3853958 Volvo Flywheel | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta GM 14-Inch 168-Tooth Flywheel - Part Number: 3853958

A genuine used Volvo Penta flywheel for selected GM-based 4.3L V6 and 5.0L / 5.7L V8 petrol marine engines fitted with a one-piece rear main seal.

The flywheel has a 14-inch diameter and 168 starter teeth and is associated with GM casting 12557590N. It is the Volvo Penta equivalent of the MerCruiser 8M0047213 / 9520001 flywheel family.

⚙️ Key Features

• Genuine Volvo Penta GM flywheel
• 14-inch outside diameter
• 168-tooth starter ring gear
• Suits one-piece rear-main-seal engines
• Compatible with selected Volvo Penta V6 and V8 petrol engines

🚤 Compatibility

Commonly used on

• Volvo Penta SX and DPS sterndrive engines
• Volvo Penta front-entry flywheel installations
• GM one-piece rear-main-seal marine engines

Typically suits

• Engine models:
• Volvo Penta 4.3GL
• Volvo Penta 4.3Gi
• Volvo Penta 4.3GXi
• Volvo Penta 4.3OSi
• Volvo Penta 5.0GL
• Volvo Penta 5.0Gi
• Volvo Penta 5.0GXi
• Volvo Penta 5.7GL
• Volvo Penta 5.7Gi
• Volvo Penta 5.7GSi
• Volvo Penta 5.7GXi
• Engines using GM casting 12557590N or Volvo Penta 3853958
• HP Range: Engine-output dependent
• Engine Type: GM 4.3L V6 and 5.0L / 5.7L small-block V8 petrol marine engine
• Year Range: Approximately 1987 onward, dependent on engine configuration

🔌 Function

The flywheel stores rotational energy, provides starter engagement and transfers engine torque through the rubber coupler to the sterndrive input shaft.

⚠️ Common Signs of Failure

• Starter ring teeth are worn or missing
• Starter grinds during engagement
• Cracks around crankshaft bolt holes
• Excessive vibration
• Flywheel mounting face is damaged
• Coupler bolts no longer tighten correctly
• Corrosion around the crankshaft centre bore

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3858694 later or related Volvo Penta flywheel reference
• 3853958 original Volvo Penta flywheel reference
• 857223 related Volvo Penta flywheel reference

OEM / Related Numbers

• Volvo Penta: 3853958
• Volvo Penta: 3858694
• Volvo Penta: 857223
• GM Casting: 12557590N
• Mercury MerCruiser: 8M0047213
• Mercury MerCruiser: 9520001
• Mercury MerCruiser: 222-8M0047213
• GM: 14088648
• GM: 14091599N

Aftermarket / Verified Equivalents

• Mopa Motorparts: replacement flywheel 3853958
• Repower Marine: RM14
• Marine Engines 4 Less: MMR4519S
• GM-compatible 14-inch 168-tooth marine flywheel

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated