BPE815170A Mazda COVER,THERMO, Price: 35.57$, Weight: 0.225kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Mazda |
BPE815170A |
COVER,THERMO |
1 |
0.225 |
2-3 |
35.57$ |
Compatibility
| Carline | Catalog No | Produced From | Destination Region | Drive | Model Year | Diagram |
|---|---|---|---|---|---|---|
| NB | AUNA07 | 11.1997 | General/China | L | 1998 | View |
| Carline | Catalog No | Produced From | Destination Region | Drive | Model Year | Diagram |
|---|---|---|---|---|---|---|
| NA | ALNAB2 | 08.1993 | General/China | L | 1993 | View |
| Carline | Catalog No | Produced From | Destination Region | Drive | Model Year | Diagram |
|---|---|---|---|---|---|---|
| NB | AUNA07 | 11.1997 | General/China | L | 1998 | View |
| Carline | Catalog No | Produced From | Destination Region | Drive | Model Year | Diagram |
|---|---|---|---|---|---|---|
| NB6C 200001 | ANNA07 | 06.2000 | Japan | R | H.12 | View |
Thermostat Housing Cover for Mazda Roadster/Miata/MX-5
This precision cover seals the engine thermostat to the cylinder head and anchors the upper radiator hose. It keeps coolant pressure stable, directs flow, and prevents leaks—vital for steady temps, long gasket life, and reliable track or daily driving.
Why this part is needed
The cover forms a rigid seat for the thermostat and O‑ring, holds the outlet spigot in line, and resists heat cycling. A correct, tight cover stops seepage, keeps air out of the system, and helps the thermostat read true coolant temperature.
How it works ⚙️
When the thermostat opens, coolant leaves the head through this housing and into the upper hose. The machined flange and groove compress the gasket evenly; the casting manages flow and supports the sensor boss or bleed as designed by Mazda.
What happens if it’s damaged ⚠️
Cracks or warping cause leaks, soft hoses, sweet odor, and overheating in traffic. Air pockets can trigger erratic temps, weak cabin heat, or a check engine light. Ignored, you risk blown gaskets or even head distortion—costly repairs.
Tech notes
Use a new gasket/O‑ring, clean mating surfaces, and torque bolts in stages. Refill with the correct coolant and bleed thoroughly. Replace any chalky or pitted hose necks; corrosion means the alloy is near failure.
Compatibility
- Roadster
- Miata
- Mx-5 Miata
- Mx-5