DETERMINE WHICH TRIM HOSE FITS YOUR  MERCRUISER

1) Start BY KNOWING WHICH OUT DRIVE YOU HAVE

2) UNITS OLDER THAN MIDDLE 1960 S WITH ONE HOSE TO EACH RAM ARE VERY OLD AND HARD TO FIND

3) UNITS FROM LATE 1960 S TO 1772 ARE #1 A-B-C  AND HAVE OLD 4 DIFFERENT HOSES SOME ARE AVAILABLE.

4) UNITS FROM 1972 - 1985 ARE #1 UNITS THEY TAKE FOUR SAME IM706 HOSES

5) UNITS OF 1986 ONLY HAVE 2EA  IM700 HOSES AND THE FIRST OUTSIDE RETURN HOSES WITH 90 DEG BEND ON REAR ENTRY. LONG RETURN HOSES ARE HARD TO FIND 700 HOSES ARE NO PROBLEM(THE EASY TO DETERMINE THESE RAMS, BECAUSE IS THE CAP WHERE THE S.S. RAM COMES OUT HAVE A 6 SIDED WRENCH FITTING.

6) AFTER 1986 ALPHA RAMS USE 2 IM700 PLUS 2 OUTSIDE LINES WITH 45 DEG REAR ENTRY BEND.

7) ALPHA GEN I AND GEN II USE 2 IM700 SHORT HOSES PLUS 2 OUTSIDE 45 DEG HOSES HOWEVER THERE ARE TWO LENGTHS.
 
8) MEASURING STARTS FROM THE  RIGID TUBE COMES ALONG THE SIDE AND TURNS BACK TO THE NUT WHERE IT ATTACHES. THERE ARE 2 LENGTHS.

9) THE SHORTER HOSE MEASUREMENT IS 10-5/8 TO NUT OR 11-1/4 TO TIP. AND FITS CYLINDERS WITH CAST NUMBERS 98703 OR 98704 THE 15-9/16 HOUSING WITH 11610 CAP 1.890" WITHOUT SHOULDER. ORDER IM902US

10) THE LONGER HOSE MEASUREMENT IS 11-1/8 TO NUT OR 11-3/4 TO TIP AND FITS CYLINDERS WITH CAST NUMBERS 14034 OR 140355 THE 16-3/16 HOUSING WITH 11620 CAP 2.080"  WITH SHOULDER .ORDER IM902UL

11) THE ALPHA GEN II USES THE LONGER HOSES.

12) THE INSIDE HOSES FOR #1 DRIVES COME IN 19" ORDER IM703,   29" ORDER IM702   AND 44".ORDER IM704