21544941 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

A high-strength torque-and-angle flange screw securing the connecting-rod cap on selected Volvo Penta D5 and D8 engines. Two screws are used per connecting rod in the applicable crank mechanism.

🚤 Compatibility

• Engine Family: TAD, D, TADH

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta critical engine fastener
• Two screws used per connecting rod
• Correct thread, flange and controlled-stretch properties
• Used with connecting rod 21537993 or 22571627
• Install only to the Volvo Penta workshop-manual procedure
• Engine type: Four- or six-cylinder turbocharged common-rail diesel

🔌 Function

Applies the precise clamping load that retains the connecting-rod cap and big-end bearing on the crankshaft journal.

⚠️ Common Signs of Failure

• Damaged or stretched fastener
• Rod-cap movement
• Big-end bearing knock
• Thread damage in the connecting rod
• Connecting-rod failure after incorrect reuse or tightening

🛠️ 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

• 21537993 → 22571627 - connecting-rod references
• 21908108 and 22720415 - related big-end bearing kits
• 22960905 - gudgeon pin
• 22840297 and 22937567 - related crankshafts

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
• Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
• Volvo Penta TAD570-72VE, TAD570-71VE-B
• Volvo Penta TAD880-82GE, TAD880-84VE
• Volvo Penta TADH880-82GE, TADH880-84VE
• Volvo Penta TAD540-42VE
• Volvo Penta TAD550-51VE
• Volvo Penta TAD552VE
• Volvo Penta TAD580-83VE
• Volvo Penta TAD841-43GE
• Volvo Penta TAD850-52VE
• Volvo Penta TAD851-53GE
• Volvo Penta TAD853VE
• Volvo Penta TAD870-73VE