Tenneco (TEN) 10-Q 2011 Q2 Quarterly report

EXHIBIT 15.1

August 5, 2011

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Commissioners:

We are aware that our report dated August 5, 2011 on our review of interim financial information of Tenneco Inc. for the periods ended June 30, 2011 and 2010 and included in the Company’s quarterly report onForm 10-Q for the quarter ended June 30, 2011 is incorporated by reference in Registration Statement Nos.333-17485,333-30933,333-17487,333-41535,333-27279,333-23249,333-27281,333-41537,333-48777,333-76261,333-33442,333-33934,333-58056,333-101973,333-113705,333-142475,333-142473 and333-159358 onForm S-8 and Registration Statement Nos.333-24291 and333-159305 onForm S-3.

Very truly yours,

/s/PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Chicago, Illinois