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Boat Damper Drive Plate 2B4 for Borgwarner 70, 71, 72 , 73

R&D Drive Plate | 26 Teeth Spline | Borgwarner | 155.45mm Diameter

Part No. RND-2B4

58.52 You pay £70.22 Incl VAT You pay £58.52 Excl VAT

RRP £75.91 £63.26

Save £5.69 (7.5%) Save £4.74 (7.5%)

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Overview
Brand R&D Marine
Country of Origin United Kingdom
Element Loop
Suitability Borgwarner 70, 71, 72 & 73 gearboxes, PRM Inline gearboxes, Paragon P series, Techodrive TN 90, 170, 260, 345, 485, 545 & 880 gearboxes, TMP 1200 & 1500, Twin Disc 501 & 502 gearboxes, some Volvo saildrives, ZF IRM & Hurth HBW 250 & HSW gearboxes.
Gearbox Spline 26 teeth 20/40 DP (35.4mm diameter)
Diameter OD: 155.45mm (6.125")
Torque 135 Nm, 100 lbft
Bolt Hole PCD (Pitch Circle Diameter) 5 x 6.35mm holes (0.25") on 142mm PCD (5.593).
Number of Fixing Holes 5
Thickness Maximum: 32mm (1.25")
Replaces Borgwarner Velvet Drive Damper Plates: 10-04-650-002 (1004-650-002), 10-04-650-402 (1004-650-002), AS1-K1C (AS1K1C), AS12-K1C (AS12K1C), AS4-K1C (AS4K1C)
Description

2B4 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 2B4 Damper Drive Plate is from the R and D Loop element range. Common applications for the 2B4 drive plate include BMC, Ford and Perkins engines which have a flywheel with the 6.125" diameter fixings aperture.

The technical details:
Spline: 26 teeth 20/40 DP (35.4mm diameter) for Borgwarner 70, 71, 72 & 73 gearboxes, PRM Inline gearboxes, Paragon P series, Technodrive TN90, 170, 260, 345, 485, 545 & 880 gearboxes, TMP 1200 & 1500, Twin Disc 501 & 502 gearboxes, some Volvo saildrive ZF IRM & Hurth HBW 250 and HSW gearboxes.
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 ftlb 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 2B4 can usually be used to replace the following Borgwarner Velvet Drive damper plates
10-04-650-002 ( 1004-650-002 )
10-04-650-402 ( 1004-650-002 )
AS1-K1C ( AS1K1C )
AS12-K1C ( AS12K1C )
AS4-K1C ( AS4K1C )

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