22113257 Upper Gear | Genuine Volvo Penta Part

🔧 Product Description

Complete upper gear assembly for Volvo Penta DPR-A racing sterndrives. It forms the upper reduction and direction-changing gear section between the engine input and the lower gear unit.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-370A-C
• Volvo Penta D4-300A-C
• Volvo Penta D4-300A-D
• Volvo Penta D4-300A-E
• Volvo Penta D6-370A-D
• Volvo Penta D6-370A-E
• Volvo Penta D6-400A-E
• Volvo Penta DPR-A
• Volvo Penta DPR-D
• Volvo Penta DPR-B

• Engine Family: D, DPR
• HP Range: 300-400 HP

⚙️ Key Features

• Complete DPR-A upper gear assembly
• Factory gear ratio and bearing alignment
• Structural upper housing and internal gear train
• Interfaces with drive units 21550236 / 21550237
• Must be matched to lower gear ratio and drive serial number

🔌 Function

Receives engine torque, changes direction through the upper bevel gears and transfers power down the vertical shaft to the lower gear unit.

⚠️ Common Signs of Failure

• Input or vertical-shaft play
• Oil leakage from upper seals
• Loss of propulsion or damaged gear teeth

🛠️ Service Notes

• The upper gear is part of a shimmed, matched assembly — record and keep the original shims as you strip it, and set gear backlash and bearing preload or rolling torque to the procedure and figures in the workshop manual for your drive
• Fit gears as a set; running a new pinion against an old, worn gear leads quickly to noise and a second failure
• Fit new seals, O-rings and lock rings whenever the housing is opened, and wash the housing out thoroughly so no metal from the old failure is left in it
• Inspect the driveshaft splines, universal joints and bearing carriers while you have the access, and read the drive oil you drained — water or metal in it tells you what actually failed
• Refill with the specified drive oil to the correct level, pressure- or vacuum-test the housing where the manual calls for it, and check for noise and for water in the oil after the first run

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 22113257 → Supersedes 21661433 → Supersedes 3862817 → Supersedes 3801126

OEM / Related Numbers

• 21661433 earlier number superseded by this part
• 3862817 earlier number superseded by this part
• 3801126 earlier number superseded by this part
• Related complete Aquamatic drive options - Part Numbers: 21550236 and 21550237
• Compatible lower gear choices are installation-specific - Part Numbers: 3843006, 21550239, 3862821 or 21550240

📦 Condition

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