1677345 Hex Socket Screw | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta hex socket screw is a specified-grade engine fastener used in the engine assembly hex-socket screw position. It is manufactured to the original Volvo dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. In service, it secures the specified internal or external engine component where a recessed hex drive is required. Selection must be confirmed by OEM part number 1677345, the exact engine/product model, serial number and the installed assembly configuration.

⚙️ Key Features

• OEM Volvo Penta part number 1677345
• Hexagon socket head screw requiring a hex key for installation and removal
• Supersedes and directly replaces earlier part number 974111
• Net weight 0.044 kg
• Fits D12 series marine diesel engines plus TWD and TAD industrial and generator-set engines
• Genuine Volvo Penta fastener for original assembly specification

🔌 Function

Secures and clamps engine components together at a specified torque, with a hexagon socket head allowing tightening in confined spaces. Maintaining the original fastener specification preserves correct joint clamping force.

⚠️ Common Signs of Failure

• Rounded or stripped hexagon socket preventing tool engagement
• Stretched, damaged or stripped threads causing loss of torque
• Corrosion or seizing that makes removal difficult
• Repeated loosening or a component working loose in service
• Snapped or cracked screw shank

🛠️ Service Notes

• Use a hex key or bit that fills the socket fully and is not rounded off — a sloppy tool fit is what ruins these heads
• Clean paint, sealant and dirt out of the socket before engaging the tool, and check the threads and the mating face are clean and dry
• Tighten to the figure and sequence given in the workshop manual for the assembly, rather than by feel — socket screws are often used where clamp load matters and access is poor
• Renew any screw whose socket is damaged, and refit with thread-locking compound only where the manual for that assembly calls for it
• Start every screw by hand so it picks up the thread square, particularly into aluminium housings where a cross-threaded start ruins the casting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1677345 → Supersedes 974111

OEM / Related Numbers

• 974111 earlier number superseded by this part

📦 Condition

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