CORRECTED - WRAPUP 3-CIT survival ensnared in regulatory battle

(Corrects economist's surname in 4th paragraph to "North" from "Brown")

* FDIC opposes CIT access to debt-guarantee program

* CIT discussing transfer of assets to CIT Bank

* Says transfers would enhance liquidity position

* Bonds, stocks fall sharply (Recasts headline, lead)

By Elinor Comlay and Karey Wutkowski

NEW YORK/WASHINGTON, July 13 (Reuters) - The survival of CIT Group Inc, a key source of financing for thousands of small and medium-sized companies, became ensnared in disagreements between regulators in Washington on Monday.

The Federal Deposit Insurance Corp, which insures deposits at U.S. banks, opposed an attempt by the Treasury Department and Federal Reserve to rescue the lender by granting it access to a government debt-guarantee program, according to a source familiar with the matter.

The prices of CIT shares and bonds tumbled as investors worried the commercial lender would not be able to meet its obligations to bondholders, perhaps pushing the company into bankruptcy and disrupting the financing on which its corporate customers depend.

CIT's difficulties are "going to make funding more expensive all around," said Dan North, chief economist for Euler Hermes, a unit of insurer Allianz SE.

The lender's failure would be the biggest collapse of a financial firm since regulators seized Washington Mutual Inc in September.

It is not the first time in recent months that there has been a disagreement between the FDIC and the Treasury and Federal Reserve. FDIC Chairman Sheila Bair, who is well-liked by key congressional leaders, and Treasury Secretary Timothy Geithner have battled over policy and turf, according to numerous reports.

FDIC is wary of granting CIT access to its debt program partly because it is not satisfied with the lender's collateral, the source said.

Unlike other government aid programs, the debt guarantee facility does not rely on taxpayer money. The FDIC would have to absorb any losses that result from the facility, and would have to recoup the funds by taxing the bank industry.

As a result, the Treasury and Fed are exploring other ways to provide relief to CIT, the source said, speaking anonymously because the government discussions have been private.

Speaking on a trip to Britain, Geithner said he was confident the government would be able to deal with CIT.