Drivetrain› Differentials and Rear-End Components
Mazda
3.909 Ring and Pinion Set
SKU: M037-27-110B
Moderate — 2–4 hours
Description
It is important to note specific fitment exclusions: this set does not fit RX3 SP models, RX4, or Cosmo vehicles. Ensure your differential is a non-Turbo variant for proper installation and function.
Fitment
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Available on iOS & Android
Specifications
| Brand | Mazda |
| Part Number | M037-27-110B |
| Category | Drivetrain |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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