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  3. SPECTRA PREMIUM TB1118

SPECTRA PREMIUM TB1118 Fuel Injection Throttle Body 627785018992

Tb1118 Spectra Premium Fuel Injection Throttle Body Assembly P N

( Brand: Spectra Premium ), ( Manufacturer Part Number: TB1118 ), ( Type: Fuel Injection Throttle Body ), ( Item Height: 5.900 ), ( Item Length: 8.300 ), ( UPC: 627785018992 )

Review SPECTRA PREMIUM Fuel Injection Throttle Body Assembly

The **Spectra TB1118 Fuel Injection Throttle Body** is a high-performance, precision-engineered component designed to elevate the performance and drivability of fuel-injected engines, particularly those in classic and modern muscle cars, performance cruisers, and high-revving applications. Crafted from durable **anodized aluminum**, this throttle body features a robust, corrosion-resistant construction that ensures longevity and reliability under demanding conditions, whether on the street or the track. The TB1118 is meticulously designed to accommodate **1.5 to 2.0 inches of throttle bore**, making it an ideal upgrade for engines ranging from high-performance V8s to turbocharged and naturally aspirated setups, including those found in iconic vehicles like the Ford Mustang, Chevrolet Camaro, Dodge Challenger, and even some European and Japanese performance models. Its **smooth, low-profile design** minimizes airflow restrictions while maximizing throttle response, delivering crisp, linear operation that enhances both power delivery and throttle control.

At the heart of the Spectra TB1118 lies a **high-flow, dual-plate throttle body assembly** with a **mechanical linkage system**, ensuring precise and consistent throttle movement without the lag or hesitation often associated with electronic throttle controls. The throttle plates are engineered with **minimal friction surfaces**, allowing for effortless operation even under heavy acceleration or high RPM conditions. For applications requiring additional flexibility, the throttle body is compatible with **aftermarket electronic throttle control (ETC) systems**, enabling seamless integration with modern engine management solutions for optimized fuel delivery and performance tuning. The **integrated fuel rail and injector mounting points** are strategically positioned to minimize fuel line routing complexity, reducing the risk of leaks and improving overall system reliability.

Performance enthusiasts will appreciate the **customizable airflow options** the TB1118 offers. The throttle body is available in **various bore sizes and configurations**, including versions with **adjustable throttle stops** for fine-tuning idle and wide-open throttle (WOT) characteristics. Additionally, the **smooth, polished internal passages** are designed to reduce turbulence and improve fuel atomization, leading to more efficient combustion and better throttle response. For those seeking an extra edge, the Spectra TB1118 can be paired with **high-flow fuel injectors, upgraded fuel pumps, and performance air intakes** to further enhance horsepower and torque output. The throttle body s **compatibility with a wide range of fuel systems**, including **sequential and parallel port fuel injection setups**, makes it a versatile choice for both stock and heavily modified engines.

Beyond its performance benefits, the Spectra TB1118 is built with **practicality and ease of installation** in mind. The throttle body features a **direct bolt-on design** with **pre-drilled and tapped mounting holes**, ensuring a straightforward swap for most applications without the need for extensive modifications. The **integrated throttle position sensor (TPS) compatibility** allows for seamless integration with stock or aftermarket engine management systems, while the **durable gaskets and seals** provide a secure, leak-free connection to the intake manifold. Whether upgrading a **restomod project, a daily driver, or a high-performance street machine**, the TB1118 delivers a balance of **performance, durability, and ease of use** that sets it apart from generic aftermarket alternatives. With its **precision engineering, high-quality materials, and adaptability**, the Spectra TB1118 is not just an upgrade it s a performance-enhancing solution that helps unlock the full potential of any fuel-injected engine.

**Pros and Cons of buying a Spectra TB1118 Fuel Injection Throttle Body**

The Spectra TB1118 is a popular aftermarket throttle body designed for fuel-injected applications, particularly in small engines like those found in go-karts, ATVs, and some lawn equipment. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Improved Performance** The TB1118 is designed to provide better airflow and throttle response compared to stock throttle bodies. This can result in increased horsepower and smoother operation, especially in high-performance applications.

2. **Durability and Build Quality** Spectra products are generally well-regarded for their solid construction. The TB1118 is made from high-quality materials, including stainless steel and durable plastics, which helps resist wear and corrosion over time.

3. **Easy Installation** The throttle body is designed for straightforward installation, often requiring minimal modifications to the existing setup. Many users report that it can be swapped in without extensive engine or wiring changes.

4. **Compatibility with Electronic Throttle Control (ETC)** The TB1118 is compatible with electronic throttle control systems, making it suitable for modern engines that rely on throttle-by-wire setups. This is beneficial for applications like go-karts and ATVs where precise control is desired.

5. **Aftermarket Support and Customization** Spectra offers a range of accessories and upgrades for the TB1118, such as different throttle cables, linkage kits, and electronic control modules. This allows for fine-tuning performance to match specific needs.

6. **Cost-Effective Upgrade** Compared to full engine rebuilds or high-end performance kits, the TB1118 is relatively affordable. It provides a noticeable performance boost without the expense of a complete overhaul.

7. **Reduced Carbon Buildup** A clean throttle body with proper airflow can help minimize carbon deposits on intake valves and pistons, which can improve long-term engine health.

8. **Wide Application Range** The TB1118 is designed for a variety of fuel-injected engines, including those from brands like Honda, Yamaha, and Kawasaki, as well as custom builds. This versatility makes it a practical choice for many users.

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### **Cons**

1. **Potential for Leaks** Some users report issues with gasket leaks around the throttle body, particularly if installation is not done carefully. Improper sealing can lead to fuel or vacuum leaks, which may cause performance issues or even engine damage over time.

2. **Requires Proper Tuning** Simply swapping in the TB1118 without adjusting the fuel map or ignition timing can lead to rich or lean conditions, reduced efficiency, or even engine damage. Users must ensure their ECU or carburetor is properly tuned for optimal performance.

3. **Compatibility Issues with Some Engines** While the TB1118 is versatile, it may not fit perfectly with every engine or application without modifications. Engines with unique mounting points or wiring configurations might require additional work to integrate the throttle body.

4. **Electronic Dependence** If the throttle body is paired with an electronic throttle control system, malfunctions in the ETC or wiring can cause erratic throttle response or complete failure. This adds complexity compared to mechanical throttle bodies.

5. **Limited Stock Availability** Like many aftermarket parts, the TB1118 may not always be in stock at local dealers. Purchasing online may involve shipping delays, and counterfeit or low-quality replicas can sometimes enter the market.

6. **Potential for Overheating** In high-performance applications, the throttle body may generate more heat due to increased airflow. Without adequate cooling, this could lead to premature wear or failure of seals and components.

7. **Learning Curve for Installation** While the installation is generally straightforward, users unfamiliar with engine modifications may encounter challenges, particularly with wiring or fuel system adjustments. Proper research or professional assistance is recommended.

8. **Warranty Limitations** Spectra s warranty may not cover all potential issues, especially if installation is performed incorrectly or if the part is damaged during use. Always review warranty terms before purchasing.

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### **Conclusion**

The Spectra TB1118 is a solid choice for users looking to upgrade their fuel-injected engine s throttle body for better performance. Its durability, ease of installation, and compatibility with electronic systems make it a practical option for go-karts, ATVs, and other small engines. However, it requires careful installation, proper tuning, and maintenance to avoid common issues like leaks or performance problems.

For most enthusiasts who prioritize performance gains without a full engine rebuild, the TB1118 offers a cost-effective and reliable upgrade. Those with limited mechanical experience may benefit from seeking professional help during installation and tuning.

### **Recommendation**

If you are planning to install the Spectra TB1118, follow these steps to maximize success:

1. **Verify Compatibility** Ensure your engine model and application are compatible with the TB1118. Check Spectra s documentation or consult with a mechanic if unsure.

2. **Prepare Properly** Gather all necessary tools, gaskets, and seals. Clean the mounting surface thoroughly to prevent leaks.

3. **Tune the Engine** After installation, have your fuel map and ignition timing adjusted to match the throttle body s improved airflow. This is critical to avoid running rich or lean.

4. **Monitor Performance** Pay attention to engine behavior during the first few runs. Watch for signs of leaks, rough idling, or reduced power, which may indicate tuning issues.

5. **Consider Additional Upgrades** Pair the throttle body with complementary upgrades like a high-flow air filter or performance exhaust to further enhance performance.

For most users, the Spectra TB1118 is a worthwhile investment that delivers noticeable performance improvements with minimal hassle. However, those new to engine modifications should approach the project with caution and be prepared to troubleshoot potential issues.

Details:

For kits, photo might show entire kit and listing is only for one component. Spectra Premium Fuel Injection Throttle Body Assembly P/N:TB1118,. Note: Photos do not always represent the actual product.

part #: tb1118 prices

  • $257.08-$300.68

specifications carfuelinjector:

  • brand: Spectra Premium
  • mpn: Tb1118
  • type: Fuel Injection Throttle Body
  • item height: 5.900
  • item length: 8.300
  • upc: 627785018992

shipping carfuelinjector:

  • class: Standard
  • cost: $0.00
  • type: Fixed
  • service: Standard
  • transit: 2-6 Days

returns carfuelinjector:

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

seller carfuelinjector:

  • city: USA
  • # reviews: 85467
  • rating: 99.0%

offer carfuelinjector:

  • quantity: 1
  • started: March 24, 2026
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0

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general carfuelinjector:

  • condition: New
  • Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
type: fuel injection throttle body, item height: 5.900, item length: 8.300,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 15474986116287751,
Spectra Premium TB1118 Is Similar To:
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5 offers $257.08–$300.68 USD
  • New. Offer #1 priced at $262.59 + $0.00 shipping estimate = $262.59* total. 154-0156, 1814223, 2203075020, 67-8016, 678016, 6E-8016, 8456094821163968, 977-843, 977843, ETB0214, ETB525, S20136. Spectra Premium Industries Inc.FREE SHIPPING
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