Exhibit 32.1

CERTIFICATION

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

We, the undersigned Lynn L. Elsenhans, being, respectively, the Chairman and Chief Executive Officer and Brian P. MacDonald, being respectively, the Vice President and Chief Financial Officer, of Sunoco Partners LLC, the general partner of the registrant Sunoco Logistics Partners L.P., do each certify that the registrant’s Annual Report on Form 10-K for the year ended December 31, 2010 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in this annual report fairly presents, in all material respects, the financial condition and results of operations of Sunoco Logistics Partners L.P.

Date: February 23, 2011

/s/ LYNN L. ELSENHANS

Name: Lynn L. Elsenhans

Title: Chairman and Chief Executive Officer

Date: February 23, 2011

/s/ BRIAN P. MACDONALD

Name: Brian P. MacDonald

Title: Vice President and Chief Financial Officer

Date: February 23, 2011