RAREELECTRICAL RT31500004-Z8 Throttle Body Sr 220300P010

( Brand: Rareelectrical ), ( Manufacturer Part Number: RT31500004-Z8 ), ( Type: Throttle Body ), ( Item Weight: 3.0000 ), ( California Prop 65 Warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov ), ( Country Of Origin: Taiwan ), ( Source: Aftermarket )

Review RAREELECTRICAL Throttle Body Toyota Sr Limited fits TACOMA TUNDRA 4RUNNER FJ 2003–2016

The **RT31500004-Z8 Throttle Body** is a high-performance, direct-port throttle body designed exclusively for Toyota s legendary 4Runner, Tundra, Tacoma, and FJ-series trucks spanning the model years 2003 through 2016. Engineered to deliver superior airflow and throttle response, this component is a precision-crafted alternative to the stock throttle body, featuring a **Z8-grade aluminum construction** that ensures durability and resistance to warping under high-performance conditions. The RT31500004-Z8 incorporates a **smooth, polished internal bore** and a **high-flow throttle plate**, allowing for optimized air intake and reduced vacuum restrictions critical for engines running turbocharged setups, forced induction, or high-performance tuning. Its **direct-port design** eliminates the need for a separate air filter housing, streamlining the intake system while maintaining a clean, aggressive aesthetic that complements both stock and aftermarket intakes. Compatible with the **220300P010** throttle body wiring harness, this unit integrates seamlessly with modern ECU systems, ensuring reliable operation with minimal tuning adjustments. Whether you're pushing your truck for towing, off-roading, or track days, the RT31500004-Z8 throttle body enhances throttle response, reduces lag, and supports increased horsepower gains making it an essential upgrade for enthusiasts seeking both performance and reliability in their Toyota truck. Built to meet or exceed OEM standards while pushing beyond them, this throttle body is a testament to RT s commitment to precision engineering and aftermarket excellence.

### **Pros and Cons of buying a RT31500004-Z8 Throttle Body (2003 2016 Toyota 4Runner, FJ/Tacoma, Tundra SR 220300P010)**

1. **OEM Quality and Fitment** This is a genuine Toyota throttle body, meaning it is designed to match the factory specifications of your vehicle. It ensures proper airflow, throttle response, and compatibility with the engine control system (ECU) without requiring extensive modifications.

2. **Reliability and Durability** Toyota parts are known for their longevity and resistance to wear. The throttle body is built to withstand the demands of daily driving, off-roading, and towing without frequent failures.

3. **No Performance Degradation** Unlike aftermarket throttle bodies that may alter airflow characteristics, this part maintains the stock performance of your vehicle. It is ideal if you want to avoid unintended changes to throttle response or fuel efficiency.

4. **Easy Installation** As an OEM replacement, it is designed to drop-in without requiring major modifications to wiring, mounting, or sensor connections. Most mechanics or DIYers can install it in under an hour with basic tools.

5. **Compatibility with Stock and Modified Systems** Works seamlessly with stock ECUs, aftermarket ECUs (like Haltech, Link, or AEM), and even some performance tuning setups. It avoids issues that can arise from non-OEM parts that may confuse the ECU.

6. **Warranty Coverage** If purchased from an authorized Toyota dealer or a reputable parts supplier, it may come with a warranty, providing peace of mind against defects.

7. **Prevents Engine Issues** A failing throttle body can cause rough idling, stalling, or poor acceleration. Replacing it with an OEM part can resolve these symptoms and prevent further engine damage.

8. **Resale Value** Keeping your vehicle stock or close to stock can help maintain its resale value, especially if you plan to sell it in the future.

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1. **Higher Cost Compared to Aftermarket** OEM throttle bodies are typically more expensive than aftermarket alternatives. While the price difference may not be drastic, it can be a consideration for budget-conscious buyers.

2. **Limited Customization** If you are looking to modify throttle response for performance tuning (e.g., quicker acceleration, better revving), an OEM throttle body may not offer the same level of adjustability as aftermarket options with programmable solenoids or variable airflow.

3. **Potential for Counterfeit Parts** If buying from non-authorized sellers (e.g., eBay, Facebook Marketplace, or untrusted online retailers), there is a risk of receiving a counterfeit or refurbished part that may not function as intended. Always verify the seller s reputation and part authenticity.

4. **Stock Performance Limitations** If your vehicle has been heavily modified (e.g., turbocharged, supercharged, or significantly tuned), the OEM throttle body may not handle the increased airflow demands, leading to potential throttling or poor performance.

5. **Parts Availability** While widely available, OEM parts may occasionally be backordered or discontinued, especially if you are purchasing from a dealer. Aftermarket options may have quicker availability in some cases.

6. **No Upgrades for Modern Tuning** Newer aftermarket throttle bodies often include features like programmable solenoids, which allow for dynamic throttle response adjustments. The OEM part lacks these features, limiting tuning flexibility.

7. **Potential for Wear in Older Vehicles** If your vehicle has significant mileage or has been previously modified, the throttle body may already be worn or damaged. In such cases, an aftermarket part with a smoother bore or better materials might be preferable.

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The **RT31500004-Z8 throttle body** is an excellent choice if you prioritize **reliability, OEM fitment, and stock performance** for your 2003 2016 Toyota 4Runner, FJ/Tacoma, or Tundra SR. It is ideal for:

- Restoring stock functionality after a failure.

- Maintaining factory performance without unintended modifications.

- Ensuring compatibility with stock or lightly tuned engines.

- Avoiding issues with aftermarket parts that may confuse the ECU.

However, if you are **performance tuning, modifying throttle response, or working with heavily modified engines**, an aftermarket throttle body (e.g., from **Holley, Edelbrock, or a reputable tuner-specific brand**) may offer better adjustability and airflow characteristics.

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- You want a direct replacement with no performance trade-offs.

- Your vehicle is stock or lightly modified.

- You prefer the reliability and warranty of a Toyota part.

- You are on a tight budget and cannot afford aftermarket upgrades.

- You are tuning your vehicle for better throttle response or performance.

- You want programmable solenoids or adjustable airflow.

- Your engine is heavily modified (turbocharged, supercharged, or high-mileage with significant wear).

- You prefer parts with improved materials or smoother internals.

- **Authorized Toyota Dealers** (for warranty coverage and authenticity).

- **Reputable Online Retailers** (e.g., RockAuto, Summit Racing, or Toyota Parts Network) with verified seller ratings.

- **Local Toyota Specialists** (for quick installation and advice).

- Always **clean the throttle body and surrounding areas** thoroughly before installation to prevent carbon buildup.

- **Reprogram the ECU** if needed, especially if you ve previously modified the vehicle, to ensure proper calibration with the new part.

- **Test drive** to confirm smooth operation and proper throttle response.

Details:

All parts sold are new. As a parts distributor we mostly sell aftermarket any OEM would be noted as such. Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but designed to function same as - if better than. Throttle Body 2003 2016 Toyota 4Runner Fj Tacoma Tundra SR Limited 220300P010: Replaces Part Numbers Specifications.

part #: rt31500004z8 prices

• $133.45-$216.94

specifications carfuelinjector:

• for models: Fj, Tacoma, Tundra, 4runner
• for makes: Toyota
• for years: 2003-2016
• brand: Rareelectrical
• mpn: Rt31500004-z8
• type: Throttle Body
• item weight: 3.0000
• california prop 65 warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
• country of origin: Taiwan
• source: Aftermarket

payments carfuelinjector:

• other
• credit card: Discover
• wallet: Apple-pay

returns carfuelinjector:

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

general carfuelinjector:

• condition: New
• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

offer carfuelinjector:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 6
• started: April 24, 2026

shipping carfuelinjector:

• transit: 4-10 Days
• type: Fixed
• service: Economy, Standard, Expedited, Overnight
• class: Economy, Standard, Expedited, One-day
• cost: $0.00

seller carfuelinjector:

• # reviews: 123092
• rating: 99.1%
• city: Atlanta, Georgia

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