MAZDA 337-59388 Throttle Body Automatic 1.6L

( Model: MIATA ), ( Bore Diameter: 2.5 In ), ( Fuel Type: Gasoline ), ( Manufacturer Warranty: 90 Day ), ( Connector Type: Plug ), ( Descriptionpartcondition: 1990 1991 1992 1993 Mazda Miata Oem Throttle Body Rwd Automatic 1 ), ( Performance Part: No ), ( Conditions Options: 1.6, At, Rwd ), ( Color: Silver ), ( Genuine Oem: Yes ), ( Material: Aluminum ), ( Type: Throttle Body ), ( Ipn: 337-59388 )

Review MAZDA Oem Throttle Body Automatic 1.6l fits MIATA RWD 1990–1993

The **Mazda 337-59388 1.6L RWD Automatic Throttle Body (1990 1993 MX-2/Miata)** is a rare and highly sought-after component for the iconic first-generation Mazda MX-2, affectionately known as the Miata in North America. This throttle body, part of the vehicle s fuel-injected engine management system, is a critical element in the car s performance and drivability, ensuring smooth throttle response while maintaining optimal fuel delivery to the 1.6L inline-four engine. Originally designed for the **RWD (rear-wheel-drive) automatic transmission models** produced between 1990 and 1993, this throttle body is a key part of the **EFI (Electronic Fuel Injection) setup**, which replaced the earlier carbureted systems and marked a significant evolution in the Miata s engineering. Crafted with precision, it features a durable metal housing with a **plastic throttle plate** that modulates airflow into the engine, working in tandem with the **ECU (Engine Control Unit)** to adjust fuel delivery based on driving conditions. The **1990 1993 models** are particularly notable for their slightly refined design compared to the earlier 1989 models, with subtle improvements in build quality and compatibility with the automatic transmission s smoother power delivery. Whether restoring a classic Miata to its original glory or upgrading an existing fuel-injection system, this throttle body is an essential component that helps preserve the car s legendary balance of sportiness and practicality. Its inclusion in a well-maintained or restored vehicle ensures that the engine runs with the same responsive, engaging character that made the Miata a cult favorite among enthusiasts worldwide.

Buying a 1990 1993 Mazda MX-5 Miata (specifically the 1.6L RWD automatic model with the throttle body) has distinct advantages and drawbacks, depending on your priorities. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Classic Driving Experience**

The MX-5 Miata is widely regarded as one of the best-handling cars ever made, with precise steering, balanced weight distribution, and a rear-wheel-drive layout that rewards driver engagement. The 1.6L engine (in these early models) produces about 116 horsepower and 100 lb-ft of torque, which, while modest by modern standards, is sufficient for spirited driving on twisty roads.

2. **Simplicity and Reliability**

Early Miatas are mechanically straightforward, with a relatively simple automatic transmission (a 4-speed Aisin unit) and few electronic complexities compared to modern cars. The throttle body (rather than a throttle body with electronic controls) is easier to maintain than later fuel-injected models. Many owners report that these cars can last well over 200,000 miles with basic maintenance.

3. **Affordability**

Prices for these models are generally low, especially for the automatic version. You can often find one in the $3,000 $6,000 range, depending on condition. Parts are also inexpensive, and labor costs are minimal compared to newer vehicles.

4. **Community and Modding Culture**

The Miata has a passionate owner community, with abundant aftermarket support for upgrades (suspension, brakes, exhaust, engine tuning, etc.). The car s popularity ensures that parts, forums, and restoration resources are widely available.

5. **Low Operating Costs**

Fuel efficiency is decent for its class (around 22 25 MPG combined), and insurance is typically cheap. Routine maintenance (oil changes, brake pads, tires) is affordable.

6. **Timeless Design**

The Miata s retro styling is universally admired, and its compact size makes it easy to park and maneuver in urban areas.

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### **Cons**

1. **Automatic Transmission Limitations**

The 4-speed automatic in these early Miatas is known for being sluggish and less engaging than the manual transmission. It lacks modern shift quality and can feel slow off the line, especially in stop-and-go traffic. The throttle response is also less precise than in a manual-equipped car.

2. **Weak Engine for Modern Standards**

The 1.6L engine is underpowered by today s standards, particularly when compared to modern turbocharged or high-performance engines. It lacks the torque needed for towing, heavy loads, or aggressive driving without straining. The throttle body setup is also less efficient than later fuel-injected models, which may result in slightly poorer throttle response and fuel economy.

3. **Rust and Wear Issues**

Early Miatas (especially those from the early '90s) can suffer from rust in critical areas like the subframe, rear axle, and suspension components. The automatic transmission fluid may need frequent changes to prevent premature wear. Always inspect these areas thoroughly before purchasing.

4. **Limited Modern Safety Features**

These cars lack modern safety features like stability control, airbags (beyond basic side-impact protection), or advanced driver-assistance systems. They also have poor crash test ratings by today s standards.

5. **Maintenance Can Be Inconvenient**

While the car is simple, some maintenance tasks (e.g., transmission fluid changes, differential service) require specialized knowledge or tools. The lack of modern diagnostic tools can make troubleshooting issues more challenging.

6. **Depreciation and Resale Value**

While the Miata holds its value reasonably well among classic cars, it won t appreciate like a rare or high-performance model. If you plan to sell later, the resale value may not justify a high purchase price.

7. **Comfort and Practicality**

The Miata is a two-seater with minimal cargo space, making it impractical for daily use with passengers or large items. The ride can also be firm, which may not suit all drivers.

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### **Conclusion**

The 1990 1993 Mazda MX-5 Miata (1.6L RWD automatic) is an excellent choice if you prioritize **driving enjoyment, simplicity, and affordability** over modern convenience or power. It s ideal for enthusiasts who appreciate classic handling, a strong owner community, and the joy of driving a lightweight, rear-wheel-drive roadster. However, if you need **better fuel economy, smoother automatic transmission performance, or modern safety features**, you might consider a later model (e.g., 1994 with fuel injection) or a different car entirely.

The automatic transmission is the biggest drawback for many potential buyers, as it detracts from the Miata s signature driving experience. If you re willing to compromise on power and shift quality, this car can be a fantastic project or a fun weekend driver.

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### **Recommendation**

- You re primarily interested in driving dynamics and the Miata experience.

- You re okay with an older automatic transmission and modest power.

- You re prepared to maintain it properly (oil changes, rust checks, transmission fluid).

- You enjoy the classic car community and potential for modifications.

- You re on a tight budget and want a reliable, low-cost car for occasional use.

- You rely on the car for daily commuting or need practicality (space, comfort, modern safety).

- You prefer a smoother, more powerful automatic transmission (consider a later Miata or a different car).

- You re not comfortable with basic mechanical maintenance or rust inspection.

- You want a car that will appreciate in value or suit modern driving habits.

- If you love the Miata but want a better automatic, look for a **1994 model** (which uses fuel injection and a more refined transmission).

- If you prefer manual transmission, a **1990 1993 manual Miata** is the purest driving experience.

- If you want a more practical classic roadster, consider a **Toyota MR2 (1990 1999)** or **Nissan 240SX (1989 1999)**, both of which have stronger engines and better automatic transmissions.

Details:

Works perfectly fine was pulled from a running 90 after cracked block.

specifications throobo:

• for models: Rwd, Miata
• for makes: Mazda
• for years: 1990-1993
• model: Miata
• bore diameter: 2.5 In
• fuel type: Gasoline
• manufacturer warranty: 90 Day
• connector type: Plug
• descriptionpartcondition: 1990 1991 1992 1993 Mazda Miata Oem Throttle Body Rwd Automatic 1
• performance part: No
• conditions options: 1.6, At, Rwd
• color: Silver
• genuine oem: Yes
• material: Aluminum
• type: Throttle Body
• ipn: 337-59388

seller throobo:

• # reviews: 13
• rating: 100.0%
• city: Orange, Texas

offer throobo:

• started: March 20, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1

returns throobo:

• policy: No Returns

payments throobo:

• wallet: Google-pay
• credit card: Diners-club
• other

shipping throobo:

• type: Calculated
• transit: 5-11 Days
• class: Standard
• service: USPS Ground Advantage
• cost: $8.65
• carrier: USPS

general throobo:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies

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