Photos shown for illustration; shade and shape may differ slightly.
Skunk2 Ultra Race 5.0L Centre Feed Intake Manifold for Honda B16A, B17A, B18A, B18C and B20A Engines
Supplier stock
The Skunk2 Ultra Race intake manifold is made for race engines: a 5.0 litre plenum, short tapered runners and a 90 mm throttle body flange. It favours peak power at high rpm, on Honda B16A, B17A, B18A, B18C and B20A engines.
Specifications
| Brand | Skunk2 Racing |
| Code | 307-05-9080, 307-05-9085 |
| Material | A356 aluminium, cast |
| Construction | Modular, removable plenum |
| Plenum volume | 5.0 litres |
| Plenum feed | Centre feed |
| Throttle body flange | 90 mm, Ford 5.0 pattern |
| Runners | Tapered, 152 mm, with 87 mm velocity stacks |
Which cars it fits
- Honda B-series engines, VTEC and non-VTEC: universal flange
What to check
- Skunk2 lists it for racing only, not for road use.
- Pick the plenum by power: 3.5 litres up to 600 hp, 4.5 litres for 600-1000 hp, 5.5 litres above 1000 hp. 1 and 2 litre spacers are sold separately.
- It has provisions for a second set of injectors underneath.
- The centre feed moves the throttle body forward, above all the runners, so air reaches the cylinders evenly.
- Skunk2 recommends it for naturally aspirated engines up to 450 hp and turbo or supercharged engines from 650 hp up.