UNITED ~~STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549~~STATES

~~Form~~SECURITIES ~~6-K~~AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2026

Commission File Number: 001-34152

WESTPORT FUEL SYSTEMS INC.~~(Translation of registrant's name into English)~~

~~1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2~~(~~Address~~Translation of ~~principal~~registrant's ~~executive~~name ~~office~~into English)

~~Indicate~~1691 byWest ~~check~~75th ~~mark~~Avenue, ~~whether~~Vancouver, ~~the~~British ~~registrant~~Columbia, Canada, ~~files~~V6P ~~or will file annual reports under cover of Form 20-F or Form 40-F.Form 20-F [ X ] Form 40-F [ ]~~6P2

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [ X ]   Form 40-F [ ]

INCORPORATION BY REFERENCE

Exhibit 99.1 to this Form 6-K is hereby incorporated by reference into the Company's Registration Statement on Form F-3 (File No.333-289669) and the Registration ~~Statement~~Statements on Form S-8, as amended (Registration NoNos.333-248912, 333-211726 and 333-168847).

OnEXHIBIT ~~March 20, 2026, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. (c) Exhibit 99.1. Press release dated March 20, 2026~~INDEX

Exhibits	Descriptions

99.1	Material Change Report

SIGNATURES

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, thereunto duly authorized.

		WESTPORT FUEL SYSTEMS INC.
	Westport Fuel Systems Inc.
	(Registrant)	~~(Registrant)~~
Date: March 20, 2026		/s/ Elizabeth Owens
Date: March 27, 2026	/s/ Elizabeth Owens
	Elizabeth Owens	~~Elizabeth Owens~~
	Chief Financial Officer	~~Chief Financial Officer~~

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