Will Koyo-built stock replacement style radiator, plastic tanks (NC, MT and AT) fit a Mazda Miata NC (2006-2015 US model years)?
Added · Updated
Short answer: Yes, reportedly Reported
Verdict:Fits Reported confidence (2 of 3) · 1 source
Yes, reportedly: Stock-style replacement radiator with plastic tanks, sized for the automatic, fits both MT and AT cars.
| Part | Koyo-built stock replacement style radiator, plastic tanks (NC, MT and AT) |
|---|---|
| Vehicle | Mazda Miata NC (2006-2015 US model years) |
| Years | 2006-2015 |
| Trim / condition | manual and automatic |
| Verdict | Fits Reported to fit |
| Confidence | Reported 2 of 3 — Stated by one reasonably reputable source (retailer, shop, magazine). Not independently confirmed. |
| Last verified | 2026-10-26 (date the cited sources were last read) |
Details
Stock-style replacement radiator with plastic tanks, sized for the automatic, fits both MT and AT cars. The vendor expects about a decade of life and says to replace a radiator once the tanks discolour.
Specs
- core in: 5/8
Related build entries
Other cooling fitment for the NC
- Moroso aluminum coolant expansion tank (NC) — Reported to fit Fits
More for this car
- All Mazda Miata NC (2006-2015 US model years) fitment answers · NC common problems
- Newsletter archive: past issues with every new and corrected entry
Sources
- NC stock replacement style radiator — Flyin' Miata (parts vendor) (vendor article; read 2026-10-26; full page read)
Summaries are in our own words. Fitment is not guaranteed — disclaimer.
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