Part number

Application

Description

     Weight

Loss

10-725-105

1300

1600

engines with original gearbox

105 tooth ring gear. this FW converts 1300-1600 cars to 215mm 2.0 Sachs clutch set up.  Requires special release bearing.

18

23

7.2

10.6

  12.8

10-725-110

1750

engines with original gearbox

110 tooth ring gear required for use in 1750 cars already using 215mm Sachs clutch.

Both use 1600 or 1750 starters.

21.5

 7.2

 14.3

20-725-105

all 2000

engines fitted with 1300/1600 gearboxes

105 tooth ring gear is needed to install 2.0 engine in car with 1300 or 1600 gearbox floor pedals and cable operated release bearing. . Converts clutch setup to the standard 215mm Sachs clutch set. Requires special release bearing.  Use 1600 or 1750 starter.

21.5

 7.2

14.3

20-725-130L

all 2000

engines with 2000/1750 hydraulic release bell housings

130 tooth (large ID, light weight from 1990-94 spider) ring gear .  Requires starter from 72-74 or 90-94. Uses standard 215mm Sachs clutch set

21.5

6.1

15.4