Coolant Expansion Tank / Sub‑Radiator Tank – LH/RH (Mazda Genuine Part No. LFG1-15-350C).
Maintains correct coolant volume and pressure by providing an overflow/return reservoir for the cooling system. Helps prevent aeration and overheating, and allows visual level checks.
Typically fitted to the Mazda MX‑5 (NC); see our compatibility table or verify fitment using VIN/chassis.
Common replacement when the original tank is cracked, discoloured/brittle, leaking at the cap or hose necks, or after cooling‑system service.
What’s Included
1 × Coolant Expansion / Sub‑Radiator Tank (LFG1-15-350C).
Genuine Mazda Component
This is an authentic Mazda OE part supplied through official channels. Choosing Genuine Mazda ensures:
- Exact fit & finish to factory tolerances for quick, trouble‑free installation.
- Correct materials for heat and chemical resistance as Mazda intended.
- Tested reliability under Mazda validation (pressure, thermal cycling, vibration).
- System compatibility with the MX‑5 NC cooling system for stable temperatures.
Mazspec sources directly from trusted OE channels. If you’re unsure about fitment, match by VIN/chassis.
Hardware and torque specifications are not included—refer to the Mazda workshop manual or contact our technical team for guidance.
| Model | Years | Engine | Engine Code | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|
| Mazda MX‑5 (NC) | 2006–2015 | 1.8L / 2.0L | L8‑DE, LF‑VE | Petrol | 5MT / 6MT / 6AT | Coolant expansion / sub‑radiator tank position; Soft‑Top & PRHT. |