3306 Forged Steel Engine Crankshaft 4N7694 for Heavy‑Duty Excavator Diesel Engine

1. Product Overview & Wholesale Price Range

The 3306 Forged Steel Crankshaft (Part # 4N7694) is high‑strength forged steel main shaft for 3306 6‑cylinder diesel engine, widely fitted on excavators and heavy‑duty construction machinery.

• Factory Wholesale Price: $1150‑1780 USD Direct factory supply, favorable price for repair shops and distributors
• Material: Forged Alloy Steel, journal high‑frequency quenching HRC55‑60
• MOQ: 1 Unit, bulk discount for large quantity orders
• Stock Lead‑time: In stock, 1‑3 working days dispatch for worldwide customers
• Warranty: 12‑month replacement warranty, dynamic balance & magnetic particle crack inspection before shipment

2. Engine & Application Compatibility List

Perfect fit for 3306 diesel engine, applied on multiple heavy‑duty equipment:

• Engine Model: 3306
• OEM Part Number: 4N7694
• Applications: Excavators, mining machinery, generator sets, heavy‑duty construction equipment

3. Common 3306 Crankshaft Failure Phenomena

• Journal scratch & wear: Dirty engine oil causes journal damage. Install brand‑new forged steel crankshaft instead of reused reground shaft.
• Engine knocking & bearing burning: Long‑time heavy load operation leads to bearing failure. Replace crankshaft together with full bearing set.
• Crankshaft fatigue crack: Overload working condition. Adopt qualified forged steel crankshaft to avoid fracture risk.
• Shaft‑end oil seal leakage: Wearing groove on shaft sealing position. Match with new oil seal kits while changing crankshaft.
• Abnormal engine vibration: Shaft bending or imbalance. Only use fully dynamically balanced crankshaft.

4. Related Popular Diesel Engine Spare Parts

5. Frequently Asked Questions

Q1: How can I confirm this crankshaft suits my 3306 engine?
A: Verify engine model 3306 and OEM number 4N7694. You can send engine serial number for cross‑check compatibility.

Q2: What quality tests are completed before delivery?
A: Each 3306 crankshaft passes dynamic balance test and magnetic particle crack inspection to eliminate hidden defect risk for heavy‑load working scenarios.

Q3: Can you provide complete overhaul kits for 3306 engine?
A: Yes, piston kits, bearing shells, cylinder liners and full overhaul kits are available to support one‑stop purchasing for engine rebuild projects.