3856925 3852656 Volvo Housing & Gasket | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta GM Rear Crankshaft Oil Seal Housing and Gasket - Part Numbers: 3856925 and 3852656

A genuine used rear crankshaft-seal housing supplied with the corresponding housing gasket for selected GM-based Volvo Penta and OMC petrol marine engines.

Housing 3856925 supports the rear main oil seal around the crankshaft, while gasket 3852656 seals the housing to the rear of the engine block. Volvo and OMC catalogues describe 3856925 as the rear crankshaft-seal retainer.

⚙️ Key Features

• Genuine Volvo Penta rear oil-seal housing

• Includes matching gasket 3852656

• Correct housing reference 3856925

• Supports rear crankshaft seal 3856926

• Suits selected GM V6 and V8 marine engines

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3856925 rear crankshaft-seal housing / retainer

• 3852656 matching housing gasket

OEM / Related Numbers:

• Housing: 3856925

• Gasket: 3852656

• Rear crankshaft seal: 3856926

• Housing studs: 3853202 and 3853205

• Housing nuts: 3853206

• Housing bolts: 3853203 and 3853204

• Crankshaft: 3856923 on specified engines

• Flywheel: 3853958 on compatible engines

Aftermarket / Verified Equivalents:

• No verified aftermarket housing equivalent

• Automotive rear-main-seal housing gaskets may exist, but must be matched by engine casting and seal design rather than number alone

🚤 Compatibility

Commonly used on:

• Volvo Penta and OMC GM crankcases

• One-piece rear-main-seal V6 and V8 engines

• Rear crankshaft and flywheel assemblies

Typically suits:

• Engine models:

• Volvo Penta 4.3L GM V6 applications using housing 3856925

• Volvo Penta 5.0GL and 5.0Gi

• Volvo Penta 5.0GXi

• Volvo Penta 5.7GL and 5.7Gi

• Volvo Penta 5.7GSi and 5.7GXi

• OMC 5.0L sterndrive engines

• OMC 5.7L sterndrive engines

• Engines whose crankcase diagram specifies housing 3856925 and gasket 3852656

• HP Range: Engine-output dependent

• Engine Type: GM 4.3L V6 and 5.0L / 5.7L V8 petrol marine engine

• Year Range: Primarily 1990s and early-2000s production

🔌 Function

The housing supports the rear crankshaft oil seal and keeps it concentric with the crankshaft. The gasket seals the housing-to-block joint against engine-oil leakage.

Common signs of failure:

• Engine oil leaks from the flywheel area

• Oil contaminates the engine coupler

• Rear-main seal repeatedly fails

• Housing is cracked or distorted

• Seal bore is worn or corroded

• Gasket leaks between the housing and block

• Flywheel and bell housing become oil-soaked

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated