Racing Head Service (RHS)

RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy

RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy
RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy
RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy
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RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block ChevyRHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block ChevyRHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy
Racing Head Service (RHS)

RHS BBC EFI Intake Manifold - 4500 Flange w/Fuel Rails — Fits Big Block Chevy

SKU: DXKK_11903-KIT
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches
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Product Details

Product Description
Part Numbers
Sizing & Fit

About Racing Head Service (RHS)

Racing Head Service (RHS) engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Racing Head Service (RHS) lineup with fast shipping and expert fitment support — order with confidence.

Racing Head Service (RHS) BBC EFI Intake Manifold (11903-KIT)

Maximize the performance of your Big Block Chevy engine with the RHS 11903-KIT EFI intake manifold. This high-performance, single-plane intake is designed for engines equipped with rectangle port cylinder heads and features a 4500 (Dominator) flange for compatibility with large throttle bodies. It includes pre-installed fuel rails for a complete EFI conversion solution.

Key Features:

  • EFI Ready: Comes complete with fuel rails, making it ideal for electronic fuel injection conversions.
  • Dominator Flange: Features a 4500 series flange, designed to accept large, high-flow throttle bodies.
  • Single Plane Design: Promotes efficient airflow and power delivery, particularly in the mid to upper RPM range.
  • Rectangle Port: Specifically designed to match rectangle port cylinder heads for optimal flow and performance.
  • Material: Constructed from high-quality aluminum for reduced weight and excellent thermal properties.
  • Finish: Natural aluminum finish provides a clean, race-ready look.

This intake manifold is engineered to deliver significant horsepower and torque gains, making it an excellent choice for drag racing, street performance, and high-performance street/strip applications. The kit includes everything needed to integrate your EFI system, simplifying the installation process.

Find top-tier engine components for your build at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Racing Head Service (RHS)

Racing Head Service (RHS) engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Racing Head Service (RHS) lineup with fast shipping and expert fitment support — order with confidence.

Racing Head Service (RHS) BBC EFI Intake Manifold (11903-KIT)

Maximize the performance of your Big Block Chevy engine with the RHS 11903-KIT EFI intake manifold. This high-performance, single-plane intake is designed for engines equipped with rectangle port cylinder heads and features a 4500 (Dominator) flange for compatibility with large throttle bodies. It includes pre-installed fuel rails for a complete EFI conversion solution.

Key Features:

  • EFI Ready: Comes complete with fuel rails, making it ideal for electronic fuel injection conversions.
  • Dominator Flange: Features a 4500 series flange, designed to accept large, high-flow throttle bodies.
  • Single Plane Design: Promotes efficient airflow and power delivery, particularly in the mid to upper RPM range.
  • Rectangle Port: Specifically designed to match rectangle port cylinder heads for optimal flow and performance.
  • Material: Constructed from high-quality aluminum for reduced weight and excellent thermal properties.
  • Finish: Natural aluminum finish provides a clean, race-ready look.

This intake manifold is engineered to deliver significant horsepower and torque gains, making it an excellent choice for drag racing, street performance, and high-performance street/strip applications. The kit includes everything needed to integrate your EFI system, simplifying the installation process.

Find top-tier engine components for your build at GGCRACING.

Product Details

Product Description

About Racing Head Service (RHS)

Racing Head Service (RHS) engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Racing Head Service (RHS) lineup with fast shipping and expert fitment support — order with confidence.

Racing Head Service (RHS) BBC EFI Intake Manifold (11903-KIT)

Maximize the performance of your Big Block Chevy engine with the RHS 11903-KIT EFI intake manifold. This high-performance, single-plane intake is designed for engines equipped with rectangle port cylinder heads and features a 4500 (Dominator) flange for compatibility with large throttle bodies. It includes pre-installed fuel rails for a complete EFI conversion solution.

Key Features:

  • EFI Ready: Comes complete with fuel rails, making it ideal for electronic fuel injection conversions.
  • Dominator Flange: Features a 4500 series flange, designed to accept large, high-flow throttle bodies.
  • Single Plane Design: Promotes efficient airflow and power delivery, particularly in the mid to upper RPM range.
  • Rectangle Port: Specifically designed to match rectangle port cylinder heads for optimal flow and performance.
  • Material: Constructed from high-quality aluminum for reduced weight and excellent thermal properties.
  • Finish: Natural aluminum finish provides a clean, race-ready look.

This intake manifold is engineered to deliver significant horsepower and torque gains, making it an excellent choice for drag racing, street performance, and high-performance street/strip applications. The kit includes everything needed to integrate your EFI system, simplifying the installation process.

Find top-tier engine components for your build at GGCRACING.

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