K&N Engineering HA-4503 Installation Instructions

PART NUMBER:   HA-4503

This filter fits:

HONDA CRF450

Congratulations, you have purchased the finest air filter that money can buy. With proper care, this filter can last many

seasons. This filter can be used in a stock machine, with no modifications required. However if any engine modifications

have been mode tuning/jetting adjustments may required.

However the following procedure MUST be followed to ensure a proper fit and seal of the K&N Filtercharger®.

1) Remove OE air filter according to your owners manual.

2) Clean all sealing surfaces of the air box.

3) Using the supplied grease, apply a liberal amount of grease between the bump seals on the base of the air filter. 

Fig. 1.

4) Install air filter into the air box.

NOTE: To fit air filter between frame, gently squeeze air filter to fit. Not a lot of pressure will be required. Use caution

when doing this, as damage to air filter may occur.

5) Using the supplied grease, apply grease to the sealing surface of the X-Stream top. Fig. 2.

5) Add rubber and steel washer to the stock wing bolt. Steel washer should be on top of rubber washer. Fig. 3.

7) Install wing bolt and X-Stream top onto air filter

NOTE: For proper fitment you may need to start the wing bolt before seating X-Stream top onto filter. Fig. 4.

8) Tighten wing bolt.

THESE INSTRUCTIONS MUST BE FOLLOWED EVERY TIME THE FILTER IS SERVICED,

OTHERWISE THE FILTER MAY NOT SEAL, AND DAMAGE TO THE ENGINE COULD RESULT.

FIG. 1

FIG. 2

FIG. 3

FIG. 4

• 1455 CITRUS AVE., P.O. BOX 1329, RIVERSIDE, CA., U.S.A. 92502   • TECH SERVICE 800-858-3333   • FAX 909-684-9060

• e-mail: tech@knfilters.com   •  WWW: http://www.knfilters.com

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11/18/04

Installation Instructions