
645-11251-T5 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $18.99 | Condition is Used, Mazda RX-7 Turbo Relay FC 86-92 OEM 645-11251-T5, 2366D0, shipping cost = $5.00 | 99.2% |

The Mazda RX-7 is a legendary sports car known for its unique rotary engine and agile handling. If you're the proud owner of an FC (1986-1992) model with a turbocharged engine, you're likely no stranger to its intricate electrical systems. One such component is the turbo relay, which plays a crucial role in managing the electric current required to power the turbocharger.
Part number 2366D0, manufactured by Mazda, is the specific turbo relay designed for the Mazda RX-7 FC series (1986-1992). This essential relay ensures that the turbocharger receives the necessary power from the engine control unit (ECU) when needed. By properly controlling the electric current, it helps maintain optimal turbocharger performance, contributing to the engine's power and responsiveness.
The 645-11251-T5 designation refers to the Mazda part number for this relay. The "T5" signifies that it is a heavy-duty, automotive-grade component, capable of handling the high electrical loads associated with turbocharged applications. The dimensions for this relay are as follows: a height of approximately 25.4 millimeters (1.0 inches), a width of about 62.2 millimeters (2.4 inches), and a depth of around 31.8 millimeters (1.25 inches).
The Mazda 2366D0 turbo relay is a must-have for any Mazda RX-7 FC series owner looking to maintain their vehicle's performance and reliability. Whether you're preparing for a track day, a long road trip, or simply ensuring your daily driver is running at its best, this essential component is a worthwhile investment.
In summary, the Mazda 2366D0 turbo relay (part number 645-11251-T5) is a vital electronic component for the Mazda RX-7 FC series (1986-1992) with turbocharged engines. It ensures the turbocharger receives the necessary power from the engine control unit, contributing to optimal engine performance and responsiveness. This heavy-duty, automotive-grade component measures approximately 1.0 inches (height) x 2.4 inches (width) x 1.25 inches (depth).
The Mazda RX-7 (FC model, produced between 1986 and 1992) is a beloved sports car known for its unique rotary engine and agile handling. One of the electrical components that might need replacement in this vehicle is the turbo relay. Replacing a faulty turbo relay can help improve the performance of your RX-7 by ensuring a stable supply of electrical power to the turbocharger.
Here are some pros and cons of buying a Mazda 645-11251-T5 relay for your FC RX-7: Pros:1. OEM (Original Equipment Manufacturer) Part: This relay is a direct replacement manufactured by Mazda, ensuring a perfect fit and optimal function.
2. Improved Turbo Performance: By supplying a stable electrical power supply to the turbocharger, you can expect improved turbo response and overall performance.
3. Reliability: Mazda is a reputable automaker known for manufacturing high-quality parts. This relay should last longer than aftermarket alternatives.
Cons:1. Cost: OEM parts can be more expensive than aftermarket alternatives. This may be a concern for budget-conscious buyers.
2. Availability: Depending on your location and the availability of Mazda dealerships, you might have a harder time sourcing this part compared to aftermarket alternatives.
3. Limited Warranty: OEM parts typically come with a limited warranty, which may not be as extensive as aftermarket parts.
In conclusion, the Mazda 645-11251-T5 turbo relay is a reliable and effective solution for improving turbo performance in your FC RX-7. However, its higher cost compared to aftermarket alternatives and potential availability issues are worth considering. Ultimately, if you prioritize optimal performance, reliability, and a perfect fit, an OEM part like this turbo relay is a worthwhile investment.
Recommendation: If you have the budget and are looking for a reliable and effective solution for improving turbo performance in your FC RX-7, consider purchasing the Mazda 645-11251-T5 turbo relay. If cost is a concern, you may want to explore aftermarket alternatives, but keep in mind that they might not offer the same level of reliability or perfect fit as an OEM part.
Details:
Engines / transmissions differentials: engines, and differentials are drained of oil prior to shipping. Mazda rx-7 Turbo relay fc 86-92 oem 645-11251-T5, 2366D0 this is a used item with normal wear. Please refill the oil prior to starting up. Confirm fitment with your dealer or mechanic.
Like us on Facebook. Customer accepts all liabilities and risks by purchasing these items acknowledges that akin racing sport has stated said parts are used sold as is. Oem part#: 645-11251-T5, 2366D0. Donor car: 1987 Mazda rx-7 Turbo.
Our shipping price is for delivery to a commercial address with loading bay or forklift only.
specifications perfoelectric:
- for models: Turbo
- brand: Mazda
- mpn: 645-11251-t5
- country of manufacture: Jp
- manufacturer warranty: No Warranty
- brand type: Genuine Oem
- year range: 1986 1987 1988 1989 1990 1991 1992 86 87 88 89 90 91 92
payments perfoelectric:
- credit card: discover
- other
- wallet: apple-pay
shipping perfoelectric:
- service: standard
- type: fixed
- class: standard
- transit: 4-10 days
seller perfoelectric:
- # reviews: 2222
- city: blaine, washington
- rating: 97.4%
general perfoelectric:
- category: Auto Parts > Electrical Components
returns perfoelectric:
- paid by: buyer
- time: 30 days
- policy: returns accepted
offer perfoelectric:
- sold #: 16
- price: $18.99
- item condition: Used
- started: december 9, 2025
- in stock #: 1
- options: ship-to-home
- availability: in stock
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