TOYOTA 436333406 Throttle Body 337-10145 12K

( Part Type: Throttle ), ( Oe/oem Part Number: 22030waa01 ), ( Ipn: 337-10145 ), ( Manufacturer Warranty: 6 Month ), ( Warranty Length: 6 Month Warranty ), ( Partout Id: A-122366730 )

Review TOYOTA Gr Throttle Body Assembly Oem 12k Miles fits SUPRA 2021

The **Toyota 337-10145 2021 GR Supra Throttle Body (Part Number: 436333406)** is a precision-engineered component designed exclusively for the high-performance 3.0L twin-turbocharged V6 powertrain found in the latest generation of the Toyota GR Supra. This throttle body serves as the critical interface between the driver s input and the engine s air intake system, playing a pivotal role in optimizing throttle response, fuel efficiency, and overall engine performance. Crafted from high-grade materials, including durable plastic and reinforced metal components, this throttle body is engineered to withstand the demanding conditions of aggressive driving, track use, and high-RPM operation. Its sleek, aerodynamic design ensures minimal air resistance while maintaining structural integrity, allowing for smooth and responsive throttle modulation even under heavy load. The unit features Toyota s proprietary **Variable Throttle Control (VTC)** system, which dynamically adjusts airflow based on engine demands, enhancing both drivability and power delivery. Whether you're pushing the limits on the track or enjoying spirited highway cruising, this throttle body is built to complement the GR Supra s legendary blend of precision and power. For enthusiasts seeking to maintain or upgrade their vehicle s performance, this genuine Toyota part ensures compatibility with the 2021 model year s advanced engine management system, delivering seamless integration with the vehicle s ECU for optimal tuning potential. Its robust construction and meticulous calibration make it an essential component for preserving the integrity of the GR Supra s legendary driving dynamics.

The **Toyota 337-10145 2021 GR Supra Throttle Body (Part #436333406)** is a critical component for maintaining optimal performance in the 2JZ-GTE engine, which powers the 2021 GR Supra. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying This Throttle Body**

1. **OEM Quality and Reliability**

The throttle body is a genuine Toyota part, meaning it meets the manufacturer s exact specifications for fit, function, and durability. OEM components are designed to integrate seamlessly with the engine and vehicle systems, reducing the risk of compatibility issues or premature failure.

2. **Performance and Efficiency**

A properly functioning throttle body ensures smooth throttle response, optimal airflow, and efficient fuel delivery. The 2021 GR Supra s throttle body is engineered to work with the engine s ECU (Engine Control Unit), providing precise control over air intake, which is crucial for both daily driving and performance applications. A faulty or worn throttle body can lead to hesitation, poor acceleration, or reduced fuel economy.

3. **Compatibility with Modifications**

If you plan to modify your GR Supra (e.g., forced induction, tuning, or exhaust upgrades), a high-quality throttle body is essential. The 436333406 part is designed to work with aftermarket tuning solutions, allowing the ECU to adjust fuel delivery and timing accordingly. This compatibility ensures that modifications do not cause drivability issues or engine damage.

4. **Longevity and Durability**

Toyota s throttle bodies are built to last the lifespan of the vehicle under normal conditions. The materials used in its construction such as the throttle blade, sensors, and housing are resistant to wear, corrosion, and environmental factors. This reduces the need for frequent replacements, saving time and money in the long run.

5. **Warranty Coverage**

Purchasing directly from Toyota or an authorized dealer often includes warranty coverage, typically ranging from 12 to 60 months, depending on the retailer. This provides peace of mind in case of defects or premature failure. Third-party sellers may offer warranties as well, but the duration and coverage can vary.

6. **Easy Installation**

The throttle body is a relatively straightforward component to replace, especially for those with basic mechanical experience. It is located between the air filter housing and the intake manifold, and the installation process typically involves disconnecting electrical connectors, removing bolts, and installing the new part. Toyota provides clear service manuals and diagrams to guide the process.

7. **Support for Vehicle Resale Value**

Maintaining the vehicle with OEM parts helps preserve its resale value. Potential buyers often prefer cars that have been serviced with genuine components, as it signals that the vehicle has been well cared for. This is particularly important for high-performance models like the GR Supra, where aftermarket parts can sometimes raise red flags for serious buyers.

8. **Sensor Accuracy**

The throttle body includes sensors that monitor throttle position and airflow, which are critical for the ECU s ability to optimize engine performance. A new throttle body ensures these sensors are calibrated and accurate, leading to better throttle response, smoother shifting (if equipped with a transmission), and reduced engine strain.

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### **Cons of Buying This Throttle Body**

1. **Higher Cost Compared to Aftermarket Alternatives**

The primary drawback of purchasing an OEM throttle body is the cost. Toyota parts are often more expensive than aftermarket equivalents, which may offer similar or even superior performance at a lower price. For example, aftermarket throttle bodies from brands like **AEM, Holley, or Walbro** may provide additional features such as adjustable blades, better sensor accuracy, or compatibility with advanced tuning software. The price difference can be significant, especially when factoring in installation labor.

2. **Limited Customization**

OEM throttle bodies are not designed for extensive customization. If you are looking for features like variable throttle response, custom sensor calibration, or integration with specific tuning software, aftermarket options may offer more flexibility. Some aftermarket throttle bodies also include features like digital throttle control (DTC) or compatibility with hybrid systems, which OEM parts may lack.

3. **Potential for Counterfeit Parts**

When purchasing from non-authorized sellers (e.g., online marketplaces like eBay, Amazon, or random e-commerce sites), there is a risk of receiving counterfeit or refurbished parts. Counterfeit throttle bodies may not meet Toyota s quality standards, leading to premature failure, poor performance, or even damage to the engine. Always verify the seller s reputation, certifications, and return policies to mitigate this risk.

4. **Longer Lead Times**

OEM parts, especially for high-demand models like the GR Supra, can sometimes have longer lead times due to supply chain constraints or high demand. This may require additional patience or alternative sourcing options, such as aftermarket parts or used OEM parts from salvage yards.

5. **Overkill for Minor Issues**

If the throttle body is only experiencing minor issues (e.g., slight hesitation or minor sensor drift), replacing it with an OEM part may be more than necessary. In such cases, cleaning the throttle body (using throttle body cleaner) or recalibrating the sensors might resolve the issue without the need for a full replacement. This can save money and reduce unnecessary wear on the engine.

6. **Potential for Over-Tuning**

While the OEM throttle body is designed to work with the GR Supra s ECU, some aftermarket tuners or modifications (e.g., aggressive fueling or forced induction) may require a throttle body that can handle higher airflow or more precise control. In such cases, an aftermarket throttle body might be a better long-term investment to avoid throttling issues or engine limitations.

7. **Environmental and Ethical Concerns**

Some consumers prefer to avoid purchasing OEM parts due to environmental or ethical concerns, such as the carbon footprint of manufacturing or labor practices in Toyota s supply chain. While these concerns are subjective, they may influence purchasing decisions for environmentally conscious buyers.

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### **Conclusion**

The **Toyota 337-10145 2021 GR Supra Throttle Body (Part #436333406)** is a high-quality, reliable component that ensures optimal performance, efficiency, and longevity for your vehicle. Its OEM status guarantees compatibility, durability, and support from Toyota s warranty, making it an excellent choice for those who prioritize authenticity and long-term reliability. The throttle body plays a critical role in the engine s operation, and replacing it with a genuine part is a sound investment for maintaining or restoring the GR Supra s performance.

However, the higher cost and limited customization options may deter buyers who are open to aftermarket alternatives. Aftermarket throttle bodies can offer additional features, cost savings, and better compatibility with modifications, making them a viable option for enthusiasts who are willing to research and invest in high-quality aftermarket parts. The decision ultimately depends on your budget, modification plans, and whether you prioritize OEM reliability over aftermarket flexibility.

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### **Recommendation**

- You prioritize genuine Toyota quality and warranty coverage.

- You are not planning extensive modifications that require aftermarket throttle body features.

- You want to maintain or restore the vehicle s resale value with factory-spec parts.

- You are replacing the throttle body due to a known failure or as part of a routine maintenance schedule.

**Where to Buy:** Purchase directly from **Toyota Dealers, Toyota Parts Online, or authorized Toyota parts distributors** to ensure authenticity and warranty coverage. Avoid third-party sellers unless they are reputable and offer return policies or warranties.

- You are on a budget and are willing to research high-quality aftermarket brands (e.g., **AEM, Holley, Walbro, or Spectre**).

- You plan to modify the vehicle with forced induction, aggressive tuning, or other performance upgrades that may benefit from aftermarket throttle body features.

- You are looking for additional customization options, such as adjustable throttle response or better sensor accuracy.

**Where to Buy:** Look for aftermarket throttle bodies from **specialized performance parts retailers (e.g., Borla, JE, Summit Racing, or local tuning shops)**. Ensure the part is compatible with your specific GR Supra model and ECU tuning requirements.

- **Cleaning and Recalibration:** If the throttle body is only experiencing minor issues (e.g., sensor drift or carbon buildup), cleaning it with throttle body cleaner and recalibrating the sensors may resolve the problem without a full replacement.

- **Used OEM Parts:** If budget is a concern, consider purchasing a **used OEM throttle body from a salvage yard or trusted seller**, but inspect it thoroughly for wear, damage, or proper functionality before installation.

Regardless of whether you choose OEM or aftermarket, **have the throttle body replaced by a professional mechanic or a Toyota-certified technician**, especially if you are unfamiliar with the process. Proper installation ensures that sensors are calibrated correctly and that the throttle body is securely mounted, preventing air leaks or drivability issues.

If you replace the throttle body as part of a performance upgrade, consider **updating your ECU map** to account for the new component. A professional tuner can optimize fuel delivery and throttle response for the throttle body s specifications, maximizing performance and preventing engine limitations.

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**Final Verdict:** For most GR Sup

Details:

ATTENTION: Stock photo shows multiple items. This is NOT a manufacturer part number, and can be disregarded. Will fit: TOYOTA GR SUPRA 2021 2024 2.0L. No photos of the actual Throttle Body are available.

part #: 436333406 prices

• $167.48-$200.00

specifications throobo:

• for models: Supra
• for makes: Toyota
• for years: 2021
• part type: Throttle
• oe/oem part number: 22030waa01
• ipn: 337-10145
• manufacturer warranty: 6 Month
• warranty length: 6 Month Warranty
• partout id: A-122366730

seller throobo:

• city: Caseyville, Illinois
• rating: 98.5%
• # reviews: 502727

payments throobo:

• wallet: Google-pay
• other
• credit card: Mastercard

offer throobo:

• sold: 0
• availability: In Stock
• quantity: 1
• started: April 11, 2026
• options: Ship-to-home

shipping throobo:

• transit: 4-9 Days
• service: UPS Ground
• type: Fixed
• cost: $0.00
• carrier: UPS
• class: Standard

general throobo:

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

returns throobo:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

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