1556956 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 1556956 against the installed assembly before ordering.

🚤 Compatibility

• Engine Family: TWD, TID, TD, TAMD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM part number 1556956
• System group: Engine
• Net weight: 0.322 kg
• Supersedes previous part number 1543132
• Fits TWD16, TID162, TD164, TAMD162, TAMD163, TAMD165 and TAD163 series engines
• Flange head design spreads clamping load without a separate washer
• 36 used per assembly

🔌 Function

A flange screw clamps two components together, with the integrated flange head distributing the load over a wider area of the mating surface. It maintains correct joint tension and alignment of the assembly it secures.

⚠️ Common Signs of Failure

• Loss of torque or the fastener working loose in service
• Stretched, distorted or snapped shank after over-tightening
• Damaged or rounded head preventing correct tool engagement
• Stripped or galled threads that will not hold torque
• Corrosion or seizing making removal difficult and causing leaks at the clamped joint

🛠️ 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 Supersession Chain

• 1556956 → Supersedes 1543132

OEM / Related Numbers

• 1543132 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TAD1630G, TAD1630GE
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TAMD165A, TAMD165C
• Volvo Penta TWD1630G, TWD1630V
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G