The PureTech Wet Belt
Problem Is
Finally Fixed.
Pro-Chain has engineered a complete bolt-on timing chain conversion kit for 1.0 & 1.2 PureTech engines — both naturally aspirated and turbocharged. We’re fitting them in Stevenage from £829 + fitting.
Why PureTech Wet Belts Are a Known Problem
The PureTech engine family — covering the 1.0, 1.2 and 1.6 litre variants used across PSA and Stellantis vehicles — uses a timing belt that runs in oil. In theory, this was an elegant solution: a compact, quiet belt system that uses engine oil for lubrication, doing away with the complexity of a dry belt or a traditional chain. In practice, it became one of the most problematic timing systems in modern automotive history.
- Wet belts degrade faster than manufacturers initially projected, with real-world failures occurring from as low as 40,000 miles
- Oil contamination accelerates belt deterioration, especially if oil change intervals slip
- Belt failure is catastrophic — on these engines, the valves will meet the pistons
- Replacement intervals were revised downwards multiple times, catching many owners off guard
- Each replacement is a substantial job — not a simple belt swap
- The cost adds up across a vehicle’s lifetime, often running to thousands of pounds
At TGPP Autocare, we’ve replaced more PureTech wet belts than we care to count. We know the job inside out — and we’ve been waiting for a proper solution. That solution has arrived.
The Solution
Introducing Pro-Chain:
Timing Chain Conversion
for PureTech Engines
Pro-Chain is a specialist engineering company that has developed what the industry has needed for years: a complete, bolt-on timing chain conversion kit specifically designed for PureTech engines. No modifications to the engine block. No specialist tooling you don’t already have. Just a permanent upgrade from a wet belt system to a robust, reliable timing chain — the same way performance and longevity-focused engines have been built for decades.
Pro-Chain conversion kits replace the entire wet belt timing system with a precision-engineered chain drive, including everything required to complete the conversion. Once fitted, your engine no longer has a wet belt to worry about. It’s a one-time fix.
Because the installation mirrors the procedure for a wet belt replacement, and uses the same timing tools already in use at specialist garages, TGPP Autocare can offer this conversion without any compromise on quality or accuracy. This is precisely the kind of technical job we do every week.
The Pro-Chain Kits
Two Kits. Every
PureTech Variant
Covered.
Pro-Chain offers separate kits for naturally aspirated and turbocharged PureTech engines — because the turbo variants have meaningfully different mechanical requirements and a single kit cannot safely do both. Select the correct kit for your engine below.
Chain Conversion Kit
for NA Engines
- Timing chain
- Sprockets
- Chain guides
- Tensioner
- Oil supply line
- All required hardware
Chain Conversion Kit
for Turbo Engines
- Timing chain
- Sprockets
- Chain guides
- Tensioner
- Oil supply line
- All required hardware
Both kits are developed as bolt-on solutions requiring no modification to the engine block. The installation procedure follows the same methodology as a wet belt replacement using identical timing tools.
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Engine Compatibility
Is Your Engine
Compatible?
Each kit is engineered for specific PureTech engine variants. Find your engine code below. Your engine code can be found in your vehicle’s technical documentation, in characters 6, 7 & 8 of your VIN, or stamped directly on the engine block.
```| Full Engine Code | VIN Code (Pos. 6–8) | Block Stamp |
|---|---|---|
| EB0 | ZMZ | ZM01 |
| EB2 | HMZ | HM01 |
| Full Engine Code | VIN Code (Pos. 6–8) | Block Stamp |
|---|---|---|
| EB2DT | HNZ | HN01 |
| EB2DTS | HNY | HN02 |
| EB2ADT | HNP | HN05 |
| EB2ADTD | HNK | HN05 |
| EB2ADTD | HNE | HN05 |
| EB2ADTS | HNS | HN05 |
| EB2ADTX | HNN | HN07 |
Not sure which engine you have? Give us a call on 01438 232556 with your registration plate and we’ll look it up for you.
Compatible Vehicles
Which Cars Does
This Cover?
The PureTech engine family powers an enormous number of vehicles sold across Europe and the UK. If you drive one of these brands, there’s a strong chance your car is eligible.
Confirm your exact engine code using the compatibility table above, or contact TGPP Autocare directly.
Why TGPP Autocare
Why Have TGPP
Fit Your Pro-Chain
Conversion?
PureTech
Specialists
We’ve been replacing PureTech wet belts since the first vehicles came out of warranty. We know these engines in detail — their quirks, their failure modes, and how to handle them correctly.
RAC Approved
Garage
TGPP Autocare is an RAC Approved independent garage in Stevenage. You get the quality assurance of a main dealer with the pricing advantage of an independent specialist.
Five-Star
Rated
Our Google reviews speak for themselves. We’re proud of our reputation and we protect it on every job — no corners, no shortcuts, no comebacks.
0% Finance
Available
Spread the cost of your conversion with PaymentAssist 0% finance. Plans available over 3, 4, 6 and 9 months with no minimum spend requirement.
Common Questions
Frequently Asked
Questions
Get Booked In
Stop Replacing It.
Permanently Fix It.
Register your interest in the Pro-Chain conversion or book any PureTech timing work with TGPP Autocare in Stevenage. We’re ready when the kits land — and fitting slots will fill fast.
Book OnlineTGPP Autocare Ltd • Unit 8, Chells Industrial Units, Chells Way, Stevenage SG2 0LQ • RAC Approved
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