IWIS Timing Chains for BMW – Why We Use Genuine IWIS Components
Genuine IWIS Timing Chains for BMW Diesel Engines
At BMW Timing Chain, we specialise in BMW and MINI diesel timing chain replacement using genuine IWIS timing chains and components.
IWIS is one of BMW’s original equipment timing chain manufacturers and supplies timing chain systems used throughout BMW diesel engine ranges including the N47, N57, B37, B47 and B57 engines.
Unlike many aftermarket timing chain kits, genuine IWIS components are manufactured to OE specifications and utilise advanced TRITAN® coating technology to improve wear resistance, reduce friction and increase timing chain service life.
GENUINE IWIS TIMING CHAIN KIT
What's Included In A Genuine IWIS Timing Chain Kit?
A complete IWIS timing chain kit contains:
- 86 Link Upper Timing Chain
- 70 Link Lower Timing Chain
- 48 Link Oil Pump Chain
- Upper Guide Rails
- Lower Guide Rails
- Hydraulic Tensioners
- Camshaft Sprocket
- Fuel Pump Sprocket
- Oil Pump Sprocket
- Oil Spray Jet
- Seals & Fixings
Using genuine components ensures correct timing chain operation and long-term reliability.
IWIS TRITAN® COATING TECHNOLOGY
What Is TRITAN® Coating?
TRITAN® is IWIS’s advanced Chromium Nitride (CrN) pin coating technology.
The coating is applied using Physical Vapour Deposition (PVD), creating an extremely hard low-friction surface on the timing chain pins.
Benefits Of TRITAN® Technology
- Up to 50% improved wear protection
- Up to 20% lower friction
- Improved resistance to soot contamination
- Better resistance to fuel dilution
- Reduced chain elongation
- Increased timing accuracy
- Longer service life
This technology is particularly beneficial in modern BMW diesel engines where soot contamination can accelerate timing chain wear.
BMW N47 TIMING CHAIN LAYOUT
BMW N47 Timing Drive Overview
The BMW N47 timing drive system uses three separate timing chains:
- Upper Timing Chain (Crankshaft to Camshaft)
- Lower Timing Chain (Crankshaft to Fuel Pump)
- Oil Pump Chain
These components work together to maintain precise valve timing and fuel injection synchronisation.
Failure of any component within the timing chain system can lead to catastrophic engine damage.
BMW N47 TIMING CHAIN INSTALLED
Genuine Components Installed Correctly
This image shows a professionally installed IWIS timing chain system fitted to a BMW N47 diesel engine.
At BMW Timing Chain we replace:
- Timing Chains
- Guide Rails
- Tensioners
- Oil Spray Jet
- Sprockets (where required)
- Seals and Fixings
This ensures maximum reliability and OE quality repair standards.
HOW TRITAN® COATING WORKS
Protection Against Soot Particles
One of the main causes of timing chain wear in BMW diesel engines is soot contamination.
Microscopic soot particles become trapped between timing chain pins and bushings causing:
- Increased friction
- Accelerated wear
- Chain elongation
- Timing inaccuracies
TRITAN® coated pins provide:
- Harder wear surfaces
- Reduced friction
- Better oil retention
- Increased resistance to abrasive particles
This helps maintain accurate timing for longer.
IWIS vs AFTERMARKET TIMING CHAINS
Why Genuine IWIS Components Matter
| Feature | Genuine IWIS | Typical Aftermarket |
|---|---|---|
| OE Supplier To BMW | Yes | – |
| TRITAN® Pin Coating | Yes | – |
| Wear Protection | Excellent | Variable |
| Friction Reduction | Excellent | Variable |
| Soot Resistance | Excellent | Variable |
| Chain Stretch Resistance | Excellent | Variable |
| Guide Rail Quality | OE Standard | Variable |
| Tensioner Quality | OE Standard | Variable |
| Reliability | Excellent | Variable |
Why BMW Timing Chain Uses Genuine IWIS Components
We specialise in:
- BMW N47 Timing Chain Replacement
- BMW N57 Timing Chain Replacement
- BMW B37 Timing Chain Replacement
- BMW B47 Timing Chain Replacement
- BMW B57 Timing Chain Replacement
Every repair is carried out using high-quality components designed to provide long-term reliability and peace of mind.
FREQUENTLY ASKED QUESTIONS
Does BMW use IWIS timing chains?
Yes. IWIS is one of BMW’s original equipment timing chain manufacturers and supplies timing chain systems used throughout various BMW engine platforms.
What is TRITAN® coating?
TRITAN® is IWIS’s proprietary Chromium Nitride coating technology designed to reduce wear and friction at the chain pin interface.
Are IWIS chains better than aftermarket timing chains?
Genuine IWIS chains are manufactured to OE standards and offer superior wear resistance, accuracy and durability compared to many budget aftermarket alternatives.
Which BMW engines use IWIS timing chains?
Common engines include:
- N47
- N57
- B37
- B47
- B57
Need A BMW Timing Chain Replacement?
If your BMW diesel engine is showing symptoms of timing chain wear, contact our team today.
We Cover:
- Nottingham
- Derby
- Leicester
- Lincoln
- Sheffield
- Birmingham
- Nationwide Customers Welcome
CONTACT US NOW
Get in touch with BM Timing Chain Experts today and let our specialist team help keep your engine running at its best.
0115 9505010
Call us: Mon – Fri 9:00 – 17:00
Nottingham
6a Castle St, Sneinton, Nottingham NG2 4AE
info@bmwtimingchain.com
Drop us a line anytime!
Contact BM Diesel
Need expert diesel repairs, diagnostics, or servicing? Get in touch with BM Diesel today — we’re here to keep your vehicle running at its best.