LUFKIN, Texas, Apr. 6 --

Lufkin Industries, Inc. (Nasdaq: LUFK) today announced that it plans to release its 2005 first quarter financial results before opening of trading on Wednesday, April 20, 2005. The same morning at 9:00 a.m. (central time), the Company will hold a conference call to discuss its 2005 first quarter results. To listen to the call, participants should dial (913) 981-5532 approximately 10 minutes prior to the start of the call. A telephonic replay will be available from 11:00 a.m. (central time) April 20, 2005, through 7:00 p.m. (central time) April 27, 2005, by dialing (719) 457-0820 and entering reservation number 4245756.

Lufkin Industries, Inc. sells and services power transmission products, oil field pumping units, foundry castings and highway trailers throughout the world. The Company has vertically integrated all vital technologies required to design, manufacture and market its products.

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Contact:

Lufkin Industries Inc., Lufkin
R.D. Leslie, 936/637-5325