Gearbox rear oil seal

Genuine Mazda gearbox rear oil seal

Mazda MX-5 Gearbox Rear Oil Seal (NA / NB / NC)

Maintain smooth performance and stop unwanted gearbox leaks with this genuine Mazda gearbox rear oil seal, designed for MX-5 models across multiple generations. It ensures a perfect seal at the gearbox output shaft where it meets the prop-shaft, protecting your transmission from oil loss and contamination.

Key Features & Benefits

• Genuine Mazda quality – Engineered to original specifications for a precise, leak-free fit.

• Durable construction – Manufactured from high-grade, oil-resistant materials to withstand heat and wear.

• Wide compatibility – Suitable for Mazda MX-5 Mk1 (NA), Mk2 (NB) and Mk3 (NC) models (excluding NC 6-speed gearboxes).

• Easy installation – Direct replacement for the original seal; simple to fit when servicing or overhauling the gearbox.

• Essential protection – Prevents oil leaks and protects your gearbox internals from costly damage.

Fitment & Compatibility

• Models: MX-5 Mk1 (1989–1998), Mk2 (1998–2005), Mk3 (2005–2014)

• Excludes: NC 6-speed gearboxes

• Part Type: Gearbox output shaft / rear oil seal

• Part Number: M507-17-335A (also known as GROS123)