EXHIBIT 32.2


                   CERTIFICATION PURSUANT TO 18 U.S.C. & 1350

    I, Richard J. Dobbyn, the Chief Financial Officer of Sun Hydraulics
Corporation (the "Company"), certify that (i) the Quarterly Report on Form 10-Q
for the Company for the quarter ended June 26, 2004 (the "Report"), fully
complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 and (ii) the information contained in the Report fairly
presents, in all material respects, the financial condition and results of
operations of the Company.


/s/ Richard J. Dobbyn
________________________
Chief Financial Officer
August 9, 2004