1306341 Screw | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta cylinder-head retaining screw for selected Volvo red-block petrol engines. The high-strength bolt clamps the cylinder head and head gasket to the cylinder block and must maintain the specified preload through repeated combustion and thermal cycles. Ten bolts are normally required for the applicable four-cylinder cylinder head.512 and Victor Reinz 14-32143-01.

🚤 Compatibility

Typically suits:

• Volvo Penta AQ120B
• Volvo Penta AQ125B
• Volvo Penta AQ125A
• Volvo Penta AQ131A
• Volvo Penta AQ131B
• Volvo Penta AQ131C
• Volvo Penta AQ131D
• Volvo Penta AQ151A
• Volvo Penta AQ151B
• Volvo Penta AQ151C
• Volvo Penta AQ145B
• Volvo Penta 230A
• Volvo Penta 230B
• Volvo Penta 250A
• Volvo Penta 250B
• Volvo Penta BB140A
• Volvo Penta BB145A
• Volvo Penta AQ145A
• Volvo Penta AQ140A

• Engine Family: AQ, BB
• HP Range: Approximately 110-170 HP
• Year Range: Approximately 1970s - 1990s

⚙️ Key Features

• OEM Volvo Penta part number 1306341
• System group: Engine
• Supersedes and replaces earlier part number 945797
• Net weight approximately 0.125 kg
• Fits AQ-series, BB-series and 230/250 series marine petrol engines
• Supplied as an individual screw
• Engine type: Volvo Penta 4-cylinder overhead-cam marine petrol engine
• 10 used per assembly

🔌 Function

Secures and clamps engine-mounted components together at the specified torque so the joint remains tight under vibration and thermal cycling. Retains correct component alignment and preload throughout the service interval.

⚠️ Common Signs of Failure

• Corroded, pitted or seized threads that prevent correct torquing
• Rounded, damaged or stripped drive head making removal difficult
• Stretched or necked shank after over-torquing, causing loss of clamping force
• Repeated loosening or backing out in service, leading to vibration or leaks at the joint
• Visible cracking or shearing of the fastener

🛠️ Service Notes

• Clean the threads in the casting and check them for damage before fitting; a screw run into a dirty or pulled thread gives a false torque reading and will not hold its load
• Tighten to the torque given in the workshop manual for your engine rather than by feel, and follow the specified sequence where the joint has one
• Use the thread locking or sealing compound the manual calls for at that joint — some screws pass into oil, coolant or fuel space and have to seal as well as clamp
• Renew any screw that is stretched, corroded in the shank, or has damaged threads or a rounded head, and never reuse one that was tightened by a stretch or angle-tighten procedure
• A little marine-grade anti-seize helps later removal where the manual permits it, but keep it off threads that are meant to take a locking compound

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1306341 → Supersedes 945797

OEM / Related Numbers

• 945797 earlier number superseded by this part
• Volvo B21 / B23 / B230 cylinder-head fastening system

Other-Brand OEM Numbers

• Elring 820.512 head-bolt set
• Victor Reinz 14-32143-01 head-bolt set

OEM Reman Alternatives

• Professional engine-reconditioning suppliers: matched B21 / B23 / B230 head-bolt set

📦 Condition

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