21673294 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lower gear spare part for IPS1, gear ratio 1,94/2,08. 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

• Engine Family: D, IPS
• HP Range: 260-435 HP
• Year Range: Approximately 2006 - 2020

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta IPS lower gear
• Ratio-specific gear geometry
• Factory-machined bearing and shaft interfaces
• Designed for submerged high-torque pod-drive service
• Engine type: Volvo Penta IPS pod-drive transmission
• Ratio 1.94:1. (Volvo assembly listing)
• Lower gear for IPS1
• Gear ratio 1,94/2,08
• Genuine Volvo Penta spare part; a remanufactured exchange alternative is also listed
• Gear ratio: 1,94/2,08
• Ips model: IPS1
• Supply: Genuine spare part

🔌 Function

Transfers torque through the submerged lower bevel-gear stage at the specified reduction and drives the propeller shafts.

⚠️ Common Signs of Failure

• Pitted or chipped teeth
• Excess backlash
• Bearing, shaft or seal failure after incorrect shimming

🛠️ Service Notes

• Lower gears are supplied and worked on as a matched set — do not mix a new gear with used mating gears, and keep matched bearing pairs together
• Shim values must be re-established whenever gears, bearings or housings are changed; set tooth backlash and check the tooth contact pattern against the specification for your drive rather than reusing the old shim stack blind
• This work needs the correct Volvo Penta special tools and measuring gear; without them the gear set cannot be set up correctly and will not last
• Work clean, inspect the housing bores and bearing seats, and renew the seals and O-rings that are disturbed
• Fill with the specified lubricant to the correct level, then run the drive gently under light load before working it hard, and check the lubricant for metal afterwards
• The remanufactured exchange alternative for IPS1 at ratio 1,94/2,08 is 3801714
• 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

• 3801714 - genuine Volvo Penta remanufactured lower gear

OEM / Related Numbers

• 3801453 - related lower-gear / gear references
• 3801454 - related lower-gear / gear references
• 21666188 - upper gears
• 21666189 - upper gears

OEM Reman Alternatives

• 3801714 - genuine remanufactured lower gear
• 3801710 - related exchange drives
• 3801711 - related exchange drives
• 3801712 - related exchange drives
• 3801713 - related exchange drives

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330D-E, D6-370D-E, D6-330D-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-330D-F, D6-370D-F, D6-300D-F, D6-310D-D, D6-310D-C, D6-310D-E, D6-435D-D, D6-435D-E, D6-435D-F, D6-435D-C
• Volvo Penta D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F, D4-300D-C, D4-300D-D, D4-300D-E, D4-300D-F
• Volvo Penta IPS-A, IPS-B, IPS-C, IPS-D, IPS-E, IPS-F
• Volvo Penta 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-Q