12B4 Marine Engine Damper Drive Plate from R&D Marine

Fitted between the boat engine and the gearbox input shaft, a damper drive plate is designed to transmit the engine power to the gearbox, whilst reducing transmitted gear noise and providing a cushioned drive when selecting gear. All R and D Damper Drive plates include a 'failsafe' design.

Also called the Driven Plate, Damper Plate or Clutch Plate, the 12B4 Damper Drive Plate is from the R and D Loop element range. Common applications for the 12B4 drive plate include BMC, Ford and Perkins engines which have a flywheel with the 6.125" diameter fixings aperture.

The technical details:
Spline: 17 teeth 24/48DP (19.7mm diameter) for Newage PRM Delta gearbox.
Diameter of drive plate back plate which bolts to the engine flywheel: 155.45 mm 6.125"
Back plate fixing holes: The small back plate has 5 x 6.35mm holes (0.25") on 142mm PCD (5.593). This was a very common fixing arrangement for BMC, Leyland, Thornycroft and Perkins engines
Drive plate maximum thickness: 32mm (1.25")
Fitted with a type B loop element for 135Nm 100 ft lb torque, which can be mounted either round on the flywheel and rotated in either direction. This drive plate element will provide linear stiffness up to 3 degrees of deflection and is failsafe.

Drive plate 12B4 can replace PRM plate MT3064, R&D PLATE 12W16