Crankshaft for BMW M4 CS — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: High | Replacement Cost in India: ₹1,20,000–₹3,00,000
What is the Crankshaft?
The crankshaft converts the reciprocating motion of pistons into rotational motion to drive the vehicle.
How the Crankshaft Works
It rotates via connecting rods attached to pistons, transferring power to the drivetrain.
Why the Crankshaft is Important
Critical for engine power delivery and smooth operation.
Common Problems with the Crankshaft
- Wear
- Cracks
- Imbalance
Warning Symptoms of a Failing Crankshaft
- Engine vibration
- Knocking noise
- Oil pressure drop
Common Causes of Crankshaft Failure
- Poor lubrication
- High stress
- Manufacturing defects
Impact on Car Performance
Failure can cause complete engine breakdown.
DIY Fix Guide — Step by Step
- Monitor oil levels
- Check for unusual vibrations
- Avoid over-revving
- Inspect bearings
- Seek professional diagnosis
Maintenance Tips
- Use quality engine oil
- Regular oil changes
Crankshaft Replacement Cost in India
Expect to pay between ₹1,20,000 and ₹3,00,000 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
Only if severely damaged or worn.