Exhibit 31.4
CERTIFICATION PURSUANT TO 17 CFR 240.13a-14 PROMULGATED
UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Xun Li certify that:
| 1. | I have reviewed this Amendment No. 1 to the annual report on Form 10-K of Power Solutions International, Inc. |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Date: April 30, 2026 | By: | /s/ Xun Li | ||||
| Name: | Xun Li | |||||
| Title: | Chief Financial Officer |