Genuine Mazda Front Brake Disc Dust Shield / Backing Plate – LH • N243-33-271

Genuine Mazda N243-33-271 Left-Hand Front Brake Disc Dust Shield / Backing Plate

Replacement Genuine Mazda left-hand front brake disc dust shield for Mazda MX-5 Mk4 ND and RF models fitted with the standard, non-Brembo front brake system.

This pressed-steel shield is positioned behind the left-hand front brake disc. It helps protect the brake disc, caliper, wheel bearing and surrounding hub components from stones, dirt, road debris and direct water spray.

The shield mounts between the front steering upright and wheel-bearing assembly. Correct shape and positioning are important because the shield operates close to the rotating brake disc and must maintain adequate clearance throughout normal wheel rotation.

Brake dust shields are continuously exposed to moisture, road salt, debris and repeated brake-temperature cycles. Over time, corrosion can weaken the outer edge or mounting area, causing the shield to distort, loosen or rub against the brake disc.

This is a handed component for the left-hand front side only. One left-hand shield is fitted per vehicle, and this listing supplies one Genuine Mazda shield.

Important brake-system restriction: Mazda catalogues this shield for vehicles without the factory Brembo front brake package. Brembo-equipped vehicles may use a different shield profile, so check the original component before ordering for a Brembo model.

• Part type: Front brake disc dust shield / backing plate
• Mazda catalogue description: Cover (L), Dust
• Primary use: Protects the front brake and hub components from road debris and water spray
• Location: Behind the left-hand front brake disc
• Position: Left-hand front
• UK position: Nearside front
• Handed component: Yes
• Brake compatibility: Standard non-Brembo front brake arrangement
• Factory Brembo compatibility: Not confirmed / excluded from this listing
• Quantity fitted in this position: 1
• Quantity supplied: 1 dust shield
• Right-hand counterpart: N243-33-261
• Brake disc included: No
• Wheel hub or bearing included: No
• Mounting hardware included: No
• Brand: Genuine Mazda
• Part No.: N243-33-271
• Also referenced as: N24333271
• MX-5 fitment: Mk4 ND and RF models with standard front brakes

Possible reasons for replacement:

• Heavy corrosion or perforation
• Shield rubbing against the brake disc
• Scraping or rattling from the left-hand front wheel
• Outer edge bent by road debris or previous brake work
• Mounting area weakened or damaged
• Damage during wheel-bearing or hub removal
• Restoration of the front brake and hub assembly

Fitment advice: This listing is for the left-hand front shield. The corresponding right-hand shield is Mazda part number N243-33-261. Confirm that the vehicle uses the standard non-Brembo front brake arrangement, particularly on Club, Sport or special-edition vehicles that may have been equipped with factory or aftermarket Brembo brakes.

Other items to consider: Inspect the right-hand shield, front brake discs, brake pads, calipers, wheel bearings, hubs, ABS wiring and associated retaining hardware. Replace any component that is heavily corroded, damaged or unsuitable for reuse.

Useful tools / consumables: Suitable socket and spanner set, breaker bar, calibrated torque wrench, penetrating fluid, brake cleaner, wire brush and appropriate wheel-bearing or hub-removal equipment.

Difficulty guide: DIY Difficulty: Advanced. The brake caliper and disc must be removed, and the dust shield is mounted behind the wheel-bearing assembly. Suitable hub-removal tools and careful handling of the ABS equipment are required.

Why Genuine Mazda? Genuine Mazda brake dust shields are formed to match the original steering-upright mounting points, wheel-bearing centre, brake-disc clearance and surrounding suspension geometry. Correct dimensions help prevent contact with the rotating disc and ensure compatibility with the original standard brake assembly.

What’s in the box: One Genuine Mazda left-hand front brake disc dust shield / backing plate, part number N243-33-271.

Installation notes: Raise and support the vehicle safely, then remove the left-hand front brake caliper, caliper carrier and brake disc in accordance with the applicable Mazda workshop procedure. Remove the wheel-bearing assembly carefully without damaging the bearing mounting face or ABS equipment. Clean the upright and mounting surfaces, then fit the replacement shield in the original orientation. Reinstall the bearing and braking components to the applicable Mazda specifications. Rotate the hub and disc by hand before refitting the wheel to confirm that the shield is correctly seated and does not contact the disc.