Honda H-Series Billet Intake Manifold Spacer – Best Performance Upgrade

Honda H-Series Billet Intake Manifold Spacer

 

Honda H-Series Billet Intake Manifold Spacer is a precision CNC-machined performance upgrade designed to increase intake plenum volume, improve airflow characteristics, and enhance throttle response for Honda H-Series DOHC VTEC engines. Manufactured from premium T6061 billet aluminium, this spacer creates additional plenum capacity between the intake manifold and cylinder head while maintaining excellent strength, durability, and precise fitment.

 

Designed for enthusiasts building naturally aspirated, turbocharged, or track-focused H-Series engines, the Honda H-Series Billet Intake Manifold Spacer helps optimise airflow distribution throughout the intake system. The increased plenum volume promotes smoother airflow into each cylinder, supporting improved engine breathing across the RPM range.

 

Manufactured using high-quality CNC machining processes, the spacer provides accurate port alignment and reliable sealing while remaining lightweight and corrosion resistant. Whether you’re refreshing your intake system or building a complete performance engine, this billet spacer offers a simple bolt-on upgrade that complements both factory and aftermarket intake manifolds.

 

Ideal for Honda Prelude, Accord Euro-R, and H-Series engine swap applications, the Honda H-Series Billet Intake Manifold Spacer is an excellent addition for enthusiasts seeking improved intake efficiency without replacing the entire intake manifold.

 

 

COMPATIBILITY

 

Compatible Engines

• Honda H22A DOHC VTEC

• Honda H22A4

• Honda H22A Euro-R

• Honda H23A VTEC

 

Suitable Applications

• Honda Prelude BB Series

• Honda Accord Euro-R CL1

• Honda H-Series Engine Swaps

• Performance & Motorsport Builds

Please verify intake manifold design and bolt pattern before purchasing.

 

 

FEATURES & BENEFITS

• Precision CNC-machined T6061 billet aluminium

• Increases intake plenum volume

• Improves airflow distribution

• Enhances throttle response

• Optimises intake runner efficiency

• Precision CNC port-matched openings

• Lightweight billet construction

• High-strength and corrosion-resistant material

• Direct bolt-on installation

• Compatible with OEM and aftermarket intake manifolds

 

 

MATERIAL & FINISH

Manufactured from premium T6061 billet aluminium using precision CNC machining for excellent strength, durability, and accurate fitment.

 

• CNC-machined T6061 billet aluminium

• Precision port-matched openings

• Corrosion-resistant finish

• High-strength motorsport-grade construction

• Precision-machined sealing surfaces

 

 

OPTIONS AVAILABLE

 

Available spacer thicknesses include:

• 10mm

• 20mm

• 25mm

 

Custom options available:

• Custom thickness

• Port matching

• Additional vacuum ports

• Custom engraving

 

 

PACKAGE INCLUDES

• 1 × Honda H-Series Billet Intake Manifold Spacer

• High-quality gasket

• Extended mounting hardware

 

 

IMPORTANT NOTE

• Aftermarket performance component by Velocity Race.

• Not an OEM product.

• Professional installation is recommended.

• Spacer thickness may affect throttle body and vacuum hose clearance.

• Verify intake manifold compatibility before installation.

 

 

INSTALLATION

The Honda H-Series Billet Intake Manifold Spacer installs between the cylinder head and intake manifold using the supplied hardware. Proper gasket placement and torque specifications should always be followed during installation to ensure reliable sealing.

 

Depending on your engine setup, throttle body clearance, vacuum hose routing, and fuel rail fitment should be checked before final assembly. ECU tuning may be beneficial on modified engines to maximise performance after installation.

 

 

WHY UPGRADE?

Adding a billet intake manifold spacer is a simple and effective method of increasing intake plenum volume without replacing the complete intake manifold. The increased plenum capacity helps smooth airflow into the intake runners while improving engine breathing characteristics across the RPM range.

 

For enthusiasts running naturally aspirated or forced induction H-Series engines, this upgrade complements existing intake modifications while maintaining OEM-style installation.

 

 

PERFORMANCE NOTES

The Honda H-Series Billet Intake Manifold Spacer is designed to optimise airflow rather than create dramatic horsepower gains on its own. Performance improvements depend on the overall engine combination, including intake manifold design, throttle body size, camshaft profile, cylinder head modifications, exhaust system, and ECU calibration.

 

For best results, pair this spacer with other supporting performance upgrades and professional engine tuning.

 

 

VELOCITY RACE QUALITY

Every Velocity Race billet intake manifold spacer is manufactured using premium T6061 aluminium and precision CNC machining to ensure excellent fitment, durability, and consistent quality. Designed for both street and motorsport use, each component undergoes careful machining and inspection before leaving our facility.

 

Manufactured in Malaysia, Velocity Race products are trusted by enthusiasts and professional workshops seeking reliable performance components built to high engineering standards.

 

 

APPLICATION AND UPGRADE POTENTIAL

The Honda H-Series Billet Intake Manifold Spacer is suitable for:

• Naturally aspirated builds

• Turbocharged H-Series projects

• Track day vehicles

• Circuit racing

• Time attack

• Street performance builds

• Engine swap projects

 

 

Complete your Honda H-Series setup with Velocity Race billet intake manifolds, fuel rails, throttle body adapters, and other CNC-machined performance components.

 

For more information on intake manifold airflow and engine tuning principles, HP Academy provides valuable technical resources for performance enthusiasts.