Description
Product Description
Flexplate (or flex plate) is a metal disk that connects the output from an engine to the input of a torque converter in a car equipped with an automatic transmission. It takes the place of the flywheel found in a conventional manual transmission setup. The name refers to the ability of the disk to flex across its main axis – bending side to side – to take up motion in the torque converter as rotational speeds change.
Flexplates are generally much thinner and lighter than flywheels due to the smooth coupling action of the torque converter and the elimination of the clutch surface. Like flywheels, flexplates normally handle coupling to the starter motor, via teeth cut along the outer edge of the plate. These teeth give the flexplate a gear-like appearance, despite this being a secondary function.
- Make sure to inspect your flexplate when replacing your transmission.
- OEM Part Number
3918959
- Replacement for Following Models
Transmission: Alli-son AT545 Transmission
Cu-mm-ins Engines: B Series ISB 3.9 5.9 6.7
- Mounting diameter for Ø13 eight holes : 110mm
- Outer Diameter for 8 mounting holes: 13mm
- Welding 12 places x40mm length
Specifications:
| Number of Teeth | 159 |
| Outer Diameter | 407.3mm / 16in |
| Root Circle Diameter | 397.7mm / 15.65in |
| Width of center | 3mm / 0.11 in |
| Width of gear section | 14.50mm / 0.57 in |
| Inner Diameter of Plate | 70.10mm / 2.76 in |
| Diameter for 6 holes location | 346mm / 13.62 in |
| Six holes Inner Diameter | 11.20mm |
| Six holes location angle | 60° |
| Back side teeth cut | 1.5×45° |
| Eight hole Ø13 angle location | 45° |
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