3857155 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lower gear for the 1.68:1 ratio, from the Marine Propulsion group, weighing 34.019 kg and listed for one DP application. It supersedes 3803412, which was catalogued earlier as a bracket, and 3855615, listed as a reman lower gear.

🚤 Compatibility

Typically suits:

• Volvo Penta DP-E

• Engine Family: DP

⚙️ Key Features

• 1.68:1 ratio
• 34.019 kg
• Supersedes 3803412 and 3855615
• One DP application

🔌 Function

Carries the drive from the vertical shaft round to the propeller shafts at the 1.68:1 reduction, forming the lower half of the drive's gear train.

⚠️ Common Signs of Failure

• Whine or howl from the lower unit under load
• Metallic glitter in the drained gear oil
• Clunk or backlash when drive is taken up
• Chipped, pitted or spalled gear teeth
• Bearing races scored or discoloured

🛠️ Service Notes

• One of the numbers it replaces was listed as a bracket, so an old parts list may point you at the wrong sort of item under 3803412 — order by this number
• The 1.78:1 gear is 3857099 and 3857152 covers 2.32:1 and 1.95:1
• Renew shims, seals and bearings and set the tooth pattern before closing up

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3857155 → Supersedes 3803412

OEM / Related Numbers

• 3855615 earlier number superseded by this part
• 3803412 earlier number superseded by this part

📦 Condition

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