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Skunk2 Ultra Street Intake & Alpha 70mm Throttle Body for Honda Acura B16 B18 B20

Skunk2 Ultra Street Intake & Alpha 70mm Throttle Body for Honda Acura B16 B18 B20


  • $534.98

Skunk2 Ultra Street Intake Manifold & Alpha 70mm Throttle Body for Honda Acura B16 B18 B20

Part #:
- Intake Manifold: 307-05-0500
- Throttle Body: 309-05-1050
- 70mm Thermal Throttle Body Gasket

All Honda B Series engines


This combo includes a Skunk2 Pro Intake manifold, Skunk2 Alpha Series 70mm throttle Body, and a Valex Racing thermal throttle body and intake manifold gasket

Intake Manifold:

The much anticipated Ultra "Street" intake manifolds for the Honda B16A/ B17A and B18C engine or VTEC cylinder heads!

The Ultra Series is years of research and development, culminated in a multi-piece cast aluminum intake manifold that offers advantages that only a modular design could allow. Using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a two-piece modular design that allows for easy disassembly, porting, and plenum volume changes through the use of a removable plenum lid and optional plenum spacers. In addition to CFD testing, the Ultra Series Intake Manifold has undergone extensive in-house dyno testing which has led to a design that is less restrictive, yielding both torque and power gains well over many of the competitors.  

Skunk2 Racing Ultra Street Intake Manifolds are cast-aluminum, manufactured from high-grade 356 aluminum alloy for strength and lightweight. Each manifold is CNC-machined for a precise fit, and individually inspected for quality assurance. The Ultra Series Street manifold features a generous 74mm throttle body opening and is constructed with thick walls at entry, minimizing concerns of breakthrough when port matching. Intense planning and design went into the plenum to distribute even airflow to all four cylinders under dynamic load conditions. Placement and design of the velocity stacks were rigorously flow tested to ensure maximum delivery of air to the cylinder. Large velocity stack raised bell mouth entries lead to 8.72” long intake runners with smooth transitions allowing the Ultra Street Intake Manifold to really move some air!


Skunk2 Racing Ultra Street Intake Manifolds are designed to be used in modified naturally aspirated applications as well as mild turbo/supercharged setups.

Modular 2pc. Design w/ Removable Plenum

Rotatable Plenum Allows Driver-side or Passenger-Side Throttle Body Mounting

1.8L Plenum Volume**

Tapered 8.72" Long High-Velocity Runners w/ Raised Velocity Stack Entries

Generously Cast Runner Walls for

Porting 74mm Throttle Body Opening

Lightweight 356 Aluminum Alloy Construction

2 x 1/8" NPT and 2 x 1/4" NPT Accessory Ports

Hi-Grade Mounting Hardware


Thermal Gasket Included


Throttle Body:

Skunk2 is proud to introduce the 70mm Alpha Series Throttle Body for Honda B16/ B17/ B18/ B20/ D15/ D16/ F20/ F22/ F23/ H22 and H23 engines in its exclusive, fine shot-blasted surface finish. Skunk2’s Alpha Series Throttle Body is designed to be used with Skunk2’s Pro Series Intake Manifolds as well as OEM and other aftermarket intake manifolds for bolt-on horsepower and torque gains by maximizing engine airflow, all at a competitive price.

A larger throttle body is key to producing additional power throughout the powerband on modified engines with increased airflow demands and the Skunk2’s 70mm Alpha Series Throttle Body delivers! Sealed ball bearings, a precision machined throttle plate and a honed oversized bore insures smooth operation on the most aggressive naturally aspirated and forced induction applications.


Precision Die-Cast Aluminum

Fine Shot-Blasted Surface Finish

Precision Machined Brass Throttle Plate

Compatible w/ OEM Throttle Cable

Sealed Ball Bearings for Smooth Operation

New Throttle Body Gasket and Hardware

Idle Adjustment Screws for Fine Tuning

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