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The HKS RS US CIVIC Si is designed for the 2017-2021 Honda Civic. Match manufacturer part number 70020-KH101, the complete vehicle or system configuration, dimensions, connections, and included components before ordering.
Key Features
- Dry High-Flow Filter: Captures contaminants while allowing 20% more airflow than stock for consistent engine breathing and longevity.
- Integrated Heat Shield: Aluminum shield with insulation blocks engine bay heat to pull in cooler intake air and prevent power loss.
- Bolt-On Design: Precision-machined brackets ensure perfect alignment with OEM mounting points for easy installation.
- Dyno-Proven Gains: Delivers up to 10hp increase at peak with improved mid-range torque on stock turbo Civic Si.
- Yes, direct bolt-on for all USDM Civic Si (FC2 chassis) with L15B7 engine. no trimming or adjustments required.
- Dry dual-layer cotton filter element with anodized aluminum pipe and heat shield for corrosion resistance and durability.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2017-2021 | Honda | Civic | Confirm engine, body style, system configuration, and exact interface |
Specifications
| Brand | HKS |
|---|---|
| Manufacturer Part Number | 70020-KH101 |
| Product Type | Cold Air Intakes |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new HKS cold air intakes identified by manufacturer part number 70020-KH101, in the quantity stated by the title. Additional wiring, pipes, hoses, clamps, fittings, gaskets, fluids, tuning, tools, and installation hardware are included only when expressly listed for this exact part number.
About HKS
HKS develops exhaust, forced-induction, cooling, engine, electronics, and exterior components for import and performance vehicle applications.
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Frequently Asked Questions
How do I confirm this HKS airflow or boost part fits?
Match the manufacturer part number, listed vehicle, engine and turbo configuration, piping diameter, connector, mounting points, and available installation space.
Will tuning be required after installation?
Calibration needs depend on the product, vehicle, boost target, sensors, fuel system, and supporting modifications. Confirm the complete setup with a qualified tuner before operation.
Are all pipes, couplers, valves, and hardware included?
Included components vary by exact part number. Use the What’s Included section and current HKS documentation to identify any separate piping, couplers, clamps, sensors, or adapters.
Installation Instructions
Follow the current HKS instructions and the vehicle service manual for part number 70020-KH101. Compare every component, connection, dimension, and mounting point before disassembly. Use the correct tools, fasteners, torque values, fluids, wiring protection, and safety procedures, then inspect for leaks, interference, heat exposure, clearance, and secure operation before normal use.
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