VolvoBearing & Bushing

17791930 Main Bearing — Volvo FH12 FH16

This Main Bearing is a critical component within the engine's crankshaft assembly, designed to support the rotating shaft and minimize friction under high loads. It is manufactured to precise specifications, offering superior load-carrying capacity and durability compared to a worn main bearing that may show signs of scoring, pitting, or excessive clearance. Operators might experience a significant increase in engine noise, loss of oil pressure, or a noticeable reduction in engine power when this bearing fails.

Main Bearing – Part No 17791930 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryBearing & Bushing
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeMain Bearing
MaterialTri-metal or bi-metal alloy
ApplicationEngine crankshaft
Service LifeReplace during engine overhaul or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary indicator of main bearing failure is a deep, rhythmic knocking sound originating from the engine, particularly noticeable under load. This is often accompanied by a significant drop in oil pressure readings. Continued operation can lead to severe crankshaft and engine block damage, potentially requiring a complete engine rebuild or replacement.

Installation Tip

Ensure the crankshaft journals and bearing saddles in the engine block are perfectly clean and free from any debris or imperfections before installing the new bearings. Use the correct assembly lubricant on both the bearing surfaces and the crankshaft.

Service Note

When replacing main bearings, it is essential to inspect the crankshaft journals for wear, scoring, and straightness, and to check the oil pump and oil passages for proper flow.