BMW
MININ47 & N57 Timing Chain Specialists
BMW timing chain replacement carried out correctly, using genuine components and proper process.
HLX Performance is a BMW specialist workshop in Wimborne, Dorset, providing professional timing chain replacement and preventative maintenance for N47 and N57 engines.
Why Timing Chains Fail
The rear-mounted timing chain design used in N47 and N57 engines is known to wear over time. Extended service intervals, lubrication issues and material fatigue can lead to chain stretch, worn guides and failing tensioners.
- Chain elongation over time
- Worn or damaged guides
- Tensioner wear or failure
- Extended oil service intervals
Affected BMW Models
N47 Engine Models
- 1 Series – 116d / 118d / 120d / 123d
- 3 Series – 316d / 318d / 320d / 325d
- 5 Series – 520d
- X1 / X3 diesel variants
- Mini diesel models
N57 Engine Models
- 3 Series – 330d / 335d
- 5 Series – 530d / 535d
- 6 Series / 7 Series diesel variants
- X3 / X4 / X5 / X6 diesel models
Warning Signs
- Rattling noise on cold start
- Noise increasing with temperature
- Metallic knocking from rear of engine
- Engine management warnings in severe cases
Failure can occur without warning. Preventative replacement is strongly recommended.
Replacement Package
- Cam chain, lower chain and oil pump chain replacement
- New guides and tensioners
- Sprocket replacement where required
- New seals and gaskets
- Engine oil and filter service
- Final inspection and validation checks
Why Genuine IWIS Components
We use genuine IWIS timing chain components. As an OEM supplier, IWIS chains are engineered for durability and long-term reliability compared to lower-quality aftermarket alternatives.
| Feature | Genuine Components | Aftermarket |
|---|---|---|
| OEM quality | ✔ | ✖ |
| Wear resistance | ✔ | Lower |
| Longevity | High | Reduced |
| Reliability | Consistent | Variable |
Our Process
- Engine removal for access to rear timing assembly
- Full replacement of chains, guides and tensioners
- Correct timing and torque procedures followed
- Oil service and final checks
Why Choose HLX Performance?
- BMW specialist workshop
- High-volume timing chain experience
- Correct tools and procedures used
- Focus on long-term reliability
- Serving Wimborne, Bournemouth and Dorset
Protect your engine with professional timing chain replacement carried out correctly.
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