C4.4 371‑3842 Forged Crankshaft Compatible with Construction Machinery Engine

1. Product Overview & Wholesale Price Range

The C4.4 Forged Crankshaft (Part # 371‑3842) adopts high‑strength forged alloy steel material for C4.4 diesel engine. Finished by precision grinding and dynamic balance testing, it converts piston reciprocating motion into rotary power, widely used on compact excavators and construction machinery.

• Factory Wholesale Price: $640‑830 USD / piece Direct factory supply, favorable bulk price for repair shops and distributors
• Material: Forged Alloy Steel, precision journal grinding, dynamic balance processed
• MOQ: 1 Piece, bulk discount for large quantity orders
• Stock Lead‑time: In stock, 1‑3 working days dispatch for worldwide customers
• Warranty: 12‑month replacement warranty, dimension & visual crack inspection before shipment

2. Engine & Application Compatibility List

Perfect fit for C4.4 diesel engine, applied on multiple construction‑duty equipment:

• Engine Model: C4.4
• OEM Part Number: 371‑3842
• Structure: Forged crankshaft finished with grinding & dynamic balance
• Applications: Compact excavators, wheel loaders, engineering construction machinery

3. Common Crankshaft Failure Phenomena

• Journal scoring & wear: Caused by poor lubrication or damaged bearing shells. Must replace crankshaft or do professional repair; cannot assemble with worn journals.
• Bending & distortion: Result of engine seizure or heavy impact. Do not straighten distorted crankshaft directly, replace new forged crankshaft.
• Fatigue crack: Long‑time cyclic heavy load. Strict crack detection before delivery to avoid fracture inside engine.
• Oil seal position wear: Will lead to engine oil leakage. Check oil‑seal journal surface condition during overhaul replacement.
• Thread & keyway damage: Improper installation impact. Replace crankshaft when keyway or thread position is damaged.

4. Related Popular Diesel Engine Spare Parts

5. Frequently Asked Questions

Q1: How do I confirm this crankshaft fits my C4.4 engine?
A: Confirm OEM number 371‑3842. Send your engine serial number for cross‑check compatibility before placing order.

Q2: What quality inspections before shipment?
A: Each C4.4 crankshaft undergoes journal dimension measurement, visual crack check and dynamic balance test to guarantee stable working performance.

Q3: Can you supply full overhaul spare‑parts for C4.4 engine?
A: Yes, connecting rods, piston kits, bearing shells and full overhaul kits are available for one‑stop engine rebuild purchasing.