20718731 Yoke | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Cylinder-Block / Frame Yoke - Part Number: 20718731

Structural yoke used in the D9 cylinder-block and lower-frame assembly. It forms part of the block/frame retention and alignment hardware rather than a driveline universal-joint yoke.

⚙️ Key Features

• OEM geometry for the D9 cylinder-block and frame assembly

• Supports correct location or retention of the mating block/frame component

• Designed for combustion load, vibration and thermal movement

• Used with the original cylinder block, frame and locating hardware

• Direct replacement for a cracked, distorted or worn original yoke

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20718731 (OEM catalogue reference)

OEM / Related Numbers:

• 24426731; 21170630; 21236687 cylinder-block references

• 20575260 lower frame

• 21644471; 21644617; 21971224 frame-reinforcement references

• 20485996 and 950588 locating pins

• 8131145 guide sleeve

• 1547040 flange screws

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• D9 cylinder-block, lower-frame and structural-engine assembly

Typically suits:

• Engine models:

• D9A2A D9-425; D9A2A D9-500; D9A2A D9-575; D9A2A D9A-MG; TAD940GE; TAD940VE; TAD941GE; TAD941VE; TAD942VE; TAD943VE; TAD950VE; TAD951VE; TAD952VE

• HP Range: Approximately 300-575 HP, depending on engine rating

• Engine Type: 9.4 L six-cylinder turbocharged/aftercooled diesel

• Year Range: Approximately 2000s-2010s

🔌 Function

Provides structural retention or location between the cylinder block and its lower frame, helping maintain alignment under combustion and crankshaft loading.

Common signs of failure:

• Cracking, distortion or fretting at the yoke contact surfaces

• Loose or repeatedly loosening frame/block fasteners

• Misalignment between the cylinder block and lower frame

• Abnormal vibration or movement at the structural joint

• Uneven wear around locating pins or mounting faces

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging