Power Solutions International (PSIX) 10-Q 2012 Q2 Quarterly report

Exhibit 32.2

CERTIFICATION OF THE PRINCIPAL FINANCIAL AND ACCOUNTING OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Power Solutions International, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2012, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Daniel P. Gorey, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 14, 2012	/s/ Daniel P. Gorey
	Daniel P. Gorey
	Chief Financial Officer