Findapart

Second Hand Mercedes-Benz B-Class Timing Chain

Need a used Mercedes-Benz B-Class timing chain? Request a free quote from UK vehicle dismantlers and compare offers direct.

Enter your registration or select your vehicle

Find the right part faster and get quotes direct from UK breakers - free, and no obligation.

GB

Choosing the right used Mercedes-Benz B-Class timing chain

Used timing chains vary between vehicles - and whether you call it used, second hand or a replacement, matching the right one matters. These are the details breakers need to match the right part to your car - our request form asks them so you only hear from suppliers with the correct part:

Other used Mercedes-Benz B-Class parts

Used timing chain for other Mercedes-Benz models

Fitment questions

Does the Mercedes-Benz B-Class have a timing chain or a timing belt?

All petrol and diesel engines used in the Mercedes-Benz B-Class (W245, 2005–2011, and W246, 2011–2018) use a timing chain rather than a rubber timing belt, so there is no scheduled belt replacement interval. This applies across the range regardless of engine size or fuel type, though the exact chain configuration varies by engine code.

Will a timing chain from a 2009 B-Class fit my 2013 B-Class?

These are two completely different generations — the W245 ran from 2005 to 2011 and the W246 ran from 2011 to 2018 — and they use different engine families, so parts from one will not cross to the other. Even where engine displacements look similar on paper, the architecture changed between generations, making the chain and associated sprockets incompatible. Always match by engine code, not by year alone.

Does it matter which trim level my B-Class is — Sport, SE, or AMG Line — when buying a used timing chain?

No, trim level makes no difference to timing chain fitment whatsoever; Sport, SE, AMG Line and any other trim designation are cosmetic and equipment packages that do not alter the engine internals. What determines the correct chain is the engine code, which you can find on your V5C or via a VIN check. Give the engine code to the breaker and the trim name can be ignored entirely.

My B-Class W246 is a 2015 facelift model — does that affect which timing chain I need?

The W246 received a facelift around 2014–2015, but whether that boundary affects your timing chain depends on your specific engine code rather than the facelift date alone. In many cases the same engine ran across both pre- and post-facelift cars, meaning the chain is the same, but ancillary components and tensioner specifications can change mid-production. Confirm the exact engine code with your breaker against your registration to be certain before purchasing.

Does it matter if my Mercedes B-Class is petrol or diesel when sourcing a timing chain?

Yes, fuel type matters significantly because petrol and diesel engines in the B-Class are entirely different units with different chain layouts, tensioners, and guide configurations. A chain from a diesel engine such as an OM651 will not fit a petrol engine, and vice versa. Always provide your engine code — not just petrol or diesel — as this is the single most useful detail you can give a breaker.

Can I use a timing chain from a Mercedes A-Class or GLA on my B-Class?

Potentially yes, because Mercedes shared engine families across the A-Class (W176), B-Class (W246), and GLA (X156) of the same era, and where the engine codes match the internal components including the timing chain can be identical. However, you must confirm the engine codes are the same on both donor and recipient vehicles, as subtle specification changes can exist even within the same code across different models. Ask the breaker to cross-reference both registrations before agreeing the sale.