4D31 ME013660 Engine Crankshaft Compatible with Construction Machinery Engine

1. Product Overview & Wholesale Price Range

The 4D31 Engine Crankshaft (Part # ME013661) adopts premium forged steel blank. Processed by high‑precision journal grinding and surface quenching heat‑treatment. Strict dimension inspection, dynamic balance test and non‑destructive crack detection guarantee stable performance under heavy‑load working conditions.

• Factory Wholesale Price: $350‑480 USD / piece Direct factory source, favorable bulk price for repair shops and machinery spare‑parts distributors
• Material: High‑quality Forged Steel, precision journal grinding, surface quenching, dynamic balance & crack inspection
• MOQ: 1 Piece, discount available for large‑volume orders
• Stock Lead‑time: In stock, 1‑3 working days dispatch for global customers
• Warranty: 12‑month replacement warranty, comprehensive quality inspection before delivery

2. Engine & Application Compatibility List

Direct replacement part for 4D31 diesel engine, widely used on various heavy‑duty construction machinery:

• Engine Model: 4D31
• OEM Part Number: ME013661
• Structure: Premium forged steel engine crankshaft assembly
• Applications: Excavators, wheel loaders and other heavy‑duty construction machines

3. Common Crankshaft Failure Conditions

• Journal scratch & wear: Caused by poor lubrication or contaminated engine oil. Replace crankshaft once wear exceeds tolerance value.
• Bending & twisting deformation: Result from engine seizure or piston collision. We recommend brand‑new forged crankshaft instead of repairing deformed shaft for overhaul.
• Fatigue crack: Produced under long‑time cyclic heavy‑load. Each crankshaft passes crack detection before shipment to prevent fracture in operation.
• Oil‑seal journal abrasion: Will lead to engine oil leakage. Check oil‑seal position surface during engine maintenance and replacement.
• Counterweight damage: Causes abnormal vibration and noise. Full crankshaft assembly should be replaced once counterweight gets broken.

4. Supporting Diesel Engine Spare Parts

5. Frequently Asked Questions

Q1: How do I confirm this crankshaft fits my 4D31 engine?
A: Please cross‑reference OEM number ME013661. Send us your engine serial number for compatibility check before placing your order.

Q2: What quality checks will be done before shipment?
A: Every crankshaft will complete dimension measurement, journal surface inspection, dynamic balance test and non‑destructive crack detection to ensure stable heavy‑load working performance.

Q3: Can you supply full overhaul spare‑parts for 4D31 engine?
A: Yes, connecting rods, piston kits, bearing shells and full overhaul repair kits are available for one‑stop engine rebuild purchasing.