Engines and Components› Engine Covers, Pans and Dress-Up Components
Moroso
Moroso 90-97 Mazda Miata Coolant Expansion Tank - Direct Bolt-In Replacement
SKU: M00R 63780
Easy — 1–2 hours
Description
Fabricated from aluminum for increased strength, this tank is a more durable alternative to the factory tanks that can fail under repeated high heat. The aluminum construction allows for customization through polishing, chroming, painting, or powder coating for a custom look. This expansion tank includes a billet aluminum cap.
Fitment
Fitment Guaranteed
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on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Moroso |
| Part Number | M00R 63780 |
Videos
NC Miata Moroso Coolant Tank Replacement || NC Track Build
Moroso Coolant Expansion Tank Install on an NC Miata!
NC Miata (2006 to 2015) - Installing a Moroso Coolant Overflow Tank
![MIATA MOROSO COOLANT RESERVOIR | #OMGMIATA | EP84 | [4K60]](https://img.youtube.com/vi/1FUnz-p7EFU/hqdefault.jpg)
MIATA MOROSO COOLANT RESERVOIR | #OMGMIATA | EP84 | [4K60]
Moroso Power Steering Tank Installed on an NC Miata
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Fixing the point of failure on the NC Miata! DaveFab coolant expansion tank.
How To Replace A MX-5 Miata Coolant Tank
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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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