Timing chain replacement cost
A timing chain replacement typically costs £680–£1,300 at a UK independent garage, the median across 650+ models in our database. It is dearer than a cambelt because the chain usually lives inside the engine, behind more dismantling.
Chain vs belt, know which you have
A cambelt is a rubber belt changed on a schedule, typically £320–£550. A chain is metal, runs in oil and has no scheduled change, but its tensioners and guides wear. If you hear a metallic rattle for a few seconds on a cold start that goes away, that is the classic stretched chain or tired tensioner sound, get it checked.
What it costs
| Job | Typical UK independent price |
|---|---|
| Timing chain kit (chain, tensioner, guides), fitted | £680–£1,300 |
| Tensioner only (where accessible) | £250–£500 |
| Big or awkward engines (chain at gearbox end, V6/V8) | £1,300–£2,500+ |
Engines with a reputation
Some engines are known for early chain trouble: certain 1.2 TSI and 1.4 TSI VW-group petrols, BMW and Mini N47/N13 era engines, some Nissan and Vauxhall petrol units. If you own one, take the cold rattle seriously and use the right oil at the right interval, oil condition is what kills chains.
Why oil changes matter here
The chain and its hydraulic tensioner are lubricated by engine oil. Long intervals and cheap oil wear the chain and guides years early. A £60 oil service habit is genuinely the cheapest timing chain insurance there is.
Common questions
Do timing chains need replacing like cambelts?
Not on a schedule. Most last the life of the engine, but tensioners and guides can wear, especially on engines with a known weakness or a patchy oil history.
What does a failing timing chain sound like?
A metallic rattle on cold start that fades after a second or two is the classic early sign. A constant rattle or the engine running rough with timing faults logged means stop driving it.
What happens if the chain jumps or snaps?
On most modern engines the valves meet the pistons, which usually means a new engine. That is why the cold-start rattle is worth £1,000 of attention rather than £5,000 of regret.
Why is a chain job so much dearer than a cambelt?
The chain typically lives inside the timing cover, often at the flywheel end on some engines, so there is far more dismantling. The kits themselves also cost more than belt kits.