KomatsuBearing & Bushing

7S9439 Main Bearing — Komatsu 12E 1673

OEM-specification Komatsu Main Bearing. CTP aftermarket replacement. Part number 7S9439. Compatible with 12E, 1673, 1674, 955K, 977H; Engine: D333A, D334.

Main Bearing – Part No 7S9439 – Komatsu Spare Part
Part Specifications
BrandKomatsu
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.