Crankshaft for BMW M4 Competition — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: High | Replacement Cost in India: ₹80,000–₹2,00,000
What is the Crankshaft?
The crankshaft converts the linear motion of pistons into rotational motion to drive the vehicle.
How the Crankshaft Works
It rotates within bearings as pistons move up and down, transmitting power to the drivetrain.
Why the Crankshaft is Important
Essential for engine operation and power delivery.
Common Problems with the Crankshaft
- Wear
- Cracks
- Bearing damage
Warning Symptoms of a Failing Crankshaft
- Engine knocking
- Vibration
- Oil pressure drop
Common Causes of Crankshaft Failure
- Poor lubrication
- High stress
- Contaminated oil
Impact on Car Performance
Failure can cause complete engine breakdown.
DIY Fix Guide — Step by Step
- Check engine oil regularly
- Listen for knocking sounds
- Avoid revving cold engine
- Monitor oil pressure warning
- Get periodic inspections
Maintenance Tips
- Use high-quality engine oil
- Regular oil changes
Crankshaft Replacement Cost in India
Expect to pay between ₹80,000 and ₹2,00,000 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 or severely worn.