Genuine Mazda Plastic Heat Shield Retaining Push-In Stud • NE51-56-146

Genuine Mazda NE51-56-146 Plastic Heat Shield Retaining Push-In Stud

Replacement Genuine Mazda plastic retaining stud for Mazda MX-5 Mk3, Mk3.5 and Mk3.75 / NC models with 1.8L and 2.0L petrol engines from 2005/2006 to 2015 listed in the compatibility table.

This push-fit plastic fastener is used to secure an underbody, exhaust-system or catalytic-converter heat shield to its mounting point. Its retaining profile grips the compatible hole or mounting location and keeps the lightweight shield correctly positioned.

Secure heat-shield mounting helps prevent vibration, rattling and contact with surrounding bodywork or exhaust components. The fastener also allows the shield to be retained without using a conventional threaded nut or bolt.

This listing supplies one Genuine Mazda plastic retaining stud. Several may be fitted to the vehicle, and the exact quantity required depends on the heat shield, installation position and number of damaged or missing retainers.

Replacement may be required where the original stud has become brittle, split, distorted, loose or damaged during removal. A failed retainer can allow the heat shield to vibrate or produce a metallic rattling noise, particularly at idle or at particular engine speeds.

• Part type: Plastic retaining push-in stud / heat-shield clip
• Primary use: Secures an underbody or exhaust-system heat shield
• Location: Vehicle underside / catalytic-converter or exhaust heat-shield area
• Vehicle application: Mazda MX-5 Mk3, Mk3.5 and Mk3.75 / NC
• Engine applications: 1.8L L8-DE and 2.0L LF-VE
• Mounting type: Push-in
• Quantity per vehicle: Application-dependent; several may be fitted
• Quantity supplied: One retaining stud
• Material: Plastic
• Brand: Genuine Mazda
• Part No.: NE51-56-146
• Also referenced as: NE5156146

Fitment advice: Compare the original retainer and mounting-hole arrangement before installation. This fastener is confirmed for the MX-5 NC range, but several different clips and retainers can be used around the vehicle depending on the panel or shield being secured.

Other items to consider: When changing this part, you may also want to consider purchasing any adjoining heat-shield clips, metal speed nuts, mounting bolts or washers that have become corroded, loose or damaged during removal.

Useful tools / consumables: Plastic trim-removal tool, panel-clip pliers, small non-damaging pry tool, penetrating fluid for adjoining metal fasteners and suitable axle stands or vehicle-lifting equipment.

Difficulty guide: DIY Difficulty: Easy. Installation normally involves aligning the retainer with the compatible mounting hole and pressing it evenly into place. Safe access beneath the vehicle may be required.

Why Genuine Mazda? Genuine Mazda retaining clips are manufactured to the intended dimensions, gripping profile and material specification. Using the correct OE fastener helps maintain secure heat-shield retention and compatibility with the original Mazda mounting point.

What’s in the box: One Genuine Mazda plastic heat-shield retaining push-in stud, part number NE51-56-146.

Installation notes: Remove any remains of the damaged retainer and inspect the heat shield and mounting hole before installation. Align the new stud squarely and press it into place without twisting or applying excessive force. Confirm that the shield is held securely and does not contact the exhaust or surrounding bodywork.