20586595 Main Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

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

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1640GE
• Volvo Penta TAD1641GE
• Volvo Penta TAD1642GE
• Volvo Penta TAD1641VE
• Volvo Penta TAD1642VE
• Volvo Penta TAD1643VE
• Volvo Penta TAD1650GE
• Volvo Penta TAD1651GE

• Engine Family: TAD
• HP Range: Approximately 850 HP
• Serial Range: SN-002476., Std

⚙️ Key Features

• Standard-size crankshaft main bearing
• Serial-number-controlled D16 design from serial number 002476
• 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
• Engine type: Volvo 16.1-litre 6-cylinder diesel
• 7 used per assembly

📋 Kit Contents

• 7 x upper standard main-bearing shells - kit-only components
• 7 x lower standard main-bearing shells - kit-only components
• Complete standard set contains 14 shells and services all seven crankshaft journals

🔌 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

🛠️ Service Notes

• Have the crankshaft journals measured before ordering so the kit matches the journal size — standard and reground shells are not interchangeable, and neither is a mixed set
• Fit the shells dry behind: clean the saddles and caps, wipe the shell backs, and never oil, grease or scrape the back of a shell, which stops it shedding heat and can let it move in the housing
• Check that each locating tang drops into its notch and the shell sits flush, and keep grooved, plain and flanged halves where the workshop manual for your engine puts them
• Oil the running and thrust faces, refit each cap in its original position and direction, and tighten in the manual's sequence to the torque and angle it specifies, renewing the bolts where they are single-use
• Check running clearance and crankshaft endfloat by the method in the manual and confirm the crank turns freely by hand before the sump goes back — and establish why the old bearings failed, because most repeat failures are oil supply or dirt rather than the bearings

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20586595 → Supersedes 3807106

OEM / Related Numbers

• 3807106 earlier number superseded by this part
• 8131379 related reference
• 20586596 0.25 mm undersize set
• 20586597 0.50 mm undersize set
• 20586598 0.75 mm undersize set
• 20586599 1.00 mm undersize set
• 20586600 1.25 mm undersize set
• 270929 standard thrust-washer kit

Other-Brand OEM Numbers

• Kolbenschmidt: 77955600
• GLYCO: H1083/7 STD
• MAHLE: 037 HL 21942 000

Aftermarket / Verified Equivalents

• IPSA: MB040100
• VTP: 210224
• SLP: MBP-595

📦 Condition

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