Crankshaft for BMW 3 Series Long Wheelbase — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: High | Replacement Cost in India: ₹60,000–₹1,80,000
What is the Crankshaft?
The crankshaft converts the reciprocating motion of pistons into rotational motion.
How the Crankshaft Works
Pistons push connecting rods which rotate the crankshaft to drive the drivetrain.
Why the Crankshaft is Important
It is the primary component responsible for transferring engine power.
Common Problems with the Crankshaft
- Wear
- Cracks
- Imbalance
Warning Symptoms of a Failing Crankshaft
- Engine vibration
- Knocking noise
- Oil pressure issues
Common Causes of Crankshaft Failure
- Poor lubrication
- Metal fatigue
- High stress loads
Impact on Car Performance
Failure leads to complete engine breakdown.
DIY Fix Guide — Step by Step
- Check engine oil levels
- Listen for knocking
- Inspect for metal debris in oil
- Consult professional inspection
Maintenance Tips
- Use high-quality oil
- Timely oil changes
- Avoid engine overloading
Crankshaft Replacement Cost in India
Expect to pay between ₹60,000 and ₹1,80,000 for genuine parts plus labour at an authorised BMW workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Crankshaft Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Crankshaft listings.
When to Replace the Crankshaft
Replace if cracked, bent, or causing severe vibration.