Mazda CX-5 Sill Replacement Parts

The sill (also called a sill panel or rocker panel) is the structural body panel that runs along the underside of the door apertures, between the front and rear wheel arches on each side of the car. All Mazda CX-5 variants have sills, so whether you have a first or second generation model, NS or OS, this is a genuine part you can source from a breaker. They commonly need replacing due to corrosion or accident damage.

No — the first-generation CX-5 ran from 2012 to 2017, and the second generation from 2017 onwards, and these are different platforms with different body structures, so the sill pressing will not interchange between them. When sourcing from a breaker, make sure you specify which generation you have, and give them your registration so they can confirm the exact year. Mixing generations will result in a panel that does not align correctly.

No — engine choice and drivetrain layout do not affect the sill panel, as this is purely a body part determined by the generation and body structure of the car. The CX-5 is a five-door SUV throughout its production, so there are no body-style variants to worry about either. Simply match the generation and side (NS or OS) and you are looking at the same pressing regardless of what is under the bonnet.

Trim level does not affect the structural sill panel itself, as the pressing is the same across SE, SE-L, Sport, and GT Sport grades on the same generation. However, be aware that some trim levels feature cladding, body-coloured inserts, or side skirt add-ons over the top of the sill, so the finished appearance may differ between a breaker's car and yours. Confirm with your breaker whether the sill panel alone is what you need, or whether you also require any trim pieces that sit on top of it.

This is a boundary you need to treat carefully: the first-generation CX-5 ran from 2012 to 2017 and the second generation also launched in 2017, so a 2017 donor car could be either generation depending on exactly when it was built. Your 2015 car is firmly first-generation, so you need to confirm with the breaker that any 2017 donor is also first-gen before assuming the sill will fit. Give the breaker both registrations so they can check the platforms match.

KF is the internal Mazda platform code for the second-generation CX-5, produced from 2017 onwards, while the first generation is often referred to as the KE. If your CX-5 is a 2017-onwards model, a KF sill is correct; if you have a 2012–2017 first-generation car, you need a KE part instead. Confirm the platform code with your breaker against your registration to make sure you are getting the right panel.