VOLVO PENTA REPORTED THAT A NUMBER OF RETURNED (UNDER WARRANTY) HOLLEY CARBURETORS SHOWED EVIDENCE OF CORROSION INSIDE FUEL BOWL AND/OR ON METERING BLOCK & MAY RESULT IN A FIRE AND/OR EXPLOSION HAZARD DUE TO FUEL LEAKING IF IGNITION SOURCE IS PRESENT. REQUIRES INSPECT AND REPLACE DEFECTIVE CARBURETORS. DNR DATED 11/21/07 - MODELS 3.0 L, 4.3 L & 5.0 L SERIAL NUMBERS RANGING FROM 4012177265 THROUGH 4012204622. IF DATE CODE MARKED ON CARBURETOR IS BETWEE 3355 (DEC 1, 2005) AND 2436 (AUG 31, 2006) CARBURETOR MUST BE REPLACED, SEE VOLVO PENTA SERVICE BULLETIN 23-1 19 01. CUR 1 RECVD - 262 CORRECTED. CUR 2 RECVD - 720 CORRECTED, 325 W/O PROBLEM. CUR 3 RECVD - 1948 CORRECTED, 672 W/O PROBLEM.