Mercedes-Benz CLS Seat Belt Replacement Parts

The CLS has run across two main generations: the first generation (C219) covered 2004 to 2010, and the second generation (C218) ran from 2011 to 2018 with a facelift in 2014. Seat belts are generally generation-specific, so a belt from a C219 is very unlikely to suit a C218 and vice versa. Within the same generation, cross-year fitment is more plausible, but always confirm with the breaker against your registration before buying.

The 2014 facelift sits within the second-generation C218 (2011–2018), so the underlying body structure did not change at that point. In principle, a belt from a 2012 C218 and one from a 2016 C218 may be compatible, but subtle changes to pretensioner variants or anchorage points can occur at a facelift even without a full generation change. Confirm with the breaker against your exact registration rather than assuming fitment across the 2014 boundary.

For the CLS, trim level can matter for seat belts because seat style and mounting configurations sometimes differ between, for example, an AMG Line and a standard SE specification. If your car has sports seats or an AMG package, make sure you tell the breaker this, as the belt retractor or anchor plate may differ from a standard-spec car. That said, if your car is standard specification, trim alone is less likely to cause a difference — but it is still worth checking with the breaker against your registration.

Yes, seat belts are side-specific — the driver's side (OS, offside, right-hand side in UK right-hand-drive cars) and the passenger's side (NS, nearside, left-hand side) are not interchangeable. Always tell the breaker clearly which side you need, and also specify whether it is a front or rear belt and which seating position, as the CLS has individual rear seats rather than a bench. Getting the side and position wrong means the belt will not locate correctly.

CLS seat belts incorporate pyrotechnic pretensioners, which makes them safety-critical components — professional fitting by a qualified mechanic is strongly recommended rather than DIY installation. A pretensioner seat belt that has been deployed in a previous accident is a single-use item and must never be refitted; always confirm with the breaker that the belt you are buying has never been triggered. If you have any doubt about whether the pretensioner variant from a donor car matches your specific SRS system, check with the breaker against your registration before purchasing.

Engine type has no bearing on seat belt fitment for the CLS; the belts are interior parts that match by generation, body, seating position, and trim specification rather than by what is under the bonnet. Focus instead on confirming the correct generation (C219 2004–2010 or C218 2011–2018), the side, the seating position, and your trim level when speaking to the breaker. This means a donor car from a diesel CLS is just as relevant as one from a petrol, all else being equal.