker, (attached), must be visible under the hood, so the emissions inspector can see it when the vehicle is required to be tested for emissions. California requires testing every two years, other states may vary.

31. It will be necessary for all K&N® high flow intake systems to be checked periodically for realignment, clearance and tightening of all connections. Failure to follow the above instructions or proper maintenance may void warranty.