984275 Hex Socket Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hexagon socket screw, 40 mm long, weighing 0.018 kg and listed for 12 applications across D-series engines and DPH and DPI drives. It supersedes 3888786, which was catalogued earlier as a flange screw, so check the head form against what you removed. Socket screw 984274 shares the same 0.018 kg and the same application count but is specified for a bearing housing instead, so weight will not separate the two.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPH-E
• Volvo Penta DPI-A
• Volvo Penta D6-400A-G
• Volvo Penta D6-440A-G
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-320A-G
• Volvo Penta D4-300A-G

• Engine Family: D, DPH, DPI
• HP Range: 150-440 HP

⚙️ Key Features

• 40 mm long
• 0.018 kg
• Supersedes 3888786
• The superseded number was catalogued earlier as a flange screw
• Same published weight and application count as socket screw 984274
• L=40mm (Volvo assembly listing)
• Quantity varies by assembly, most commonly two

🔌 Function

Clamps two components together, its socket head allowing the screw to be driven in a recessed position.

⚠️ Common Signs of Failure

• Socket rounded out by a worn or undersized key
• Debris packed into the socket so the tool will not seat fully
• Thread stripped or picked up on withdrawal
• Corrosion seizing the screw into the casting

🛠️ Service Notes

• An older list quoting 3888786 as a flange screw should be read as this socket screw, so expect a different head form
• Order by length and number rather than weight, since 984274 is published at the same 0.018 kg

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 984275 → Supersedes 3888786

OEM / Related Numbers

• 3888786 earlier number superseded by this part

📦 Condition

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