Washington, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934


                                 Date of Report
                                (Date of earliest
                         event reported): April 15, 2003

                             A. O. Smith Corporation

             (Exact name of registrant as specified in its charter)

    Delaware                          1-475                      39-0619790
----------------                    ---------                 -----------------
 (State or other                (Commission File                (IRS Employer
 jurisdiction of                     Number)                 Identification No.)

                P.O. Box 245008, Milwaukee, Wisconsin 53224-9508
          (Address of principal executive offices, including zip code)

                                 (414) 359-4000
                         (Registrant's telephone number)


Item 7.  Financial Statements and Exhibits

(a) Not applicable.

(b) Not applicable.

(c) Exhibits. The following exhibit is being filed herewith:

(99) Press Release of A. O. Smith Corporation, dated April 15, 2003.

Item 9. Regulation FD Disclosures. (Information is being provided under Item

On April 15, 2003, A. O. Smith Corporation ("the Company") issued a press
release announcing the Company's results for the quarter ended March 31, 2003
and its earnings outlook for 2003. A copy of the Company's press release is
attached as Exhibit 99 to this Current Report on Form 8-K (this "Current
Report") and is incorporated by reference herein.


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                             A. O. Smith Corporation

Date:  April 15, 2003                       By: /s/ Kenneth W. Krueger

                                            Kenneth W. Krueger
                                            Senior Vice President and
                                            Chief Financial Officer

                             A. O. Smith Corporation

Exhibit Index to Current Report on Form 8-K Dated April 15, 2003

Number           Description
------           -----------

(99)             Press Release of A. O. Smith Corporation dated April 15, 2003.