HLX Performance is a recognised BMW specialist in Wimborne, Dorset. We provide precise diagnostics, replacement, and preventative solutions for N47 and N57 timing chains to safeguard your engine and investment.

Why N47 & N57 Timing Chains Require Attention

The rear-mounted timing chain design is prone to wear over time. Insufficient lubrication, extended service intervals, and chain material fatigue can lead to elongation, worn guides, and failing tensioners.

Chain elongation produces a rattle that accelerates if left unchecked. Failure can result in catastrophic engine damage.

• Chain stretch due to material fatigue
• Worn or fractured guides
• Failing hydraulic tensioners
• Extended factory service intervals

Affected BMW Models

Warning Signs of Timing Chain Wear

• Rattling noise from rear of engine on cold start
• Noise increasing as engine warms
• Metallic knocking or scraping sounds
• Engine management warnings in advanced cases
• Failure may occur without warning

Many engines fail without notice. Early replacement is strongly advised.

Our Comprehensive N47 / N57 Replacement Package

Why Genuine IWIS Chains Matter

Lifetime Warranty

Our Specialist Process

• Engine removed to access rear-mounted timing assembly
• All chains, guides, tensioners, and sprockets replaced
• Torque and timing procedures meticulously followed
• Fresh oil and filter fitted
• Final validation before return

Why Choose HLX Performance?

• Recognised N47 & N57 specialists
• High-volume experience
• Only Genuine IWIS components
• Lifetime warranty
• BMW specialist knowledge and facilities
• Wimborne, Dorset – serving Bournemouth & Ringwood