827876 Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta nut for MD21A and MD21B engines fitted with a separate water outlet, from the Inlet and Exhaust System group, weighing 0.46 kg and listed for 70 applications across AQ, D, TMD, BB, MD and MS series engines. At 0.46 kg this is a substantial union nut rather than a plain fastener, and it is much larger than nut 827877 at 0.179 kg.

🚤 Compatibility

• Engine Family: AQ, D, TMD, BB, MD, MS, TAMD, MB, AQD
• HP Range: 50-75 HP

Full model list at the end of this description.

⚙️ Key Features

• For MD21A and MD21B with separate water outlet
• 0.46 kg
• 70 applications across AQ, D, TMD, BB, MD and MS series

🔌 Function

Clamps the outlet joint together and holds the sealing faces in contact against exhaust pressure and cooling water.

⚠️ Common Signs of Failure

• Water or exhaust gas weeping from the outlet joint
• Nut seized, so the joint cannot be broken without heat
• Thread stripped, galled or cross-started
• Flats rounded off by a slipping spanner
• Heavy corrosion scale between nut and mating flange

🛠️ Service Notes

• Check the engine is an MD21A or MD21B with the separate water outlet arrangement - the other nut in this group, 827877, is a different and lighter part
• Renew the sealing face or gasket at the same time rather than trying to pull a tired joint up tighter

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003R, 2003R SOLAS, 120S-B, 2003TB, 2003TB SOLAS, 120SC, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
• Volvo Penta D2-55, D2-55B, D2-55C, D2-55D, D2-55E, D2-55F, D2-50F, D2-75F, D2-60F
• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta MD22, MD22A, MD22L, MD22P
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta MS2B-A, MS2B, MS2V
• Volvo Penta TMD22A, TMD22B, TMD22P-C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta MD21B, MD21A
• Volvo Penta AQ165A
• Volvo Penta AQD21A
• Volvo Penta BB165A
• Volvo Penta D2002AG
• Volvo Penta D2003AG
• Volvo Penta MD31A
• Volvo Penta TAMD22P-B