EXHIBIT 32.2

CERTIFICATION

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 on Form 10-Q of Northern Tier Energy LP (the “Partnership”) for the period ended June 30, 2015, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karen B. Davis, Executive Vice President and Chief Financial Officer of the general partner of Northern Tier Energy LP, hereby certify, to my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(i) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

Dated:	August 4, 2015	/s/ Karen B. Davis
		Karen B. Davis
		Executive Vice President and Chief Financial Officer of
		Northern Tier Energy GP LLC