20578851 Main Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Standard Main Bearing Kit for Crankshaft Journals 1-6 - Part Number: 20578851

A genuine Volvo Penta standard-size crankshaft main-bearing service package for the D16 engine family. Bearing position and engine serial break are critical.

Kit Contents:

• 1 x upper main-bearing shell - kit-only component

• 1 x lower main-bearing shell - kit-only component

• One kit services one journal; six kits are required for crankshaft journals 1-6

⚙️ Key Features

• Standard-size crankshaft main bearing

• Serial-number-controlled D16 design

• Precision matched upper and lower shells

• Used in 16.1-litre Volvo Penta and Volvo Group engines

• Crankshaft journals and housing bores must be measured before assembly

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20578851 current standard bearing reference from engine serial 002477

OEM / Related Numbers:

• 20578851

• 20578853 standard rear / number 7 bearing kit

• 20700881 0.25 mm undersize

• 20700882 0.50 mm undersize

• 20700885 0.75 mm undersize

• 20700886 1.00 mm undersize

• 20700887 1.25 mm undersize

• 270929 standard thrust-washer kit

Aftermarket / Verified Equivalents:

• Kolbenschmidt: 77957600 complete standard 6+1 bearing set

• GLYCO: H1016/7 STD complete set

• NE: 180059001100 complete set

• VTP: 210224ALT complete set

🚤 Compatibility

Commonly used on:

• Volvo Penta D16 crankshaft assemblies

• Volvo Truck D16 and Volvo Construction Equipment D16 engines

Typically suits:

• Engine models:

• TAD1640-42GE-B

• TAD1640GE

• TAD1640VE-B

• TAD1641GE

• TAD1641VE

• TAD1641VE-B

• TAD1642GE

• TAD1642VE

• TAD1642VE-B

• TAD1643VE

• TAD1643VE-B

• TAD1650GE

• TAD1650VE

• TAD1650VE-B / TAD1651VE

• TAD1651GE

• TAD1660VE

• TAD1661VE

• TAD1662VE

• TAD1662VE EU5

• TAD1670VE

• TAD1671VE

• TAD1672VE

• TWD1643GE

• TWD1644GE

• TWD1645GE

• TWD1652GE

• TWD1653GE

• TWD1663GE

• TWD1672GE

• TWD1673GE

• TWD1683GE

• TWD1683VE

• D16C-A MG

• D16C1-E MG

• D16C1-E MH

• D16C1-F MG

• D16C1-F MH

• D16C2-E MG

• D16C2-E MH

• D16C2-F MG

• D16C2-F MH

• D16C-A MH

• D16C-B MH

• D16C-C MH

• D16C-D MH

• HP Range: Approximately 534-850 hp

• Engine Type: Volvo 16.1-litre 6-cylinder diesel

• Serial Range: Engine serial 002477 onward; six 20578851 kits plus one 20578853 kit complete the standard seven-journal set

• Year Range: Approximately 2003 onward

🔌 Function

Supports the crankshaft journal, maintains the specified oil film and transfers combustion loads into the cylinder block.

Common signs of failure:

• Low engine oil pressure

• Crankshaft knock or rumble

• Bearing material found in the oil or filter

• Excessive crankshaft journal clearance

• Scored, overheated or fatigued bearing shells

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging