Holley EFI Hi-Ram Plenum Top 105mm — Fits GM LS-Series Intake Manifold

SKU: GVMR_300-246
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About Holley EFI Holley EFI engineers high-quality automotive parts and ...Read More

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Sale price$413.95
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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

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

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

Watch in action

Precision Airflow for GM LS Engines

Unlock the full potential of your GM LS-Series engine with the Holley EFI Hi-Ram Plenum Top. Designed for enthusiasts who demand maximum airflow, this 105mm throttle body flange plenum top is the perfect upgrade for your Hi-Ram intake manifold setup. Whether you are building for the track or the street, this component delivers the consistent, high-volume air delivery required for high-horsepower naturally aspirated or boosted builds.

Technical Specifications

  • Application: GM LS-Series Hi-Ram Intake Manifolds
  • Throttle Body Flange: 105mm
  • Material: Cast Aluminum
  • Finish: Natural
  • Type: Tunnel Ram Plenum Top

Constructed from high-quality aluminum, this plenum top is built to handle high boost pressures without distortion. The 105mm opening ensures that your throttle body can feed the engine without restriction, providing the crisp throttle response and power gains you expect from Holley EFI products. The natural finish provides a classic racing aesthetic that complements any engine bay. Enhance your intake efficiency today with this premium manifold component from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

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

Watch in action

Precision Airflow for GM LS Engines

Unlock the full potential of your GM LS-Series engine with the Holley EFI Hi-Ram Plenum Top. Designed for enthusiasts who demand maximum airflow, this 105mm throttle body flange plenum top is the perfect upgrade for your Hi-Ram intake manifold setup. Whether you are building for the track or the street, this component delivers the consistent, high-volume air delivery required for high-horsepower naturally aspirated or boosted builds.

Technical Specifications

  • Application: GM LS-Series Hi-Ram Intake Manifolds
  • Throttle Body Flange: 105mm
  • Material: Cast Aluminum
  • Finish: Natural
  • Type: Tunnel Ram Plenum Top

Constructed from high-quality aluminum, this plenum top is built to handle high boost pressures without distortion. The 105mm opening ensures that your throttle body can feed the engine without restriction, providing the crisp throttle response and power gains you expect from Holley EFI products. The natural finish provides a classic racing aesthetic that complements any engine bay. Enhance your intake efficiency today with this premium manifold component from GGCRACING.

Product Details

Product Description

About Holley EFI

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

Watch in action

Precision Airflow for GM LS Engines

Unlock the full potential of your GM LS-Series engine with the Holley EFI Hi-Ram Plenum Top. Designed for enthusiasts who demand maximum airflow, this 105mm throttle body flange plenum top is the perfect upgrade for your Hi-Ram intake manifold setup. Whether you are building for the track or the street, this component delivers the consistent, high-volume air delivery required for high-horsepower naturally aspirated or boosted builds.

Technical Specifications

  • Application: GM LS-Series Hi-Ram Intake Manifolds
  • Throttle Body Flange: 105mm
  • Material: Cast Aluminum
  • Finish: Natural
  • Type: Tunnel Ram Plenum Top

Constructed from high-quality aluminum, this plenum top is built to handle high boost pressures without distortion. The 105mm opening ensures that your throttle body can feed the engine without restriction, providing the crisp throttle response and power gains you expect from Holley EFI products. The natural finish provides a classic racing aesthetic that complements any engine bay. Enhance your intake efficiency today with this premium manifold component from GGCRACING.

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