21914721 Sun Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta IPS10-A Steering Sun Gear, part number 21914721. A genuine sun gear used in the IPS10-A electrical steering-gear planetary assembly. It drives the surrounding planet gears and establishes the designed steering reduction.

🚤 Compatibility

• Engine Family: D, IPS
• HP Range: 110-480 HP
• Year Range: Approximately 2012 - current supported applications

Full model list at the end of this description.

⚙️ Key Features

• Precision-machined running, gear or bearing surfaces
• Factory tooth, journal or spline geometry
• Designed for continuous engine or steering load
• Requires correct lubrication and assembly clearances
• Engine type: Volvo Penta IPS pod-drive electronic steering system

🔌 Function

Transfers or controls rotational motion while preserving the specified timing, gear ratio, alignment and bearing relationship.

⚠️ Common Signs of Failure

• Loss of timing or steering response
• Premature bearing, seal or adjoining-gear failure

🛠️ Service Notes

• Work absolutely clean — a gear set is ruined by grit, so wash the parts in clean solvent, dry them without fibrous rag and keep the assembly covered while you work
• Inspect the mating gears, bearings, thrust faces and any clutch parts at the same time; a sun gear rarely wears alone, and reusing damaged partners will destroy the new one
• Check the new gear's tooth flanks for handling damage, and the shaft splines and bearing seats for pick-up or scoring, before anything goes together
• Follow the workshop manual for your engine on shimming, endfloat and backlash rather than building to feel, and fit new seals, gaskets and locking devices throughout
• Pre-lubricate on assembly, refill with the oil grade the manual specifies, then turn the unit through by hand and check for tight spots before running it up and rechecking the level

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21914721 → Supersedes 3588113

OEM / Related Numbers

• 3588113 earlier number superseded by this part
• 21914723 - planet gear
• 21914725 - ring gear
• 21914729 - steering axle
• 181269 - needle roller assemblies
• 183365 - needle roller assemblies
• 21914727 - version-specific drive plates
• 21914731 - version-specific drive plates
• 21914719 - related planet gear
• 3588127 - spacer plate
• 945486 - snap ring
• 184864 - ball bearing
• 184078 - needle roller bearing
• 994442 - flange screw

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330A-F, D6-370A-F, D6-330D-F, D6-370D-F, D6-300A-F, D6-300D-F, D6-300I-F, D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-435D-F, D6-400A-F, D6-435I-F
• Volvo Penta D4-260A-F, D4-260D-F, D4-260I-F, D4-300A-F, D4-300D-F, D4-180I-F, D4-225I-F, D4-300I-F, D4-225A-F, D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G
• Volvo Penta D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-E MH, D13B-E MH (FE), D13B-N MH, D13B-N MH (FE), D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C5-A MP
• Volvo Penta D3-110I-H, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H
• Volvo Penta D8A5-A MH, D8A6-A MH, D8A1-A MP, D8A2-A MP, D8A3-A MP, D8A4-A MP
• Volvo Penta D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
• Volvo Penta IPS10-A, IPS10-B