21888972 Drive Plate | Genuine Volvo Penta Part

🔧 Product Description

Mechanical drive plate coupling the D8 interceptor servo unit to the interceptor shaft. It transfers actuator movement while preserving the factory angular relationship between the servo and trimming plate.

🚤 Compatibility

• Engine Family: D, VMM
• HP Range: 110-480 HP

Full model list at the end of this description.

⚙️ Key Features

• Precision drive interface
• Transfers servo torque without slip
• Factory angular relationship and mounting pattern
• Designed for matching shaft and fasteners
• Requires correct alignment during installation

🔌 Function

Transfers controlled rotary movement from the servo unit to the interceptor shaft so the trimming plate can deploy and retract.

⚠️ Common Signs of Failure

• Free play between servo and interceptor shaft
• Cracked or distorted plate
• Rounded drive interface
• Uneven or incomplete interceptor travel
• Servo overload caused by binding or misalignment

🛠️ Service Notes

• This small drive plate (0.152 kg) couples the D8 interceptor servo to the interceptor shaft — it is a different part from the much heavier engine drive plates elsewhere in this item type, so do not cross-reference their fitment or wear notes
• Maintain the factory angular relationship when refitting, and check the shaft and fasteners for wear at the same time, since a slipping or misaligned plate shows up as inconsistent trim-tab deployment

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21875630 - servo unit
• 21888520 - interceptor shaft
• 21888526 - mounting wrench
• 21890471 - six-point socket screw
• 22399349 - flange nut
• 21947150 - trimming plate
• 21948237 - service kit

📦 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, D6-300A-G, D6-340A-G, D6-380A-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-400A-G, D6-440A-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-435D-F, D6-400A-F, D6-435I-F
• Volvo Penta D13C3-B MH, D13C1-B MH, D13C4-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-E MH, D13B-E MH (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-J MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C5-A MP, D13C7-B MP, D13C8-B MP
• 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, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G, D4-145I-G
• Volvo Penta D9A2J, D9A2G, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E, D9A2L MH
• 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
• Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
• Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A4-A MP, D8A1-A MP, D8A3-A MP
• Volvo Penta D16C-D MH, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta VMM-A