984257 Six Point Socket Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta six point socket screw, 25 mm long, weighing 0.014 kg and listed for 18 applications across DPH, D and DPR drives. It consolidates three earlier numbers, 21511572, 3587411 and 40005584, which now all come through as this one screw. It is the shortest of the five six point socket screws numbered 984257 to 984261, which continue at 40, 50 and 75 mm.

🚤 Compatibility

Typically suits:

• Volvo Penta DPH-D1
• Volvo Penta D6-330A-F
• Volvo Penta D6-370A-F
• Volvo Penta D4-260A-F
• Volvo Penta D4-300A-F
• Volvo Penta D6-300A-F
• Volvo Penta D4-225A-F
• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPH-E
• Volvo Penta D6-400A-G
• Volvo Penta D6-400A-F
• Volvo Penta DPR-D
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-300A-G

• Engine Family: DPH, D, DPR
• HP Range: 150-400 HP

⚙️ Key Features

• 25 mm long
• 0.014 kg
• Supersedes 21511572, 3587411 and 40005584
• Listed for 18 applications across DPH, D and DPR drives
• L=25mm (Volvo assembly listing)
• Also supersedes Volvo part number 3587413

🔌 Function

Clamps two components together, its six point socket head giving full tool engagement 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 21511572, 3587411 or 40005584 should be read as this single screw
• Measure the length before ordering, as 40, 50 and 75 mm screws are listed in the same run
• Clean the socket out fully and seat the key before applying load

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 984257 → Supersedes 21511572

📦 Condition

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