31251996 Big-End Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta big-end bearing kit from the Engine group, weighing 0.048 kg and listed for 50 D series engine applications. It supersedes part number 9180722.

🚤 Compatibility

• Engine Family: D
• HP Range: 110-220 HP

Full model list at the end of this description.

⚙️ Key Features

• 0.048 kg
• Supersedes 9180722
• 50 D series engine applications
• Quantity varies by assembly, most commonly one

🔌 Function

Provides the bearing shells that carry the connecting rod on the crankshaft journal.

⚠️ Common Signs of Failure

• Knocking under load from the bottom end
• Low oil pressure, worst when hot
• Overlay worn through to the shell backing
• Metal debris in the oil and on the filter
• Crankshaft journal scored or out of round

🛠️ Service Notes

• Measure journal size, taper and ovality before fitting
• Establish why the old bearings failed; dirty oil or a blocked gallery will wreck a new set

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 31251996 → Supersedes 9180722

OEM / Related Numbers

• 9180722 earlier number superseded by this part

Other-Brand OEM Numbers

• Glyco: 71-3926 STD
• Kolbenschmidt: 37071620

Aftermarket / Verified Equivalents

• King: CR1657SV

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D3-220I-G, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H