20700890 Main Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 0.25mm repair-size D16 rear main-bearing pair for crankshaft journal 7 - Part Number: 20700890 A genuine Volvo Penta repair-size main-bearing kit for the 16.1-litre D16 crankshaft. This kit is the 0.25mm bearing grade used after the crankshaft journal has been professionally reground by the corresponding amount. Applicable from engine serial 002477 onward. Volvo catalogues each part number as one upper-and-lower bearing pair for one journal, not as a complete seven-journal engine set. Thrust washers are separately serviced and are not included.

🚤 Compatibility

• Engine Family: D, TAD, TWD
• HP Range: 230 HP
• Year Range: Approximately 2003 - 2020s
• Serial Range: SN002477- Bearing no 7., O.S=0,25mm

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta 0.25mm D16 main-bearing repair kit
• Serial-revised dedicated rear main-bearing kit for journal 7
• Precision matched upper and lower bearing half-shells
• Required engine quantity: 1 kit, plus six journals 1-6 kits
• Designed for the 16123cc inline-six D16 crankshaft
• Engine type: Volvo Penta 16.1-litre inline 6-cylinder, 24-valve turbocharged diesel
• Quantity varies by assembly, most commonly one

📋 Kit Contents

• 20700890 upper main-bearing half-shell - 1
• 20700890 lower main-bearing half-shell - 1
• 20700890 matched bearing pair for one crankshaft journal - 1 set
• Volvo Penta does not allocate separate service part numbers to the two half-shells; both pieces are supplied and serviced under kit number 20700890
• Thrust washers, crankshaft and installation lubricants are not included

🔌 Function

The two half-shells support one crankshaft main journal on a pressurised oil film, maintaining crankshaft alignment and carrying combustion and rotating loads.

⚠️ Common Signs of Failure

• Crankshaft main-journal clearance exceeds specification
• Bearing overlay is wiped, scored, fatigued or heat-discoloured
• A reground crankshaft has been fitted with the wrong repair-grade shell

🛠️ 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 / Related Numbers

• 8131247 related D16 crankshaft, revision dependent
• 22235130 related D16 crankshaft, revision dependent
• 270929 standard thrust-washer kit - separately serviced
• 270930 +0.10mm thrust-washer kit - separately serviced
• 270931 +0.20mm thrust-washer kit - separately serviced
• 270932 +0.30mm thrust-washer kit - separately serviced

Other-Brand OEM Numbers

• Kolbenschmidt: 77957610 complete 0.25mm D16 main-bearing set covering the matching journal positions

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C-D MH, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta D13C3-B MH, D13C4-B MH, D13C5-B MP, D13C3-B MG, D13C4-B MG, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP
• Volvo Penta TAD1640-42GE-B, TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
• Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
• Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
• Volvo Penta TAD1650VE-B/51VE, TAD1650GE, TAD1650VE
• Volvo Penta D8A6-A MH, D8A6-A MG
• Volvo Penta TAD1643VE-B, TAD1643VE
• Volvo Penta TWD1683GE-B, TWD1683VE
• Volvo Penta D4-230I-G
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1744GE