A former District police officer who has already had two coronary bypass operations and was given only days to live received a new heart early yesterday in the second heart transplantation performed in the District in less than a week.

Last night, Willard Kuntz, 48, of Laurel was in stable condition after the four-hour operation at the Washington Hospital Center.

Kuntz had been waiting for a heart since April 8, but when he went into severe heart failure on Friday, he was given a top-level priority on the regional waiting list for hearts, according to a hospital spokeswoman.

Yesterday he received the new organ from an unidentified donor who died at Prince George's General Hospital.

This was the second heart transplant operation performed in the city under the auspices of the new Washington Regional Heart Transplant Consortium.

On Friday, Paul Fisher, 37, a District man, received a heart at the hospital center. He was in stable condition yesterday.

The surgical team for both procedures was led by Dr. John A. Macoviak, chief of heart transplantation at the hospital center. Also participating in yesterday's operation were Dr. Paul Corso of the hospital center, Dr. Benjamin Aaron, chairman of cardiovascular surgery at George Washington University Medical Center, and Dr. Robert Lowery, a cardiovascular surgeon at Howard University.

In an effort to foster proficiency in heart transplantation, surgeons from consortium hospitals will take turns observing and assisting in the operations.