Genuine Mazda Rear Brake Disc Dust Cover / Backing Plate – Left or Right
Replacement Genuine Mazda rear brake disc dust cover for all Mazda MX-5 Mk3, Mk3.5 and Mk3.75 NC models with 1.8- or 2.0-litre petrol engines.
The backing plate is positioned behind the rear brake disc and is pressed onto the rear wheel hub assembly. It helps shield the inner braking surface and surrounding caliper area from direct exposure to road debris, standing water and contamination.
A heavily corroded, fractured or distorted backing plate can contact the rotating brake disc and produce scraping or metallic rubbing noises. Corrosion commonly develops around the centre mounting area and outer edges because the component is continuously exposed beneath the vehicle.
The same component is used on both the left- and right-hand sides of the vehicle. Two plates are fitted per MX-5 NC, while this listing supplies one Genuine Mazda backing plate. Order a quantity of two when replacing both sides.
Side information: NF47-26-261A is not handed. The same Mazda reference fits either the left-hand or right-hand rear hub.
- Part type: Rear brake disc dust cover / backing plate
- Common names: Rear brake shield / splash shield / disc guard / brake backing plate
- Mazda catalogue description: Cover, Dust
- Fitting position: Rear left or rear right
- Side specification: Same component used on both sides
- Location: Pressed onto the rear wheel hub assembly behind the brake disc
- Function: Shields the inner brake disc and caliper area from road contamination
- Quantity fitted per vehicle: 2
- Quantity supplied: 1 backing plate
- Rear wheel hub included: No
- Wheel bearing included: No
- Brake disc included: No
- Brake caliper included: No
- Mounting or hub hardware included: No
- Brand: Genuine Mazda
- Part No.: NF47-26-261A
- Previous Mazda reference: NF47-26-261
- MX-5 fitment: All Mk3, Mk3.5 and Mk3.75 NC models
Typical reasons for replacement:
- Backing plate heavily corroded
- Centre mounting area fractured or deteriorated
- Plate contacting the rotating brake disc
- Scraping or metallic rubbing noise from a rear wheel
- Outer edge bent or distorted
- Sections of the original shield broken away or missing
- Rear wheel-hub or bearing replacement
- Rear brake or suspension refurbishment
- Original backing plate previously removed
Quantity advice: Two plates are used per vehicle, one on each rear hub. This listing supplies one plate per order quantity.
Fitment advice: NF47-26-261A fits either rear side and is listed across the complete MX-5 NC range. It should not be confused with the separate side-specific front backing plates.
Installation advice: The backing plate is pressed onto the rear hub assembly. Installation may therefore require removal and dismantling of the rear hub or bearing arrangement rather than simply removing the brake disc.
Replacement advice: Inspect the rear wheel bearing, hub, mounting surfaces and surrounding suspension components while the assembly is dismantled. A replacement shield will not correct wheel-bearing play, hub damage or excessive brake-disc runout.
Brake inspection advice: Check the rear brake disc for corrosion, scoring and minimum thickness. Inspect the brake pads, caliper slider pins, piston dust boot, handbrake mechanism, flexible brake hose and ABS sensor wiring while access is available.
Other items to consider: Inspect the backing plate on the opposite side, as both components are normally exposed to similar road and corrosion conditions. Consider replacing both together where deterioration is comparable.
Useful tools / consumables: Vehicle lifting equipment, axle stands, socket set, breaker bar, calibrated torque wrench, hub-removal or pressing equipment, penetrating fluid, wire brush and brake cleaner.
Difficulty guide: DIY Difficulty: Advanced. Replacement requires rear brake dismantling and removal or disassembly of the hub arrangement so the plate can be pressed into its correct position.
Why Genuine Mazda? Genuine Mazda backing plates match the original hub fit, brake-disc clearance, pressed profile and surrounding component geometry. Correct dimensions help prevent contact with the rotating disc while retaining the intended protection around the inner braking surface.
What’s in the box: One Genuine Mazda rear brake disc dust cover / backing plate, suitable for either side, part number NF47-26-261A.
Installation notes: Raise and support the vehicle safely, remove the rear wheel, brake caliper and brake disc, then dismantle the rear hub assembly following the applicable Mazda workshop procedure. Remove the original backing plate and clean the hub and mounting surfaces. Press the replacement plate into position in the correct orientation without distorting it. Reassemble the hub and brake components using the specified tightening procedures. Confirm that the brake disc rotates freely without contacting the plate and operate the brake pedal before driving.
| Make | Model | Sub Variant | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Mazda | MX-5 | Mk3 NC1 – 1.8 / 2.0 / 2.0 Sport | NC / NCEC | 2005–2009 | 126–160 | L8-VE / LF-VE | Petrol | Manual / Automatic | Rear brake disc backing plate; same component fits left or right; pressed onto rear hub assembly; two required per vehicle |
| Mazda | MX-5 | Mk3.5 / Mk3.75 NC2/NC3 – 1.8 / 2.0 / 2.0 Sport | NC / NCEC | 2009–2015 | 126–160 | L8-VE / LF-VE | Petrol | Manual / Automatic | Rear brake disc backing plate; same component fits left or right; pressed onto rear hub assembly; two required per vehicle |
| Vehicle Manufacturer | OEM Reference Number |
|---|---|
| Mazda | NF47-26-261A |
| Mazda | NF47-26-261 |