Genuine Mazda Engine Side Mount Fixing Washer • 9995-11-030

Genuine Mazda Engine Side Mount Fixing Washer

Replacement Genuine Mazda engine-mount fixing washer for Mazda MX-5 Mk1 NA and Mk2/Mk2.5 NB models produced from 1990 to 2005.

The washer is fitted with the engine-side mounting hardware and provides a flat bearing surface beneath the corresponding retaining nut. It helps distribute the clamping load across the engine-mount bracket and protects the mounting surface as the fastener is tightened.

Four washers are used across the engine-side mounting arrangement. This listing supplies one Genuine Mazda washer, so order a quantity of four when renewing the complete set.

Fastener note: This washer is used with Mazda’s corresponding K-nut-style retaining fastener. These nuts are commonly treated as single-use components and should be inspected or renewed whenever the mounting hardware is dismantled.

• Part type: Plain fixing washer
• Common names: Engine-mount washer / side-mount washer / mounting-bracket washer
• Mazda catalogue description: Washer, Plain
• Location: Engine-side mounting brackets
• Function: Distributes fastener clamping load across the mounting surface
• Quantity fitted per vehicle: 4
• Quantity supplied: 1 washer
• Retaining nut included: No
• Mounting bolt or stud included: No
• Engine mount included: No
• Brand: Genuine Mazda
• Part No.: 9995-11-030
• MX-5 fitment: Mk1 NA and Mk2/Mk2.5 NB models

Typical reasons for replacement:

• Original washer missing during dismantling
• Washer heavily corroded
• Washer distorted or dished from overtightening
• Central aperture enlarged or damaged
• Engine mount or bracket replacement
• Restoration of original Mazda mounting hardware
• Replacement of previously fitted non-standard washers

Fitment advice: This listing is focused on the confirmed MX-5 engine-side mount application. Mazda also uses this washer in other locations and on other models, so the part number should be checked against the removed component where it is being ordered for a different installation.

Quantity advice: Four washers are required for the complete MX-5 engine-side mounting arrangement. This listing supplies one washer per order quantity.

Replacement advice: Inspect the corresponding retaining nuts, studs, mounting brackets and rubber engine mounts whenever the hardware is removed. Renew damaged or single-use fasteners rather than refitting corroded or distorted components.

Other items to consider: Check both engine mounts for splitting, collapse, oil contamination or separation from their metal plates. Inspect the engine-side brackets and chassis mounting points for corrosion, cracking or elongated apertures.

Useful tools / consumables: Suitable socket and spanner set, calibrated torque wrench, engine support beam or lifting equipment, penetrating fluid, wire brush and thread-cleaning tools.

Difficulty guide: DIY Difficulty: Moderate to Advanced. Replacing the washer alone is straightforward, but engine-mount work requires the engine to be safely supported before the mounting hardware is loosened.

Why Genuine Mazda? Genuine Mazda mounting washers match the original outside diameter, centre aperture, thickness and material specification. Correct dimensions help distribute the mounting load evenly and maintain the intended fastener clamping arrangement.

What’s in the box: One Genuine Mazda engine-side mount fixing washer, part number 9995-11-030.

Installation notes: Support the engine securely before loosening any engine-mount fasteners. Remove the original hardware and inspect the stud, nut, bracket and mounting surface. Position the replacement washer flat against the bracket, ensuring that it is not trapped at an angle. Install the correct retaining nut and tighten the mounting hardware progressively to the applicable Mazda specification. Remove the engine support only after confirming that all mountings are secure and correctly aligned.