1556285 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta flange screw is a structural fastening, locking or support component used in the engine assembly fastening. It is manufactured to the original Volvo Penta dimensions and interface requirements so the assembly retains its designed clamp load, support and alignment. In service, it provides the specified flanged clamping fastener for the D16 installation. Fitment is controlled by the exact engine or product configuration and serialised parts list; confirm OEM number 1556285 against the installed assembly before ordering.

🚤 Compatibility

• Engine Family: TAD, TWD, TAMD, TD, DH
• Serial Range: (M12) SN2061187230-., M12

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1556285
• M12 thread size
• System group: Fuel System
• Net weight approximately 0.070 kg
• Integral flange head distributes clamping load without a separate washer
• Fits TAMD, TAD, TWD, TD and DH series marine and industrial diesel engines

🔌 Function

Clamps and retains fuel system components at their mounting points, with the flanged head providing an even bearing surface to maintain correct joint pressure. Correct torque on this fastener keeps sealing faces tight and prevents fuel leakage or component movement in service.

⚠️ Common Signs of Failure

• Fuel weeping or seepage at the joint from a loosened or under-torqued screw
• Stripped, galled or damaged threads preventing correct torque
• Corrosion or pitting of the head and flange face in the marine environment
• Stretched, deformed or cracked head after over-torquing
• Screw seized in place, requiring replacement on removal

🛠️ 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

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
• Volvo Penta TAD1030P, TAD1030G, TAD1030GE, TAD1030V
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TAD1031G, TAD1031GE
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD122P-A, TAMD122P-B
• Volvo Penta DH10A
• Volvo Penta TAD1032GE
• Volvo Penta TAMD102D
• Volvo Penta TAMD103A
• Volvo Penta TAMD163P-A
• Volvo Penta TAMD63P-A
• Volvo Penta TAMD75P-A
• Volvo Penta TD164KAE
• Volvo Penta TWD1031VE