955903 Washer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta washer weighing 0.014 kg and listed for 88 applications across the TAD, AQ, D, TMD, B and TAMD families. It replaces 11973, 3588231 and 951727.

🚤 Compatibility

• Engine Family: TAD, AQ, D, TMD, B, TAMD

Full model list at the end of this description.

⚙️ Key Features

• 0.014 kg
• Replaces 11973, 3588231 and 951727
• 88 applications across six engine families
• Order by measured size and part number
• Quantity varies by assembly, most commonly one

🔌 Function

Spreads the clamping load of the nut or screw across the joint face and protects the surface beneath it.

⚠️ Common Signs of Failure

• Dished or cupped out of flat
• Bearing face scored or polished
• Corrosion pitting beneath the fastener
• Fastener slackening in service

🛠️ Service Notes

• Check you are fitting the same type of washer that came out — plain, hardened, sealing and locking washers are not interchangeable, and the wrong one either fails to seal or fails to hold
• Treat sealing washers on fuel, oil and coolant unions as single-use; they seal by deforming onto the faces, so a used one will not seal reliably a second time
• Clean the seating faces and make sure the washer sits flat and square, fully under the head or nut, before tightening — a washer trapped on a chamfer or edge will crush unevenly
• Tighten the fastener to the figure given in the workshop manual for your engine, and account for every washer on reassembly so none is left loose inside a housing or the engine bay

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 955903 → Supersedes 11973

OEM / Related Numbers

• 3588231 earlier number superseded by this part
• 951727 earlier number superseded by this part
• 11973 earlier number superseded by this part

Aftermarket / Verified Equivalents

• SLP: W-903

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D12C-A MP, D12D-A MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, D12D-E MH, D12D-E MP, D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP
• Volvo Penta 8.1GiI-E, 8.1GXiI-D, 5.7GSiI-A, 5.7GXiI-A, 5.7GXiI-B, 5.7GXiI-C, 5.7GXiI-D, 5.7GXiI-E, 5.7GiI-A, 5.7GiI-B, 5.7GiI-C, 5.7GiI-D, 230A, 230B, 250A, 250B
• Volvo Penta D13B-E MG, D13B-E MG (FE), D13B-F MG, D13B-F MG (FE), D13C2-A MH, D13C3-B MG, D13C1-B MG, D13C4-B MG, D13C2-B MG, D13C2-A MG, D13C1-A MG
• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B, TAMD122P-C
• Volvo Penta B230, B230E, B230F, B230FB, B230FX
• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta AQ125B, AQ125A
• Volvo Penta AQ131A, AQ131D
• Volvo Penta TAD570-72VE, TAD570-71VE-B
• Volvo Penta TAD840GE, TAD840-43VE
• Volvo Penta TAMD102A, TAMD102D
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta AQ120B
• Volvo Penta D16C-A MG
• Volvo Penta D5A-B TA
• Volvo Penta D7A-B TA
• Volvo Penta TAD540-42VE
• Volvo Penta TAD550-51VE
• Volvo Penta TAD552VE
• Volvo Penta TAD850-52VE
• Volvo Penta TAD853VE
• Volvo Penta TAD870-73VE
• Volvo Penta TAMD103A
• Volvo Penta TAMD121D
• Volvo Penta TMD121C
• Volvo Penta TMD122A