Mercedes-Benz CLE Seat Belt Pretensioner Replacement Parts

Yes, all variants of the Mercedes-Benz CLE (introduced from 2023 onwards as a two-door coupé and convertible) are fitted with seat belt pretensioners as standard — they are a fundamental part of the passive safety system on every trim level. Because they are safety-critical, single-use components that fire during a collision, a used pretensioner should only be sourced from an undeployed vehicle and must be fitted by a qualified technician. Always confirm with the breaker that the unit they are supplying has never been triggered.

The CLE was launched in 2023 and, as a recently introduced model, no facelift or generation change has occurred within the 2023–2025 period, so parts from across that range are broadly from the same generation. That said, pretensioner variants can differ between production runs even within the same generation, so you should confirm the exact part compatibility with the breaker using your registration number before purchasing. Never assume fitment without that check on a safety-critical part like this.

Trim level and seat specification can affect pretensioner fitment on the CLE, as different seat types (for example, standard seats versus AMG sports seats or Burmester comfort seats available on higher trims) may use different belt assemblies with different pretensioner units. The engine variant itself — 200, 300, 450 and so on — does not affect which pretensioner is fitted. Confirm the exact trim and seat type on your vehicle against the breaker's donor car using your registration to make sure you're getting the right unit.

Yes, body style can affect fitment — the CLE Coupé and CLE Cabriolet have different bodyshells and interior architectures, which can mean differences in the seat and belt assembly design. You should always tell the breaker which body style your car is (coupé or cabriolet) when requesting a quote. Confirm the donor vehicle's body style matches yours before agreeing to purchase.

Yes, seat belt pretensioners are side-specific — a nearside (NS, passenger side) pretensioner is not interchangeable with an offside (OS, driver side) unit. When contacting a breaker, always specify whether you need the NS or OS pretensioner, and also clarify whether it is for a front or rear seat position. Getting the side wrong means the part will not fit correctly and could compromise safety.

Seat belt pretensioners are safety-critical, pyrotechnic devices that form part of the SRS (Supplemental Restraint System), and professional fitting by a qualified technician is strongly recommended — incorrect installation can prevent the system from working in a crash or cause accidental deployment. In the UK, most reputable garages and Mercedes-Benz specialists will reset the SRS warning light and verify system integrity after fitting. A used pretensioner must come from a vehicle where it was never deployed, and the breaker should be able to confirm this.