3888989 Countershaft | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta countershaft from the marine propulsion group, weighing 8.478 kg and listed for 22 applications across D and HS series engines and transmissions. At over 8 kg this is a substantial gearbox shaft and a heavy item to handle.

🚤 Compatibility

• Engine Family: D, HS
• HP Range: 300-435 HP

Full model list at the end of this description.

⚙️ Key Features

• 8.478 kg
• 22 applications across D and HS series
• Transmission countershaft

🔌 Function

Transmits drive between gears inside the transmission, carrying the torque and thrust of the gear train.

⚠️ Common Signs of Failure

• Whining, growling or rumbling that changes with gear selected
• Vibration through the drivetrain under load
• Bright metallic glitter or chips in the transmission oil
• Worn, pitted or chipped gear teeth and bearing journals on strip-down
• Play or knock felt in the gear train

🛠️ Service Notes

• Renew the bearings and seals running on the shaft at the same time, as a shaft rarely fails without taking them with it
• Inspect the mating gears and the transmission oil for debris before reassembly, and set endfloat to specification
• Allow for the weight when handling: at over 8 kg this is not a one-hand lift

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-310I-D, D6-310I-E, D6-300I-F, D6-330I-C, D6-370I-C, D6-330I-D, D6-310I-C, D6-330I-F, D6-370I-F, D6-435I-C, D6-435I-D, D6-435I-E, D6-435I-F, D6-370I-D, D6-330I-E, D6-370I-E
• Volvo Penta D4-300I-C, D4-300I-D, D4-300I-E, D4-300I-F
• Volvo Penta HS80AE, HS80AE-B