3856522 Housing | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta housing from the Marine Propulsion group, weighing 6.236 kg and listed for 1 application on the DPX series. It supersedes part number 872921, catalogued earlier as an intermediate housing.

🚤 Compatibility

Typically suits:

• Volvo Penta DPX-R

• Engine Family: DPX

⚙️ Key Features

• 6.236 kg — a heavy casting
• 1 application on the DPX series
• Supersedes 872921, catalogued earlier as an intermediate housing

🔌 Function

Forms the machined casing that carries and aligns the shafts, bearings and seals fitted inside it, and holds the joint faces to the units either side.

⚠️ Common Signs of Failure

• Oil weeping from a joint face or seal bore
• Bearing bores worn, stepped or spun
• Casting cracked or corroded, especially around the fixings
• Noise or vibration from bearings running out of line
• Fixing threads pulled or stripped

🛠️ Service Notes

• Renew every seal, O-ring and gasket in the housing when it is changed — the labour is the same either way
• Check the bearings and shafts before transferring them into a new housing
• At 6.2 kg it wants supporting while the fixings are started

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3856522 → Supersedes 872921

OEM / Related Numbers

• 872921 earlier number superseded by this part

📦 Condition

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