Genuine Mazda 99564-1800 Gearbox / Differential Drain Plug Washer
Replacement Genuine Mazda sealing washer for Gearbox, differential, transfer and related drain/fill plug applications where this Mazda washer reference is specified.
It is designed to create a reliable seal between the drain or fill plug and the casing, helping prevent fluid leaks after servicing.
This washer is commonly replaced whenever the differential, transfer case or related drivetrain oil is drained, or when the original washer is crushed, distorted, corroded or leaking.
Genuine Mazda sealing washers are manufactured to Mazda’s OE specification for correct fit, material thickness and sealing performance.
- Part type: Drain plug washer / gasket / seal washer
- Primary use: Differential / transfer / carrier drain or fill plug sealing washer
- Brand: Genuine Mazda
- Part No.: 99564-1800
- Also referenced as: 9956-41-800 / 995641800
- Sold individually
Why Genuine Mazda? Genuine Mazda components are designed to match the original specification of the vehicle. For sealing washers, this helps ensure the correct crush, sealing face contact and durability when used with the correct drain or fill plug.
What’s in the box: One Genuine Mazda drain plug washer / gasket.
Installation notes: Replace the washer whenever the plug is removed where Mazda specifies a new sealing washer. Always clean the plug and sealing face before refitting and tighten to the correct Mazda workshop manual torque specification.
| Make | Model | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel / Notes |
|---|---|---|---|---|---|---|
| Mazda | MX-5 Mk1 (NA) | NA6C / NA8C | 1989–1998 | 90–131 | B6-ZE, BP-ZE | Petrol; differential drain/fill plug washer. Verify by VIN/chassis. |
| Mazda | MX-5 Mk2 / Mk2.5 (NB / NB-FL) | NB6C / NB8C | 1998–2005 | 110–146 | B6-ZE, BP-ZE, BP-4W, BP-Z3 | Petrol; differential drain/fill plug washer. Verify by VIN/chassis. |
| Mazda | MX-5 Mk3 / Mk3.5 / Mk3.75 (NC) | NC | 2005–2015 | 126–160 | L8-DE, LF-VE | Petrol; differential drain/fill plug washer. Soft-top & PRHT. Verify by VIN/chassis. |
| Mazda | MX-5 Mk4 / RF (ND) | ND / NDERC | 2015–Present | 131–184 | P5-VPS, PE-VPS | Petrol; differential drain/fill plug washer. Soft-top & RF. Verify by VIN/chassis. |
| Mazda | Mazda3 | BK / BL / BM / BN / BP | 2004–2026 | Various | Various | Washer/gasket for differential / transfer / drain plug applications where specified. Verify exact location by VIN. |
| Mazda | CX-5 | KE / KF | 2013–2026 | Various | Various | Differential / transfer / carrier washer where specified; commonly AWD driveline applications. Verify by VIN. |
| Mazda | CX-9 | TB / TC | 2010–2023 | Various | Various | Differential / transfer / carrier washer where specified; verify by VIN/chassis. |
| Vehicle Manufacturer | OEM Reference Number |
|---|---|
| Mazda | 99564-1800 |
| Mazda | 9956-41-800 |
| Mazda | 995641800 |