21584141 Gear Set | Genuine Volvo Penta Part

🔧 Product Description

A genuine matched gear set used in the lower gear housing of Volvo Penta IPS2-A propulsion units. The gears are manufactured and lapped as a matched set to maintain the designed tooth contact, ratio, noise level and load capacity and should not be mixed with gears from another set.

🚤 Compatibility

Typically suits:

• Volvo Penta D11C2-A MP
• Volvo Penta D11C4-A MP
• Volvo Penta D11B4-A MP
• Volvo Penta D11B2-A MP
• Volvo Penta D11A-C MP
• Volvo Penta D11A-D MP
• Volvo Penta D11A-E MP
• Volvo Penta IPS20-D
• Volvo Penta IPS2-C
• Volvo Penta D8A4-A MP
• Volvo Penta IPS2-A
• Volvo Penta IPS2-B

• Engine Family: D, IPS
• Year Range: Approximately 2006 - 2018 production-era applications

⚙️ Key Features

• Genuine Volvo Penta matched lower-gear set
• Specified for IPS2-A lower gear assemblies
• Factory-matched tooth geometry and contact pattern
• Used with the specified shafts, bearings and shim stacks
• Professional drive setup and shimming required
• Engine type: Volvo Penta IPS2 pod-drive lower gear

🔌 Function

Transfers torque through the lower gear housing at the specified ratio and direction while maintaining synchronized tooth contact under propulsion load.

⚠️ Common Signs of Failure

• Gear whine, rumbling or knocking
• Metal particles in the drive lubricant
• Pitted, chipped or spalled gear teeth
• Excess backlash or incorrect tooth-contact pattern
• Bearing or seal failure caused by incorrect shimming

🛠️ Service Notes

• Gear sets are supplied as a matched set and must be fitted complete — never run a new gear against a used mate, and keep the set together as it was delivered
• Setting up requires the shimming, backlash and tooth contact pattern checks in the workshop manual for your engine and drive, together with the proper measuring and pressing tools; this is not a fit-and-hope job
• Establish why the old set failed before assembly — debris, a collapsed bearing or oil starvation will destroy the new gears just as quickly
• Renew the bearings, seals and locking hardware at the same time, and flush the housing thoroughly so no metal debris is left in it
• Fill with the oil specified for your drive, then check the oil early in service for signs of abnormal bedding-in debris

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21757311 - separately catalogued gear set used at the related lower-gear position; verify serial application

OEM / Related Numbers

• 40005348 - related lower-gear assemblies
• 21757950 - related lower-gear assemblies
• 3818419 - gear housing
• 3819139 - shaft
• 993987 - needle roller bearing
• 991008 - adjustment shims
• 991009 - adjustment shims
• 991010 - adjustment shims
• 991005 - adjustment shims
• 991006 - adjustment shims
• 991007 - adjustment shims
• 3818421 - bearing box
• 22744268 - adjustment washers
• 22744269 - adjustment washers
• 22890460 - adjustment washers

OEM Reman Alternatives

• 3801240 - remanufactured lower-gear references
• 3801473 - remanufactured lower-gear references
• 3801721 - remanufactured lower-gear references
• 3801722 - remanufactured lower-gear references

📦 Condition

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