Skunk2 Pro Series Throttle Body Honda K-Series K20 K24
Skunk2 Pro Series Throttle Body – Honda K-Series K20 / K24 – 70mm & 74mm – Black or Silver
Upgrade the airflow capability of your Honda K-Series engine with the Skunk2 Pro Series Throttle Body, available from Performance Cars Parts UK in 70mm and 74mm bore sizes with a choice of Silver or Black anodised finishes.
Designed for modified Honda K-Series engines with increased airflow requirements, the Skunk2 Pro Series Throttle Body is an excellent upgrade for naturally aspirated and forced-induction performance builds.
Skunk2 specifically designed these throttle bodies around Honda K20A, K20A2, K20A3 and K20Z1 engines, with direct compatibility for PRB/PRC-style throttle-body applications. Later K-Series engines and certain K24 applications may require the correct throttle-body adapter or compatible intake manifold.
Whether you’re building a responsive naturally aspirated K20, a high-flow K-Series track car, or a turbocharged/supercharged Honda engine, the larger Skunk2 throttle body helps remove an airflow restriction between the intake system and intake manifold.
Available Options
| Size | Colour | Skunk2 Part Number / SKU |
|---|---|---|
| 70mm | Silver | 309-05-0080 |
| 74mm | Silver | 309-05-0090 |
| 70mm | Black | 309-05-0085 |
| 74mm | Black | 309-05-0095 |
Skunk2 lists 309-05-0080 as the standard-finish 70mm version, 309-05-0090 as the standard-finish 74mm version, 309-05-0085 as the black 70mm version and 309-05-0095 as the black 74mm version.
Why Upgrade to a Larger Throttle Body?
As engine performance is increased through modifications such as intake manifolds, performance camshafts, cylinder-head work, exhaust upgrades, forced induction and ECU tuning, the engine’s airflow requirement increases.
A larger-bore throttle body can help support the additional airflow required by a modified engine. Skunk2 specifically states that its larger Pro Series throttle bodies are designed for modified engines with increased airflow requirements across the powerband.
70mm Skunk2 Throttle Body
The 70mm option is an excellent choice for performance street and track K-Series builds where increased airflow is required without immediately stepping up to the larger 74mm bore.
Available as:
309-05-0080 – 70mm Silver
309-05-0085 – 70mm Black
74mm Skunk2 Throttle Body
For engines with greater airflow requirements, the 74mm Skunk2 Pro Series Throttle Body provides an even larger throttle opening and is particularly suited to more extensively modified naturally aspirated or forced-induction K-Series builds.
Available as:
309-05-0090 – 74mm Silver
309-05-0095 – 74mm Black
Both sizes are designed to provide smooth throttle operation using a precision-machined throttle plate and sealed ball bearings.
Key Features
- Available in 70mm or 74mm bore sizes
- Choice of Silver or Black anodised finish
- Designed for Honda K-Series performance applications
- Specifically listed for K20A, K20A2, K20A3 and K20Z1 engines
- CNC machined from forged billet 6061-T6 aluminium
- Precision-machined brass throttle plate
- Sealed ball bearings for smooth throttle operation
- Compatible with the OEM throttle cable
- Retains the IACV circuit
- Corrosion-resistant anodised construction
- Suitable for aggressive naturally aspirated and forced-induction applications
- New throttle-body gasket and hardware included
- Direct replacement for compatible PRB / PRC-style throttle bodies
- Skunk2 performance engineering
These specifications are confirmed by Skunk2 across the four variants.
Honda K20 / K24 Compatibility
The officially stated engine applications are:
K20A
K20A2
K20A3
K20Z1
Skunk2 specifically identifies the 2002–2005 Honda Civic Si and 2002–2006 Acura RSX Base / Type-S chassis as applications for these throttle bodies.
Honda also confirms that the 2002 Civic Si used the 2.0-litre K20A3, while the K20A2 was used in the original RSX Type-S.
Vehicle Fitment
Direct-fit applications include Honda Civic Type R EP3 and Honda Integra Type R DC5 models using compatible K20A/K20A2 PRB/PRC-style cable-operated throttle systems.
Skunk2 specifies compatibility with K20A, K20A2, K20A3 and K20Z1 engines.
Please note: Later K-Series vehicles equipped with electronic Drive-By-Wire throttle control are not direct replacements and may require additional adapters, intake-manifold changes and/or cable-throttle conversion. K24 compatibility depends on the intake-manifold and throttle configuration and should not be considered universal vehicle fitment.
Ideal For
This Skunk2 throttle body is ideally suited to:
- Honda K-Series engine builds
- Modified K20 engines
- K20/K24 hybrid performance builds with compatible intake setups
- K-swapped vehicles
- Performance street cars
- Track cars
- Naturally aspirated performance engines
- Turbocharged K-Series builds
- Supercharged K-Series builds
- Engines fitted with upgraded intake manifolds
- High-flow intake systems
What’s Included?
Each Skunk2 Pro Series Throttle Body includes:
- 1 × Skunk2 Pro Series Throttle Body
- 1 × New throttle-body gasket
- Required installation hardware
Skunk2 confirms the gasket and hardware are supplied with these throttle bodies.
Colour Options
Silver
The classic Skunk2 performance appearance, ideal for customers wanting a traditional machined/anodised performance-engine-bay finish.
Available as:
70mm – SKU 309-05-0080
74mm – SKU 309-05-0090
Black
The black anodised versions provide a more subtle appearance while retaining the corrosion resistance and durability expected from the Pro Series design. Skunk2 explicitly describes the 70mm black model as black anodised.
Available as:
70mm Black – SKU 309-05-0085
74mm Black – SKU 309-05-0095
Which Size Should I Choose?
Choose 70mm if:
You have a moderately modified K-Series engine, performance street car or naturally aspirated build and want increased airflow while retaining a relatively moderate throttle-body diameter.
Choose 74mm if:
You have a more heavily modified engine, high-flow intake manifold, high-performance naturally aspirated build or forced-induction setup requiring greater airflow capacity.
The rest of the intake system should be appropriately matched to the selected throttle-body diameter. ECU calibration may also be required depending on the engine specification and modifications.
Installation Notes
Important: Please verify your intake manifold and throttle-body configuration before ordering.
Skunk2 states these units are a direct replacement for PRB/PRC-style throttle bodies, while later K-Series engine configurations require a suitable throttle-body adapter.
Professional installation is recommended for modified or K-swapped vehicles.
Buy Skunk2 Performance Parts in the UK
Order your Skunk2 Pro Series Honda K-Series Throttle Body from Performance Cars Parts UK.
Choose from:
70mm Silver – 309-05-0080
74mm Silver – 309-05-0090
70mm Black – 309-05-0085
74mm Black – 309-05-0095
Perfect for enthusiasts building performance Honda K-Series engines for road, track, naturally aspirated or forced-induction applications.
Shop online at www.performancecarsparts.co.uk
Delivery & Returns
UK Delivery
We deliver throughout the United Kingdom using reliable courier services. Delivery times vary depending on stock availability, supplier location, product size and destination.
Shipping charges are calculated at checkout where applicable. Larger, heavier, specialist or supplier-direct items may incur additional delivery charges.
Dispatch Times
We aim to dispatch in-stock products as quickly as possible. Some specialist, imported, made-to-order or supplier-direct performance parts may require additional processing time.
If you require a product by a specific date, please contact us before ordering so availability can be checked.
Tracking
Tracking information will be provided where available once your order has been dispatched.
International Delivery
International shipping may be available for selected products and destinations. Import duties, taxes, customs charges and local handling fees are normally the responsibility of the customer unless otherwise stated.
Returns
Please contact us before returning an item. Products should be returned in accordance with our returns policy and in suitable condition where applicable.
Special-order, made-to-order, customised or imported products may be subject to different cancellation and return conditions.
Damaged, Faulty or Incorrect Items
Please inspect your order as soon as it arrives. If an item is damaged, faulty or different from what you ordered, contact us promptly with your order number and clear photographs where relevant.
Vehicle Fitment
It is the customer’s responsibility to confirm product compatibility before installation. If you are unsure, contact us with your vehicle registration or VIN and the product SKU before ordering.









