21747723 Gear Housing Kit | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta upper gear-housing service kit used in selected SX-A and DPS-A marine propulsion installations. The kit supersedes the earlier bare housing references and is covered by Volvo Penta Parts Bulletin P-44-1-24.

🚤 Compatibility

• Engine Family: D, V, SX, DPS, FWD
• HP Range: 130-430 HP
• Year Range: Approximately late 2000s onward

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta upper gear housing
• Parts Bulletin P-44-1-24 application
• Cross-references housings 3840844 and 21119788
• Used in SX-A / DPS-A upper gear assemblies
• One verified application is 1.97-ratio SX-A product 3883603
• Engine type: Volvo Penta SX-A / DPS-A sterndrive upper gear housing

📋 Kit Contents

• 1 x upper gear housing - supplied under Volvo Penta kit 21747723
• Earlier housing reference - Volvo Penta 3840844
• Later intermediate housing reference - Volvo Penta 21119788
• Associated installation components are selected separately from the drive diagram and are not all included in the housing kit

🔌 Function

The housing supports and aligns the upper gears, bearings, clutch and shift components while containing drive lubricant.

⚠️ Common Signs of Failure

• Housing is cracked, corroded or impact damaged
• Bearing bores are worn or distorted
• Oil leaks persist from damaged sealing surfaces
• Upper gear components cannot be aligned
• Bulletin P-44-1-24 specifies the replacement kit

🛠️ Service Notes

• The drive has to come off for this, so plan for the drive oil to be drained and for the seals, gaskets and bellows disturbed by the job to be renewed
• Transfer or renew the internal parts exactly as the workshop manual for your drive directs, and set bearing preload and gear position using its measuring procedure rather than by feel — this is the part of the job that decides whether the drive lasts
• Check every mating face and seal seat is clean and undamaged, and use only the lubricants and sealants specified for that drive
• Pressure and vacuum test the assembled housing before the boat goes back in the water, then fill with the correct drive oil to the correct level
• Confirm the kit matches your drive model and serial number before starting, as housings and their gear sets are not interchangeable between drive types

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21747723 → Supersedes 21119788 → Supersedes 3840844

OEM / Related Numbers

• 21119788 earlier number superseded by this part
• 3840844 earlier number superseded by this part
• 3883603 related reference
• 977298 stud
• 984054 flange lock nut
• 3854539 magnetic plug
• 3855081 O-ring
• 3842136 cover
• 3888544 dipstick

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 8.1GiC-J, 8.1GiC-JF, 8.1GiCE-JF, 8.1GiCE-J, 8.1GiCE-M, 8.1GiCE-P, 8.1GiC-Q, 8.1GiCE-Q, 8.1GiE-KF, 8.1GiE-K, 8.1GiE-M, 8.1GiE-P, 8.1Gi-J, 8.1Gi-JF, 8.1GXiE-K, 8.1GXiE-KF, 8.1GXiE-M, 8.1GXiE-P, 8.1GXi-J, 8.1GXi-JF, 8.1OSi-J, 8.1OSi-JF, 5.7GXi-320-R, 5.7GXiE-320-R, 5.7GXiC-320-R, 5.7GXiCE-320-R, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiCE-JF, 5.7GXiCE-J, 5.7GXiCE-M, 5.7GXiC-P, 5.7GXiCE-P, 5.7GXi-J, 5.7GXi-JF, 5.7GXiE-KF, 5.7GXiE-K, 5.7GXiE-M, 5.7GXiE-P, 5.7GXi-P, 5.7OSi-300-J, 5.7OSi-300-JF, 5.7OSXi-J, 5.7OSXi-JF, 5.7Gi-300-J, 5.7Gi-300-JF, 5.7GiCE-300-M, 5.7GiE-300-N, 5.7Gi-300-N, 5.7GiE-300-P, 5.7Gi-300-P, 5.7Gi-300-R, 5.7GiE-300-R, 5.7GiC-300-J, 5.7GiCE-300-J, 5.7GiCE-300-JF, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7GXiE-N, 5.7GXi-N, 5.7GiE-300-K, 5.7GiE-300-KF, 5.7GiE-300-M, 5.7GiCE-300-P, 5.7GiC-300-R, 5.7GiCE-300-R, 4.3OSi-J, 4.3OSi-JF, 5.0GiC-225-S, 5.0GiCE-225-S, 5.0GiC-J, 5.0GXiCE-JF, 5.0GXiCE-J, 5.0GXiC-JF, 5.0GXiCE-M, 5.0GXiC-P, 5.0GXiCE-P, 5.0GXi-J, 5.0GXi-JF, 5.0GXiE-K, 5.0GL-J, 5.0GL-JF, 5.0GXi-270-R, 5.0GXiE-270-R, 5.0GXiC-270-R, 5.0GXiCE-270-R, 5.0GXiC-J, 5.0GXiE-KF, 5.0GXiE-M, 5.0GXiE-N, 5.0GXi-N, 5.0GXiE-P, 5.0GXi-P, 4.3Gi-200-R, 4.3GI-Q, 4.3GL-J, 4.3GL-JF, 4.3GL-P, 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXiE-M, 4.3GXi-P, 4.3GXiE-P, 4.3GXi-Q, 4.3GXiE-Q, 4.3GXi-J, 4.3GXi-JF, 3.0GLP-J, 3.0GLP-N, 3.0GXiC-J, 3.0GXi-J, 4.3Gi-200-S, 4.3GXi-225-S, 4.3GXiE-225-S
• Volvo Penta V8-350-C-R, V8-350-CE-R, V8-380-C-R, V8-380-CE-R, V8-430-C-R, V8-300-C-M, V8-300-CE-M, V8-350-C-M, V8-350-CE-M, V8-300-C-N, V8-300-CE-N, V8-350-C-N, V8-350-CE-N, V8-380-C-M, V8-380-CE-M, V8-270-C-B, V8-270-CE-B, V8-300-A, V8-300-E-A, V8-300-B, V8-300-E-B, V8-300-C-A, V8-300-CE-A, V8-300-C-B, V8-320-C-B, V8-320-CE-B, V8-300-CE-B, V8-320-A, V8-320-E-A, V8-320-B, V8-320-E-B, V8-320-C-A, V8-320-CE-A, V8-380-CE-A, V8-380-C-B, V8-380-CE-B, V8-380-C-D, V8-380-CE-D, V8-430-CE-D, V8-350-C-D, V8-350-CE-D, V8-380-C-A, V8-380-CE-J, V8-380-C-J, V8-430-CE-J, V8-430-C-J, V8-350-C-H, V8-350-CE-H, V8-350-C-J, V8-350-CE-J, V8-300-C-R, V8-300-CE-R, V8-430-CE-R, V8-430-C-M, V8-430-CE-M, V8-300-C-K, V8-300-CE-K, V8-350-C-K, V8-350-CE-K, V8-380-C-K, V8-380-CE-K, V8-430-C-K, V8-430-CE-K, V8-300-C-P, V8-300-CE-P, V8-350-C-P, V8-350-CE-P, V8-380-C-P, V8-380-CE-P, V8-430-C-P, V8-300-CE-G, V8-300-C-G, V8-300-C-H, V8-300-CE-H, V8-300-C-J, V8-300-CE-J, V8-350-C-G, V8-350-CE-G, V8-225-C-A, V8-225-CE-A, V8-225-C-B, V8-225-CE-B, V8-270-A, V8-270-E-A, V8-270-B, V8-270-E-B, V8-270-C-A, V8-270-CE-A, V8-380-C-N, V8-380-CE-N, V8-430-C-N, V8-430-CE-N, V8-430-CE-P, V8-300-C-S, V8-300-CE-S, V8-350-C-S, V8-350-CE-S, V8-400-CE-R
• Volvo Penta V6-200-N, V6-200-C-N, V6-200-CE-N, V6-240-M, V6-240-C-M, V6-240-CE-M, V6-280-M, V6-280-C-M, V6-280-CE-M, V6-280-J, V6-280-CE-J, V6-280-G, V6-280-C-G, V6-280-CE-G, V6-280-C-J, V6-240-N, V6-240-C-N, V6-240-CE-N, V6-280-N, V6-280-C-N, V6-240-CE-K, V6-280-CE-K, V6-200-P, V6-200-C-P, V6-200-CE-P, V6-250-P, V6-250-C-P, V6-250-CE-P, V6-280-P, V6-280-C-P, V6-280-CE-P, V6-200-C-G, V6-200-G, V6-200-J, V6-200-C-J, V6-200-A, V6-225-A, V6-225-E-A, V6-280-CE-N, V6-200-M, V6-200-C-M, V6-250-O, V6-250-C-O, V6-250-CE-O, V6-240-C-G, V6-240-CE-G, V6-240-G, V6-240-J, V6-240-CE-J, V6-240-C-J, V6-200-R, V6-200-C-R, V6-250-R, V6-250-C-R, V6-250-CE-R, V6-280-R, V6-280-C-R, V6-280-CE-R
• Volvo Penta D3-130I-C, D3-220I-G, D3-130A-C, D3-160A-C, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-C, D3-170I-G, D3-200I-G, D3-160I-C, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-140I-H
• Volvo Penta DPS-D, DPS-D1, DPS-A, DPS-B, DPS-B1
• Volvo Penta FWD-D1, FWD-D2, FWD-B1, FWD-B2
• Volvo Penta SX-D, SX-A