The United Auto Workers, parting company with the AFL-CIO, has urged President Carter to continue United States participation in the controversial International Labor Organization.

The United States served notice on the United Nations labor agency two years ago that it would pull out unless the ILO stopped taking what Americans representatives have described as politically loaded stands favorable to Communist and Third World countries.

The Carter administration renewed the warning this year, and a Cabinet-level meeting has been tentatively scheduled for Aug. 16 to recommend a position on the issue, which has reportedly stirred considerable interest among trade union movements abroad, which are pressing for continued U.S. participation.

The AFL-CIO, which does not include the UAW - although the auto union is considering reaffiliation - endorsed the U.S. pullout warning last year and favors withdrawal now, said federation spokesman Albert J. Zack.

In a letter to Carter that was released yesterday, UAW President Douglas A. Fraser said he is "distressed by the increased drift toward unconstructive politicization of the ILO," including its condemnation of Israel without investigation charges against it.

But Fraser said he believes the 58-year-old organization "has a significant role to play in the struggle of workers for human rights" and added that "withdrawal will provide those with whom we strongly disagree an unobstructed path down which they will carry their effort to expand their influence, particularly in developing countries."

ILO officials have said that a withdrawal by the United States, which provides 25 per cent of the organization's budget, would cause a cutback in programs and a change "in a lot of our methods and thinking," but that the ILO could go on without the U.S. funding.

Foreign policy differences between the AFL-CIO and UAW have been a source of friction in the past, contributing to the auto union's withdrawal from the federation nine years ago. But sources in both groups indicated the current dispute was unlikely to affect reaffiliation talks, which are expected to come to a head this fall or winter.