20798373 Lock Piece | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Alternator Belt-Adjustment Lock Piece - Part Number: 20798373

Structural support or retaining component used in the high-mounted alternator pulley and belt-tension adjustment. It maintains the specified component position, load path and service clearance under engine vibration.

⚙️ Key Features

• Manufactured to the original Volvo Penta dimensional and material specification

• Maintains correct fit, alignment and service access in the designated assembly

• Designed for diesel-engine heat, vibration and operating-load exposure

• Direct replacement for a worn, damaged, missing or corroded original component

• Must be matched by part number, engine product and serial/configuration before installation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20798373 (OEM catalogue reference)

OEM / Related Numbers:

• 20798454 alternator pulley

• 20459033 alternator bracket

• 984741 and 20540915 screws

• 20795935 lock band

• 20460127 washer

• 20516135 screw

• 20797199 V-belt

• 20405804 tensioner

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• High-mounted alternator pulley and belt-tension adjustment

Typically suits:

• Engine models:

• TD520GE; TAD520GE; TAD520VE; TAD530GE; TAD531GE; TAD532GE; TD720GE; TAD720GE; TAD720VE; TAD721GE; TAD721VE; TAD722GE; TAD722VE; TAD730GE; TAD731GE; TAD732GE; TAD733GE; TAD550GE; TAD750GE

• HP Range: Approximately 160-300 HP, depending on engine rating

• Engine Type: Four- and six-cylinder Volvo Penta diesel

• Year Range: Approximately late 1990s-2010s

🔌 Function

Transfers rotational drive between the crankshaft and the specified alternator, fan, compressor or auxiliary component.

Common signs of failure:

• Cracking, fraying, glazing or missing belt material

• Belt squeal, chirping, slip or visible flutter

• Belt tracking incorrectly or wearing one edge

• Reduced charging, cooling or accessory performance

• Repeated failure caused by pulley misalignment or incorrect tension

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging