What is the difference between the Intercooler Kit for FL5 and the core-only version?

This part number is the full Intercooler Kit for FL5, meaning the R Type core plus the complete aluminium piping kit. The core-only version, 13001-AH008, is designed to work with the factory piping and installs in about 90 minutes. The full kit takes around four hours because the pipework is replaced too.

How much cooler does it run than the factory intercooler?

HKS measured charge temperature at the intercooler outlet at 30.3 degrees against 56.0 degrees for the factory core at 7000rpm, so around 25 degrees cooler. Cooling efficiency rises from 67 percent to 88 percent at the same engine speed, which is the figure that matters on a sustained run.

Does fitting require cutting the car?

Some modification is needed. HKS specifies reshaping the air guide inside the bumper, relocating the outside air temperature sensor, and shaving a bracket on the body so the piping clears. The bumper reinforcement itself does not need modifying, which keeps the structural part of the car untouched.

Why does the piping matter if the core is already bigger?

The factory inlet and outlet use rubber hose that swells under high boost, and that expansion is lost pressure the engine never sees. The 60mm aluminium bends in this kit cannot expand, so the boost the ECU commands reaches the cylinders. HKS also smooths the internal shape to reduce restriction.

Will it support a turbocharger upgrade later?

Yes. HKS states the core in the Intercooler Kit for FL5 is sized to cover everything from a boost increase on the factory turbo through to a turbine upgrade, which is why the core area is 22.4 percent larger than factory. Owners planning the HKS GT4845 turbine kit should fit this cooling first.

How much power does it add?

HKS measured a gain of 2kW and 3.7Nm on a Japan-market FL5. That is modest as a peak figure, and it is not the point: the value is holding charge temperature 25 degrees lower so the ECU does not pull timing on the second or third hard lap. Cooling is what sustains output.

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Description

HKS R Type Intercooler Kit for FL5 Honda Civic Type R

HKS’s R Type Intercooler Kit for FL5 Honda Civic Type R is the full answer rather than half of one, because it pairs the enlarged R Type core with the complete aluminium piping kit in a single part number. The numbers behind it are the argument: 22.4 percent more core area, cast aluminium end tanks in place of the factory resin, and charge temperature at the intercooler outlet measured at 30.3 degrees against 56.0 degrees for the factory core at 7000rpm. Cooling efficiency rises from 67 to 88 percent at the same engine speed. The piping matters as much as the core, because the factory rubber hose swells under high boost and gives away pressure that never reaches the engine.

Design and Performance

The factory core carries eleven fins and ten tubes in a 639 x 158 x 64mm package with resin tanks; the R Type measures 695 x 178 x 100mm with ten fins and nine tubes and cast aluminium tanks. Fewer, larger tubes in a deeper core is a deliberate trade for flow and volume, and the result is a charge that arrives 25 degrees cooler at 7000rpm. Adding the piping to make the full Intercooler Kit for FL5 replaces the factory rubber hose sections with 60mm aluminium bends, and because aluminium does not swell the boost the ECU commands is the boost the engine receives. HKS measured a gain of 2kW and 3.7Nm on a Japan-market FL5 with this kit fitted, and states the core is sized to carry everything from a boost increase through to a turbo upgrade.

Construction

Cast aluminium end tanks replace resin, the bent pipes are aluminium given a mirror buff finish, and the cast pipe and core both carry the HKS logo. Silicone hose and hose bands make the joints, and HKS supplies the brackets and the special bolts and nuts rather than expecting the installer to source them. A masking sheet for logo spray is included with the core, for owners who want to paint it.

Features

The Intercooler Kit for FL5 supplies core and piping together, so nothing else is needed to complete the charge path
Cast aluminium end tanks in place of the factory resin tanks
Aluminium piping removes the pressure loss caused by factory rubber hose swelling under boost
Mirror buff finish on the bent pipework with HKS logos on the cast pipe and core
Core in the Intercooler Kit for FL5 is sized for everything from a boost increase to a turbocharger upgrade
Masking sheet for logo spray included with the core

Specifications

Core size: 695 x 178 x 100mm (factory core 639 x 158 x 64mm)
Core area increase: 22.4 percent over factory
Core specification: 10 fins, 9 tubes, cast aluminium tanks
Charge temperature at intercooler outlet: 30.3 degrees at 7000rpm (factory 56.0 degrees)
Cooling efficiency: 88 percent at 7000rpm (factory 67 percent)
Piping inner diameter: 60mm aluminium (factory 55mm rubber hose)
Mounting: front mount, factory core location
Product weight: 9.5kg
Installation time: approximately 4 hours

What’s Included

R Type Intercooler Kit for FL5 core with cast aluminium tanks
Aluminium bent pipes, inlet and outlet
Cast pipes, inlet and outlet
Silicone hose and hose bands
Brackets, inlet and outlet, with special bolts and nuts
Masking sheet for logo spray

Applications

Honda Civic Type R: FL5 | 2023-2025 | K20C

Notes

Installation requires modifying the air guide inside the bumper, relocating the outside air temperature sensor, and shaving a bracket on the body to clear the piping. HKS confirms no modification to the bumper reinforcement is needed.
The two halves of this kit are also sold separately: the HKS R Type Intercooler Core for FL5 Honda Civic Type R 13001-AH008 and the HKS Intercooler Piping Kit for FL5 Honda Civic Type R 13002-AH002. Buying the full kit is the cheaper route if you want both.
Power figures were recorded by HKS on a Japan-market FL5, which leaves the factory with a different output rating from the US car, so the gain rather than the peak is the meaningful number
Browse the full HKS range on Bulletproof Automotive

Frequently Asked Questions

What is the difference between the Intercooler Kit for FL5 and the core-only version? This part number is the full Intercooler Kit for FL5, meaning the R Type core plus the complete aluminium piping kit. The core-only version, 13001-AH008, is designed to work with the factory piping and installs in about 90 minutes. The full kit takes around four hours because the pipework is replaced too.
How much cooler does it run than the factory intercooler? HKS measured charge temperature at the intercooler outlet at 30.3 degrees against 56.0 degrees for the factory core at 7000rpm, so around 25 degrees cooler. Cooling efficiency rises from 67 percent to 88 percent at the same engine speed, which is the figure that matters on a sustained run.
Does fitting require cutting the car? Some modification is needed. HKS specifies reshaping the air guide inside the bumper, relocating the outside air temperature sensor, and shaving a bracket on the body so the piping clears. The bumper reinforcement itself does not need modifying, which keeps the structural part of the car untouched.
Why does the piping matter if the core is already bigger? The factory inlet and outlet use rubber hose that swells under high boost, and that expansion is lost pressure the engine never sees. The 60mm aluminium bends in this kit cannot expand, so the boost the ECU commands reaches the cylinders. HKS also smooths the internal shape to reduce restriction.
Will it support a turbocharger upgrade later? Yes. HKS states the core in the Intercooler Kit for FL5 is sized to cover everything from a boost increase on the factory turbo through to a turbine upgrade, which is why the core area is 22.4 percent larger than factory. Owners planning the HKS GT4845 turbine kit should fit this cooling first.
How much power does it add? HKS measured a gain of 2kW and 3.7Nm on a Japan-market FL5. That is modest as a peak figure, and it is not the point: the value is holding charge temperature 25 degrees lower so the ECU does not pull timing on the second or third hard lap. Cooling is what sustains output.

About HKS

HKS is a Japanese performance engineering brand founded in 1973 and headquartered in Fujinomiya, Shizuoka, with a long-standing reputation for developing high-quality aftermarket parts and motorsport-proven technology for enthusiast and professional applications. Known for innovations in turbocharging and engine performance, HKS produces a broad range of components including exhaust systems, turbo kits, electronics / engine management, and suspension solutions, with product development heavily influenced by decades of involvement in racing disciplines such as circuit time attack, drag, and drifting.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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HKS R Type Intercooler Kit for FL5 Honda Civic Type R [13001-AH007]

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HKS R Type Intercooler Kit for FL5 Honda Civic Type R

Design and Performance

Construction

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About HKS

Reviews