3852402 Drive Gear Set | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta drive gear set for the 1.51:1 and 1.79:1 ratios, weighing 2.06 kg and listed for 14 applications on the SX drive series. It supersedes part number 3850937, catalogued earlier as a gear set.

🚤 Compatibility

Typically suits:

• Volvo Penta SX-RT2
• Volvo Penta SX-S
• Volvo Penta SX-ST
• Volvo Penta SX-C
• Volvo Penta SX-C1
• Volvo Penta SX-C2
• Volvo Penta SX-CT
• Volvo Penta SX-CT1
• Volvo Penta SX-CT2
• Volvo Penta SX-M
• Volvo Penta SX-M1
• Volvo Penta SX-MTD
• Volvo Penta SX-MTD3
• Volvo Penta SX-RT1

• Engine Family: SX

⚙️ Key Features

• For the 1.51:1 and 1.79:1 ratios
• 2.06 kg
• Supersedes 3850937
• 14 applications on the SX series

🔌 Function

Provides the meshed gear pair that turns the drive through its designed reduction ratio.

⚠️ Common Signs of Failure

• Whine or howl from the drive that rises and falls with load
• Metal glitter or chips on the oil drain magnet
• Tooth flanks pitted, scuffed or with a broken tooth
• Backlash grown well past specification
• Overheating drive oil with a burnt smell

🛠️ Service Notes

• Ratio is the only thing separating the four sets here - 1.51:1 and 1.79:1 as this part, 1.60:1 and 1.89:1 as 3852403, 1.66:1 and 1.97:1 as 3852404 and 2.18:1 as 3852405 - so confirm the ratio from the drive plate before ordering
• Renew the bearings and reset shims and backlash to specification whenever a gear set is changed
• Gears are supplied as a matched set and must be fitted as a pair

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3852402 → Supersedes 3850937

OEM / Related Numbers

• 3850937 earlier number superseded by this part

📦 Condition

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