20756597 Tension Block | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta alternator tension block for selected D5A and D7A/D7C low-left alternator installations. It provides the threaded reaction point for tensioner 20756555 and holds the charging-system belt adjustment securely after setting.

🚤 Compatibility

Typically suits:

• Volvo Penta D5A-B TA
• Volvo Penta D5A-T
• Volvo Penta D5A-TA
• Volvo Penta D7A-B TA
• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D7C-B TA
• Volvo Penta D7C-TA
• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD721VE
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE
• Volvo Penta MD2010
• Volvo Penta MD2010B

• Engine Family: D, TAD, MD

⚙️ Key Features

• Genuine alternator tension-block component
• Designed to pair with tensioner 20756555
• Correct thread and mounting geometry
• Supports stable belt-tension adjustment
• Block only; tensioner, fasteners and belt are separate
• Engine type: Volvo Penta D5 and D7 inline diesel

🔌 Function

Anchors the mechanical adjustment screw so alternator position and belt tension can be set and retained correctly.

⚠️ Common Signs of Failure

• Adjustment will not hold
• Stripped or seized internal thread
• Fretting or movement at the mounting face
• Cracks or deformation in the block
• Repeated belt looseness or alignment problems

🛠️ Service Notes

• This block is the low-left alternator mounting for D5A and D7A/D7C (plus MD2010/2010B) and is matched specifically to tensioner 20756555 — check that pairing before ordering rather than assuming the general block/collet arrangement used elsewhere in the range
• Reset and recheck belt tension after fitting, since a new block changes the geometry the tensioner is working against

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Matching tensioner 20756555
• Charging-system reference SN 1034172 onward

Other-Brand OEM Numbers

• VOE20756597

📦 Condition

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