Skunk2 309-05-1060 Alpha Series 70mm Throttle Body for 02-05 Civic Si/0

Vehicle Fitment

• 2002-2005 Honda Civic Si (K20A3 2.0 L I4)
• 2002-2006 Acura RSX (Type S/Base) (K20A/K20Z1 2.0 L I4)

Features

• Alpha Series 70 mm throttle body designed for high-flow intake performance
• Precision die-cast aluminum housing with fine shot-blasted surface finish
• Precision-machined brass throttle plate for smooth throttle control
• Sealed ball bearings for smooth, leak-free operation and reduced wear
• Compatible with OEM throttle cable for straightforward install
• Dual bolt patterns (PRB/PRC & RBC/RRC) support multiple intake manifolds
• Idle adjustment screws included for finer tuning
• Includes new throttle body gasket and mounting hardware

Specifications

• Part Number: 309-05-1060
• Throttle Bore: 70 mm
• Material: Die-cast aluminum
• Throttle Plate: Machined brass
• Bearing Type: Sealed ball bearings
• Finish: Fine shot-blasted surface
• Fitment: 2002-2005 Civic Si & 2002-2006 RSX (K-Series engines)
• Installation: Requires compatible intake manifold flange

Included Components

• 1x 70 mm Alpha Series throttle body
• 1x Throttle body gasket
• Mounting hardware kit

Product Description

The Skunk2 309-05-1060 Alpha Series 70 mm Throttle Body is a performance-oriented intake upgrade engineered to increase airflow into K-Series engines found in 2002-2005 Honda Civic Si and 2002-2006 Acura RSX applications. Featuring a large 70 mm throttle bore and precision-machined brass plate, this throttle body delivers improved flow over stock units, which can support enhanced throttle response and broader powerband performance on modified or naturally aspirated setups. Precision die-cast aluminum construction with a fine shot-blasted finish provides durability and a premium look under the hood.

Installation includes a new gasket and hardware, and the unit is compatible with the OEM throttle cable for a straightforward fit. Dual bolt patterns allow fitment on a variety of intake manifolds, but because of the larger 70 mm diameter, it must be used with a Skunk2 Pro Series intake manifold or another manifold with a matching throttle flange to ensure proper sealing and idle air control functionality. This makes it a great choice for enthusiasts looking to unlock greater airflow and performance potential on K-Series powered builds.