How to Install K&N Series 57 FIPK Cold Air Intake on your Sierra

2. Disconnect the mass air sensor electrical connection.

3. Lift up on the front of the engine cover to diengage from the mounting grommets. Then pull forward and remove the engine cover from the engine as shown.

4. Unhook the radiator hose mount from the intake tube.

5. Disconnect crankcase vent hose from the valve cover as shown.

6. Loosen the hose clamps, which secure stock intake tube to the throttle body and mass air sensor and then remove the intake tube from the vehicle.

7. Pull firmly upwards to release the air cleaner assembly from the mounting tray grommets, and then remove the assembly as shown. NOTE: K&N Engineering, Inc., recommends that customers do not discard factory air intake.

8. Loosen the hose clamp and remove the mass air sensor from the air cleaner as shown.

9. Install the filter adapter onto the heat shield and secure with the provided hardware.

10. Install the “L” bracket (010031) onto the heat shield with the provided hardware as shown.

11. Remove the two airbox mounting grommets shown.

NOTE: Some vehicles may not be equipped with the front grommet and hole. Go to step #11a.

11a. On vehicles that are not equipped with the front airbox mounting grommet and hole, install the heat shield assembly as shown. Then, use a marker to mark the mounting plate through the heat shield mounting hole.

11b. Remove the heat shield assembly and drill a 5/8” hole through the marked location from step #11a.

12. Install the two 5/16” inserted nuts into the airbox mounting tray as shown.

13. Install the heat shield assembly onto the airbox mounting tray and secure to the 5/16” inserted nuts with the provided hardware as shown.

14. Secure the heat shield mounting bracket to the inner fender with the fender washers and hardware as shown.

15. Install the silicone hose (08618) onto the filter adapter and secure with the provided hose clamp.

16. Install the silicone (08631) hose onto the throttle body and secure with the provided hose clamp.

17. Install the mass air sensor assembly into the silicone hose on the filter adapter and secure with provided hose clamp.

18. Install the NPT 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 turn with a wrench.

19. Install the “L” bracket (070812) onto the K&N® intake tube with the provided harware as shown.

20. Install the silicone hump hose (08543) onto the K&N® intake tube and secure with the provided hose clamp as shown.

21. Install the K&N® intake tube into the silicone hose at the throttle body and mass air sensor and secure with the provided hose clamps.

22. Install the upper radiator hose mount onto the mounting bracket installed onto the K&N® intake tube and secure with the provided tie wrap as shown.

23. Install the provided crankcase vent hose onto the valve cover and then onto the K&N® intake tube as shown.

24. Install the K&N® air filter as shown and secure with the provided hose clamp.

NOTE: Drycharger® air filter wrap; part # RF-1042DK is available to purchase separately. To learn more about Drycharger® filter wraps or look up color availability please visit http://www.knfilters.com®.

25. Install the provided edge trim onto the filter cover as shown.

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

26. Install the filter cover onto the heat shield and secure with the provided hardware.

27. Re-install the engine cover removed in step #3.

28. Reconnect the mass air sensor electrical connection.

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 that an 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. NOTE: Most General Motors vehicles have the Vehicle Emissions Certification Information (VECI) label affixed to the air filter box. In order to be compliant with California emissions laws, the label MUST remain in the engine compartment. If the Vehicle Emission Control Information label is removed during modification, a new replacement label must be obtained and installed in a readily visible position in the engine compartment. The label shall not be affixed to any equipment which is easily detached from the vehicle. We recommend that the label is affixed to the underside of the hood adjacent to the hood latch. The label is Vehicle Identification Number dependent and can be ordered from the vehicle dealership. In order to receive the proper decal please bring your VIN with you. Failure to have the VECI under the hood may result in failure of a pre-registration smog test.

32. 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.