1.2 Puretech engine: this company offers a chain conversion kit

Long criticized for its reliability problems, the 1.2 PureTech engine from the Stellantis group, despite its name change to Turbo 100, continues to make headlines. But this time, it's not for a new controversy, but rather for an alternative solution that could well interest many owners: a kit that allows the famous «oil-bath» timing belt to be replaced by a chain.

A well-known weakness of the first generations

The first generations of the PureTech engine, notably produced between 2014 and 2017, have accumulated criticism. At issue was a timing belt immersed in engine oil, which was supposed to reduce friction and improve efficiency. On paper, the idea was attractive. In reality, it has often resulted in premature damage. The belt can crack, disintegrate or swell, leaving residues in the oil circuit. The result: a clogged strainer, poor lubrication and, in the most serious cases, engine failure. A problem common enough to affect the resale value of vehicles fitted with this engine.

A conversion to the channel to turn the page

To deal with this situation, a specialist company, Pro Chain, now offers a radical solution: convert the timing system to a chain. In concrete terms, it's a complete kit that replaces the belt with a timing chain, reputed to be more robust and durable. The kit includes all the necessary components: chain, sprockets, guides, tensioner and even a suitable oil supply line. The whole package has been designed as a «plug and play» solution, i.e. without any major engine modifications. Another important point is that the installation process is similar to that of a conventional belt replacement, making it easier for professionals to do the job.

Two kits depending on engine type

Not all PureTech engines are the same, and Pro Chain takes this into account. The company offers two versions of its kit: one for naturally-aspirated engines and another for turbocharged engines. This distinction is essential, as turbocharged versions present significant mechanical differences. Each kit is therefore specifically adapted to the characteristics of each configuration, with compatibilities defined according to the engine codes (such as EB2, EB2DT, etc.) found in the technical documentation or VIN number.

Solution reserved for professionals

Please note, however, that this solution is not directly accessible to the general public. The kit is intended for automotive professionals only. In concrete terms, garages and mechanics must order it, then offer the conversion to their customers. Another point to bear in mind: the kit is currently on pre-order, with the first deliveries expected in the second half of 2026. The quantities announced are limited, indicating a gradual launch.

The kit is priced at between 830 and 950 euros, excluding labor. Once installation is taken into account, the bill will easily exceed 1,000 euros. A cost that may seem high, but should be put into perspective. A standard belt replacement already costs around 500 euros, not counting any ancillary problems. Over time, and with several interventions, conversion to a chain can therefore prove profitable.

Beyond the financial aspect, this transformation could also reassure future buyers when it comes to resale. A chain-converted PureTech engine could inspire more confidence than one still fitted with its original belt.

With the third-generation PureTech engine, Stellantis seems to have corrected many of the problems. But for older models still on the road, this alternative solution comes at just the right time. It's unlikely to make the debate surrounding this engine disappear altogether, the Next solution at least offers a concrete way out for the most worried owners. An initiative that could well find its audience, especially if the initial feedback proves positive.