Ref.

  P/N
  CONNECTING COMPONENTS REVERSE GEAR VOLVO PENTA 3.49:1 RATIO BB115A, BB115B, BB115C, MB20A, MB20B, MB20C
DESCRIPTION
1      Reverse-red gear, N.S.S.
-      ...Components, see group 4B
2      Carrier (2)
3   955675-4   ...Screw
4   942336-9   ...Washer
5   907599-5   ...Pin
6      Flywheel casing
7      Gasket
8   940160-5   Screw Length 38MM
-   970972-6   Screw Length 40MM
9   955550-9   Screw Length 51MM
-   955344-7   Screw Length 50MM
10   940184-5   Screw Length 95MM
--   970982-5   Screw, N.S.S. Length 100MM
11   941909-4   Washer, internal diameter = 11.5MM
--   940280-1   Washer, internal diameter = 13.5MM
12   955525-1   Screw Length 25MM
13   940186-0   Screw Length 38MM
14   941907-8   Washer
15   853893-6   Gasket
16   955535-0   Screw Length 32MM
17   955540-0   Screw Length 70MM
18   942336-9   Washer
19      Operating handle
20      Handle
21   828693-2   Hose connection, see group 2B
22   804426-5   Hose connection, up to 59517
--   827937-4   Hose connection, from 59518
23      Hose connection
24      Pipe
25   952969-4   Hose, Length 50MM
26   943472-1   Clamp (951788)
27   819153-8   Rubber coupling, see group 9
28      Cooling water intake, see group 9
       N.S.S. = Not Sold Separately
       ERF = Order as required state, length, etc.
       (2) Drilled 35mm