11128176 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta high-strength flange screw used to secure the flywheel to the crankshaft on selected TAD11 industrial engines. The integrated flange distributes clamp load across the flywheel mounting face. Correct screw condition, tightening sequence and torque-angle procedure are essential for reliable flywheel retention.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1170-72VE

• Engine Family: TAD
• HP Range: Approximately 300-550 HP
• Year Range: Approximately 2000s - 2010s

⚙️ Key Features

• OEM Volvo Penta part number 11128176
• Flange-head screw with integral bearing face, no separate washer required
• Net weight approximately 0.297 kg
• Fits TAD1170-72VE series engines
• Supplied as an individual fastener
• Engine type: Volvo Penta inline 6-cylinder 11-litre industrial diesel
• 12 used per assembly

🔌 Function

Secures a component to the engine using a flange-head design that distributes clamping force over a wider area of the mating surface. This helps maintain joint preload and reduces the risk of the fastener loosening under vibration.

⚠️ Common Signs of Failure

• Damaged, stripped or galled threads that prevent correct torque being reached
• Corrosion or pitting on the shank, threads or flange face
• Repeated loosening of the joint or fastener backing out under vibration
• Stretched or necked shank from over-torquing, or a visibly deformed flange face
• Rounded or damaged drive head preventing proper tool engagement

🛠️ Service Notes

• The integral flange spreads the load and forms the bearing face, so do not add a separate washer unless the workshop manual for your engine specifically calls for one
• Clean the threads and the seating face before fitting — grit, paint or old sealant under the flange gives a false torque reading and the joint will slacken off in service
• Where the flange is serrated it must bear directly on clean metal to grip; discard any screw with a deformed flange or damaged serrations rather than reusing it
• Tighten to the torque and sequence given in the workshop manual for your engine, and treat the screw as single-use where the manual specifies an angle-tightened or stretch fastener
• Check the thread in the receiving component at the same time; a pulled or corroded thread will not hold a new screw however carefully it is torqued

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 15058659 - Related flywheel
• 20711957 - Related ring gear
• 11128088 - Related cover
• 11128097 - Related rear gear

📦 Condition

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