20790428 Big-End Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D5 / D7 0.50mm Repair-Size Connecting-Rod Bearing Kit - Part Number: 20790428

A genuine Volvo Penta 0.50mm repair-size big-end bearing pair for Deutz-derived D5 and D7 engines fitted with connecting rod 20585982. It is used after the crankpin has been professionally reground 0.50mm undersize.

One kit services one connecting rod. Four-cylinder D5 engines normally require four kits and six-cylinder D7 engines normally require six kits. The bearing is serial- and rod-revision controlled.

⚙️ Key Features

• Genuine Volvo Penta 0.50mm D5 / D7 big-end bearing pair

• Only for connecting rod 20585982

• One upper and one lower shell per kit

• Four kits for D5 four-cylinder engines; six kits for D7 six-cylinder engines

• Direct heavy-duty engine-bearing alternatives available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20790428 current OEM 0.50mm repair-grade reference

• 21203689 recognised related / superseded 0.50mm bearing reference where catalogued

OEM / Related Numbers:

• 20790428

• 20585982 required connecting-rod reference

• Volvo Penta D5 / D7 crankshaft and connecting-rod components

• Connecting-rod bolts and small-end bushing - separately serviced

Aftermarket / Verified Equivalents:

• King: CR1634CP0.5

• Kolbenschmidt: 79408620

• NE: 181015000821

• Component references: 60132620 / 72189620

• Blumaq: VOP20790428

• Aftermarket references: BBK-90428 / 020219

📦 Kit Contents

• 20790428 upper connecting-rod bearing half-shell - 1

• 20790428 lower connecting-rod bearing half-shell - 1

• 20790428 matched 0.50mm big-end bearing pair for one connecting rod - 1 set

• Volvo Penta does not assign separate service part numbers to the two half-shells; both are serviced under kit number 20790428

• Connecting-rod bolts and small-end bushing are not included

🚤 Compatibility

Commonly used on:

• Volvo Penta Deutz-derived D5 and D7 industrial crank mechanisms

• Construction and generating-set engines using connecting rod 20585982

Typically suits:

• Engine models / systems:

• Volvo Penta D5A-TA, D5A-T and D5A-BTA

• Volvo Penta TAD520GE, TAD520VE, TAD530GE, TAD531GE and TAD532GE

• Volvo Penta TD520GE

• Volvo Penta D7A and D7D industrial engine families

• Volvo Penta TAD720GE, TAD720VE, TAD721GE, TAD721VE, TAD722GE and TAD722VE

• Volvo Penta TAD730GE, TAD731GE, TAD732GE and TAD733GE

• Volvo Penta TAD750, TAD751 and TAD760 where connecting rod 20585982 is fitted

• HP Range: Approximately 110HP - 320HP, dependent on D5 / D7 engine rating

• Engine Type: Volvo Penta 4- or 6-cylinder Deutz-derived turbocharged industrial diesel

• Year Range: Approximately late 1990s - 2010s

• Fitment Note: Only for connecting rod 20585982. Confirm the engine serial and measure the crankpin; this kit is 0.50mm repair size.

🔌 Function

The shell pair supports one connecting rod on the crankpin oil film and carries combustion and reciprocating loads.

Common signs of failure:

• Big-end knock develops under load

• Bearing clearance exceeds specification

• Shells are wiped, scored, fatigued or heat-discoloured

• Metal debris is present in the sump or oil filter

• The installed shell does not match crankpin repair size

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging