Operator
Good day and welcome to the Tenneco Inc. First Quarter 2021 Earnings Conference Call and Webcast. [Operator Instructions]
I will now like to turn the conference coverage to Ms. Linae Golla, Vice President, Investor Relations. Ms. Golla, the floor is yours, ma am.
Linae Golla
Vice President, Investor Relations
Thank you, and good morning. Earlier today, we released our first quarter 2021 earnings results and related financial information. A presentation corresponding to our prepared remarks is available on the investor section of our website. Please be aware that our discussion today will include information on non-GAAP financial measures. All of which are reconciled with GAAP measures in our press release attachments and other earnings materials. When we say EBITDA, it means adjusted EBITDA. Unless specifically described otherwise margin refers to the value add adjusted EBITDA margin. The earnings release, and other earnings materials are available on our website. Ad