Bolt Size to Install a Trailer Hitch on a 2004 Toyota Corolla

Updated 11/04/2014 | Published 11/03/2014

Products Featured in This Question

Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4"

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1-7/8" Hitch Ball - 3/4" Diameter x 1-9/16" Long Shank - Chrome - 2,000 lbs

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2" Hitch Ball - 3/4" Diameter x 1-9/16" Long Shank - Chrome - 3,500 lbs

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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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Curt Class II Drawbar - 2-5/8" Rise, 3-1/4" Drop - 7-1/4" Long - 3,500 lbs

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Question:

bolt sizefor chassis2004 corolla

asked by: Al

Expert Reply:

The weldnuts in the frame for your 2004 Toyota Corolla to install a trailer hitch are M12 nuts. The bolts used to install a hitch, # C11265 as an example, are M12-1.25 x 30mm grade 5.

It is recommended to clean out the weldnuts prior to installing the hitch. Road grime and corrosion can get compacted in the threads and you would not be able to thread in the bolts without first cleaning the weldnuts. I have included some links to the right that should help.

If you plan on doing some towing the correct ball mount is # C45521. For a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. For trailer wiring use # 55542.