190529 Tab Washer | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta tab washer is a positive-locking washer designed to secure a critical retaining fastener used in the engine oil-pump retaining fastener. It is manufactured to the original Volvo Penta dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. In service, it mechanically locks the oil-pump retaining screw so vibration cannot loosen the critical fastener. Selection must be confirmed by OEM part number 190529, the exact engine or product model, serial number and installed configuration.

🚤 Compatibility

• Engine Family: MD, TMD, AQ, TD, TWD, BB, TID, D, B, TAMD, TAD, MB, AQD

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM tab washer
• OEM part number 190529
• Use a new washer, torque the fastener correctly and bend the specified tab firmly against the locking face.
• 2 used per assembly
• Also supersedes Volvo part number 468023

🔌 Function

Mechanically locks the oil-pump retaining screw so vibration cannot loosen the critical fastener. Use a new washer, torque the fastener correctly and bend the specified tab firmly against the locking face.

⚠️ Common Signs of Failure

• Flattened or broken locking tab
• Fastener movement or loss of specified clamp load
• Cracking around the washer bore
• Fretting or polished movement marks beneath the fastener
• Oil-pump or retained-component damage following fastener loosening

🛠️ Service Notes

• Locks the oil-pump retaining screw specifically — this is not the turbocharger tab washer used elsewhere in the range, so check which fastener you are working on before ordering
• Two are used per assembly; fit new ones every time, as a tab washer is single-use once bent
• Bend the tab firmly against a flat of the screw head after it has been torqued to spec, not before, and not against a corner

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 190529 → Supersedes 468351

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TD100ARC, TD100G-85, TD100A, TD100AG, TD100CHC, TD100G, TD100GG, TD100GGP, TD100HP, TD100HPB, TD100GG-85, TD100GP, TD100GP-85, TD100CRC
• Volvo Penta TD120C, TD120A, TD120G, TD120GG PP, TD120HP, TD120HPP, TD120GG, TD120AHC, TD120ARC, TD120BHC, TD120BRC
• Volvo Penta TID121KG, TID121KGP, TID121KP, TID121LG, TID121LGP, TID121LP, TID121FG, TID121K, TID121K-87
• Volvo Penta TD121G-87, TD121GGP-87, TD121G, TD121GG, TD121GGP, TD121CHC, TD121CRC
• Volvo Penta TID100KG, TID100K, TID100K-87, TID100KGP-87, TID100KP, TID100KP-87, TID100KPB-87
• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B, TAMD122P-C
• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta MD100A, MD100B, MD100B-CC
• Volvo Penta TAD120AHC, TAD120BHC, TAD120CHC
• Volvo Penta AQ115A, AQ115B
• Volvo Penta D100A, D100B
• Volvo Penta 100S, 110S
• Volvo Penta TAD1030V, TAD1030VE
• Volvo Penta TAMD120A, TAMD120B
• Volvo Penta TID120FG, TID120HPP
• Volvo Penta TMD100A, TMD100C
• Volvo Penta TMD120A, TMD120B
• Volvo Penta AQ165A
• Volvo Penta AQD21A
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta D120A
• Volvo Penta MD120A
• Volvo Penta MD21A
• Volvo Penta TAD121CHC
• Volvo Penta TAMD121D
• Volvo Penta TD1010G
• Volvo Penta TD1030VE
• Volvo Penta TMD102A
• Volvo Penta TMD121C
• Volvo Penta TMD122A
• Volvo Penta TWD1010G
• Volvo Penta TWD1030ME
• Volvo Penta TWD1031VE
• Volvo Penta TWD1230ME