The Skunk2 Ultra Street Intake Manifold is designed for serious street and track enthusiasts building high-performance Honda B-Series engines. Compatible with all B16A, B17A, B18A/B/C, and B20B/Z applications, this manifold is engineered to balance peak performance with driveability. With its modular two-piece design, cast from aircraft-grade A356 aluminum, the Ultra Street bridges the gap between the Pro Series and Ultra Race manifolds by delivering strong mid-to-top-end power and responsiveness.

The manifold features a rotatable plenum, generous runner wall thickness for porting, and high-velocity trumpet-profiled runners. Ideal for naturally aspirated builds up to 275hp and boosted setups up to 750hp, the Ultra Street manifold is vacuum tested and finished in a durable black wrinkle powder coat with the signature Skunk2 nameplate.

Key Features:

• Cast from lightweight A356 aluminum alloy

• Modular two-piece design with removable plenum

• 1.8L plenum volume with 74mm throttle body opening

• 8.72" long tapered runners with raised velocity stack entries

• Rotatable plenum supports both driver and passenger side throttle setups

• Thick runner walls allow custom porting

• Two 1/8" NPT and two 1/4" NPT accessory ports

• Hi-grade mounting hardware and gasket included

• Vacuum tested and black wrinkle-coated finish

Performance Specs:

• NA builds: Up to 275hp

• Boosted builds: Up to 750hp

Recommended Add-ons:

Fuel Rails:

• Composite Fuel Rail (P/N 350-05-5000)

• Ultra Race Primary Fuel Rail (P/N 350-05-6000)

• Ultra Race Secondary Fuel Rail (P/N 350-05-6010)

Throttle Bodies:

• Alpha 70mm (P/N 309-05-1050)

• Pro 68mm Silver (P/N 309-05-0040) / Black (P/N 309-05-0045)

• Pro 70mm Silver (P/N 309-05-0050) / Black (P/N 309-05-0055)

• Pro 74mm Silver (P/N 309-05-0060) / Black (P/N 309-05-0065)

Sensors:

• TPS Sensor (P/N 352-05-1400)

• MAP Sensor 2.5 Bar (P/N 352-05-1525)

• MAP Sensor 4 Bar (P/N 352-05-1510)

Thermal Gaskets:

• Ultra Intake Manifold Gasket (P/N 372-05-0265)

• Throttle Body Gaskets:

  • Alpha 68mm (P/N 372-05-0040)

  • Alpha 70mm (P/N 372-05-0050)

  • Pro 68mm (P/N 372-05-0055)

  • Pro 70mm (P/N 372-05-0060)

  • Pro 74mm (P/N 372-05-0070)

Vehicle Fitment:
Compatible with all Honda B-Series engines:

• B16A/B

• B17A

• B18A/B/C

• B20B/Z

Included:

• (1) Skunk2 Ultra Street Intake Manifold (Black)

• (1) Intake Manifold Gasket

• Mounting Hardware