20734268 Bearing Housing | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta water-pump bearing housing used on selected D12 and TAD12 engine families. The housing supports and aligns the water-pump shaft and bearings so the impeller can circulate coolant without excessive runout or seal loading.

⚙️ Key Features

• Genuine Volvo Penta water-pump bearing housing
• Supports the pump shaft and bearing set
• Maintains impeller and seal alignment
• Used across selected D12 marine and TAD12 industrial engines
• Housing selection must be confirmed by engine serial number
• Engine type: D12/TAD12 inline-six turbocharged diesel engine

🔌 Function

Locates the water-pump shaft and bearings, maintaining the alignment required for coolant circulation and reliable mechanical-seal operation.

⚠️ Common Signs of Failure

• Water-pump shaft play or noise
• Coolant leakage from the pump seal area
• Impeller contact or poor coolant circulation
• Repeated bearing or seal failure caused by housing wear

🛠️ Service Notes

• Clean and inspect the housing bore before assembly — scoring, ovality, discoloration or signs of a bearing having spun in the bore mean the housing must be replaced, not reused
• Press or draw bearings in squarely, supporting the housing properly and applying force to the housing and bearing race that is being fitted; never pull a bearing home using the shaft or the mounting fasteners
• Fit new seals and O-rings, and lubricate the bearing and seal lips with the grease or oil specified in the workshop manual for your engine before closing up
• Follow the manual's shimming, endfloat and preload procedure for the assembly rather than judging it by feel
• Turn the assembly by hand before it goes back into service; it should rotate smoothly with no roughness, tight spots or unexpected play

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20734268 → Supersedes 20431135 → Supersedes 8170833

OEM / Related Numbers

• 20431135 earlier number superseded by this part
• 8170833 earlier number superseded by this part
• 8170305 related reference

Other-Brand OEM Numbers

• Magneti Marelli: 352316171227 complete water-pump assembly
• Dayco: DP089 complete water-pump assembly

Aftermarket / Verified Equivalents

• PAI: 801133 complete water-pump kit
• DT Spare Parts: 21.5244 complete water-pump assembly
• Trucktec Automotive: 03.19.020 complete water-pump assembly
• KWP: 101332 complete water-pump assembly
• PE Automotive: 140.200-00A complete water-pump assembly
• Febi Bilstein: 22023 complete water-pump assembly
• Metelli: 24-1332 complete water-pump assembly
• OMP: 317.425 complete water-pump assembly
• Sampa: 33.168 complete water-pump assembly
• Auger: 57726 complete water-pump assembly
• GEBA: 60453 complete water-pump assembly
• Stellox: 81-04124-SX complete water-pump assembly
• GK: 980985 complete water-pump assembly
• LASO: 98200114 complete water-pump assembly
• Borg & Beck: BWP32684 complete water-pump assembly
• HEPU: P9913 complete water-pump assembly
• Graf: PA1332 complete water-pump assembly
• Dolz: V207 complete water-pump assembly

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging