4D95 102726 102728 102732 102735 102740 104257 104319 104609 104614 104632 104639 Engine Crankshaft Compatible with Komatsu

1. Product Overview & Wholesale Price Range

The 4D95 Forged Steel Engine Crankshaft (OEM Part # 102726 / 102728 / 102732 / 102735 / 102740 / 104257 / 104319 / 104609 / 104614 / 104632 / 104639) is core rotating power component for 4D95 diesel engine, engineered for continuous heavy‑load operation of excavator, generator and industrial equipment.

• Factory Wholesale Price: $320 – $590 USD Direct factory pricing for engine overhaul workshops
• Material Specifications: High‑strength forged steel, journals with high‑frequency hardening, excellent wear‑resistance and anti‑fatigue performance
• MOQ & Bulk Discount: 1 Unit, preferential terms for full‑set engine overhaul bulk orders
• Lead Time: 1‑3 working days, abundant stock supports worldwide shipment
• Warranty: 12‑month replacement warranty, dynamic balance test and crack inspection before packing

2. Application Worksite Checklist

Manufactured for high‑torque heavy‑load operating conditions:

• Excavator & Generator Repair: Direct replacement for scored, worn or fractured original crankshaft during 4D95 diesel engine overhaul service.
• Construction & Industrial Equipment: Fits machines powered by 4D95 engine, reduces engine vibration and extends bearing service life.
• Engine Rebuild Workshop: Strictly follow original dimension standard, no modification needed for installation.
• Global Parts Distributor: Stable batch supply, complete QC documents support overseas resale business.

3. Common Crankshaft Failure Troubleshooting

• Fault 1: Journal Scoring & Wear Groove
  Cause: Impurities in engine oil scratch shaft journal surface.
  Solution: Install brand‑new 4D95 forged crankshaft, replace oil filter and clean engine oil circuit at the same time.
• Fault 2: Main Bearing Burn‑out & Engine Knocking Noise
  Cause: Long‑time heavy‑load operation leads to bearing clearance out of tolerance.
  Solution: Fit new 4D95 crankshaft matched with corresponding main and connecting rod bearing shells.
• Fault 3: Crankshaft Fatigue Crack Risk
  Cause: Engine overloading and sudden mechanical impact shock.
  Solution: Our reinforced forged 4D95 crankshaft, every piece passes non‑destructive crack detection before delivery.
• Fault 4: Front & Rear Oil Seal Recurrent Oil Leakage
  Cause: Wear groove formed on oil seal journal, oil leakage remains after replacing oil seals.
  Solution: Replace complete new crankshaft together with matching oil seal kits.

4. Matching Engine Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How can I confirm this 4D95 crankshaft fits my engine?
A: Please confirm your engine model is 4D95, cross‑reference OEM casting numbers 102726,102728,102732,102735,102740,104257,104319,104609,104614,104632,104639. Send engine serial number for quick fitment verification.

Q2: What manufacturing process for this 4D95 crankshaft?
A: It is forged steel crankshaft, main and rod journals are high‑frequency induction hardened to gain excellent wear‑resistance for heavy‑load working scenarios.

Q3: What quality tests are performed before shipment?
A: Each 4D95 crankshaft completes dimension inspection, dynamic balance test and crack visual check before packing to eliminate potential operating risks.