21757950 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lower gear spare part for IPS2, gear ratio 1,7. The lower gear is offered as a remanufactured exchange component and also as a genuine Volvo Penta spare part. It includes the intermediate housing, but the upper tension ring and rubber rings are not included.

🚤 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 IPS2-C
• Volvo Penta D8A4-A MP
• Volvo Penta IPS2-A
• Volvo Penta IPS2-B
• Volvo Penta IPS20-E

• Engine Family: D, IPS

⚙️ Key Features

• Complete lower gear assembly with a 1.70:1 reduction ratio
• 403.244 kg
• Listed for 12 applications across D series engines and IPS drives
• Ratio decides the order, so check the ratio stamped on the drive before ordering
• Ratio 1.70:1 (Volvo assembly listing)
• Lower gear for IPS2
• Gear ratio 1,7
• Genuine Volvo Penta spare part; a remanufactured exchange alternative is also listed
• Gear ratio: 1,7
• Ips model: IPS2
• Supply: Genuine spare part

🔌 Function

Transfers power through the reduction gears to the contra-rotating propeller shafts.

⚠️ Common Signs of Failure

• Metal in the gear oil
• Water-contaminated oil
• Oil leakage at shaft seals
• Excessive backlash or vibration
• Loss of propulsion

🛠️ Service Notes

• Confirm the 1.70:1 ratio against the drive being replaced, since other ratios carry different part numbers and the assemblies are not interchangeable
• At 403.244 kg this is a freight item requiring mechanical handling and rated lifting equipment
• Check the gear oil for metal and water before ordering a complete lower gear, as seal or bearing repair may be the smaller job
• The remanufactured exchange alternative for IPS2 at ratio 1,7 is 3801722
• The core criteria have to be met to gain the full advantage of a remanufactured IPS exchange unit - they are set out in the Core Management System (CMS), or ask your Volvo Penta support representative

🔄 Supersession & Cross Reference

OEM Supersession Chain

• Volvo Penta Reman alternatives: 3801721, 3801722, 3801240 and 3801473 - ratio and serial dependent

OEM / Related Numbers

• Documented gear ratio with 21757311: approximately 1.70:1

Other-Brand OEM Numbers

• VOE21757950

OEM Reman Alternatives

• Volvo Penta Reman: 3801721
• Volvo Penta Reman: 3801722
• Volvo Penta Reman: 3801240
• Volvo Penta Reman: 3801473

Aftermarket / Verified Equivalents

• Matched gear set: 21757311

📦 Condition

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