Does this bundle fit both the FL5 Civic Type R and the DE5 Integra Type S?

The two components in this bundle have different fitment coverage. The PRL Billet Intercooler Upgrade fits both the 2023+ Honda Civic Type R (FL5) and the 2024+ Acura Integra Type S (DE5). The CSF High Performance Radiator fits the FL5 Civic Type R only and does not have a direct-fit version for the DE5. Confirm both fitments against your specific vehicle before ordering.

Does this bundle require a tune or ECU calibration to install?

No. Both components are direct bolt-on upgrades that require no ECU calibration or tuning to install. The PRL intercooler is designed to maintain factory-compatible pressure differential and does not trigger boost or fuel trim corrections on its own.

How much does the PRL Billet Intercooler actually improve charge air temperatures compared to stock?

PRL's own dyno testing showed the intercooler reached heat soak equilibrium 66% later than the factory unit and stabilized approximately 26°F cooler at full heat soak. At full heat soak, the PRL intercooler produced 270 whp compared to 237 whp on the factory unit, a 33 whp retention difference. The PRL intercooler also reduced average pressure drop from 0.6 psi on the factory unit to 0.4 psi, meaning the intercooler causes less restriction to boost flow.

How much does the CSF radiator improve coolant temperatures?

CSF's testing on a tuned FL5 showed the radiator decreased engine coolant temperatures by 6 to 8% compared to the factory radiator. The CSF unit uses a larger dual-row 42mm aluminum core with CSF's exclusive B-Tube technology, which increases heat transfer by approximately 15% over standard oval welded tubes. The 5mm fin technology also increases heat exchange surface area, and the OEM plastic tank single-row design is replaced entirely with an all-aluminum TIG-welded construction.

Why do the intercooler and radiator work better together than either does alone?

The FL5 and DE5 factory cooling systems manage charge air and engine coolant through separate but adjacent paths in the front bumper. When the intercooler heat-soaks, it begins radiating heat backward into the engine bay and into the airflow reaching the radiator. When the radiator is also undersized, coolant temperatures rise faster, which further raises oil and engine bay temperatures and compounds heat-soak on the intercooler. Upgrading both at the same time addresses both heat sources simultaneously; the intercooler removes more heat from the charge air before it enters the engine, and the radiator removes more heat from the coolant, reducing the thermal load the entire system is managing.

Does the CSF radiator require any modifications to install on the FL5?

No modifications are required. The CSF High Performance Radiator is a direct drop-in replacement that is compatible with the OEM fan shroud, hoses, and all factory mounting points. No trimming, drilling, or bracket fabrication is needed.

Is the PRL Billet Intercooler compatible with the factory charge pipes?

Yes. The PRL Billet Intercooler Upgrade uses factory-fitment flanges and is compatible with the stock charge pipes. For owners who want to maximize the full benefit of the intercooler upgrade, PRL also offers a Charge Pipe Upgrade Kit for the FL5 and DE5 platforms, which addresses the factory charge pipe restriction identified in PRL's own testing data.

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Description

PRL Motorsports Ultimate Cooling Bundle for FL5 Honda Civic Type R, and DE5 Acura Integra Type S

The Ultimate Cooling Bundle pairs PRL’s Billet Intercooler Upgrade with CSF’s High-Performance Aluminum Radiator into a single dual-front cooling solution for the FL5 Civic Type R and DE5 Integra Type S. The PRL Billet IC uses 3.9″ thick high-density bar-and-plate construction with CNC-machined billet aluminum end tanks, lowering IATs and supporting over 600 HP of airflow while staying direct-fit to factory charge pipes. The CSF Radiator adds a thicker dual-row aluminum core for improved coolant capacity and heat rejection, and TIG-welded all-aluminum construction. Together they target the two most common thermal weak points on the 2.0T platform, and the bundle is priced below the sum of the individual parts.

Features

Dual-front cooling solution — addresses both IAT and coolant temperature simultaneously
PRL Billet Intercooler Upgrade with 3.9″ thick high-density bar-and-plate core
CNC-machined billet aluminum end tanks on the intercooler
Supports over 600 HP of airflow at the intercooler
CSF High-Performance Radiator with 42mm 2-row aluminum core
All-aluminum TIG-welded radiator construction
Choose your intercooler finish: raw aluminum, or powder-coated black
Both components are direct fit — no trimming or tuning required
Bundle pricing — saves versus buying components separately

Specifications

PRL Billet Intercooler: 3.9″ thick bar-and-plate core, billet aluminum end tanks, supports 600+ HP airflow, OEM charge pipe compatibility
CSF High-Performance Radiator: 42mm 2-row aluminum core, all-aluminum TIG-welded, compatible with OEM fan shroud, hoses, and mounting points
Intercooler finish options: Raw aluminum, or powder-coated black

Applications

Honda Civic Type R: FL5 | 2023-present
Acura Integra Type S: DE5 | 2024-present

Notes

No ECU calibration required
Both components are direct bolt-on with no modifications
For the lighter tube-and-fin core, see our PRL Tube and Fin Intercooler listing
The CSF radiator is designed specifically for the FL5 platform, to confirm fitment if installing on DE5 contact us

Frequently Asked Questions

Does this bundle fit both the FL5 Civic Type R and the DE5 Integra Type S? The two components in this bundle have different fitment coverage. The PRL Billet Intercooler Upgrade fits both the 2023+ Honda Civic Type R (FL5) and the 2024+ Acura Integra Type S (DE5). The CSF High Performance Radiator fits the FL5 Civic Type R only and does not have a direct-fit version for the DE5. Confirm both fitments against your specific vehicle before ordering.
Does this bundle require a tune or ECU calibration to install? No. Both components are direct bolt-on upgrades that require no ECU calibration or tuning to install. The PRL intercooler is designed to maintain factory-compatible pressure differential and does not trigger boost or fuel trim corrections on its own.
How much does the PRL Billet Intercooler actually improve charge air temperatures compared to stock? PRL’s own dyno testing showed the intercooler reached heat soak equilibrium 66% later than the factory unit and stabilized approximately 26°F cooler at full heat soak. At full heat soak, the PRL intercooler produced 270whp compared to 237whp on the factory unit, a 33whp retention difference. The PRL intercooler also reduced average pressure drop from 0.6 psi on the factory unit to 0.4 psi, meaning the intercooler causes less restriction to boost flow.
How much does the CSF radiator improve coolant temperatures? CSF’s testing on a tuned FL5 showed the radiator decreased engine coolant temperatures by 6 to 8% compared to the factory radiator. The CSF unit uses a larger dual-row 42mm aluminum core with CSF’s exclusive B-Tube technology, which increases heat transfer by approximately 15% over standard oval welded tubes. The 5mm fin technology also increases heat exchange surface area, and the OEM plastic tank single-row design is replaced entirely with an all-aluminum TIG-welded construction.
Why do the intercooler and radiator work better together than either does alone? The FL5 and DE5 factory cooling systems manage charge air and engine coolant through separate but adjacent paths in the front bumper. When the intercooler heat-soaks, it begins radiating heat backward into the engine bay and into the airflow reaching the radiator. When the radiator is also undersized, coolant temperatures rise faster, which further raises oil and engine bay temperatures and compounds heat-soak on the intercooler. Upgrading both at the same time addresses both heat sources simultaneously; the intercooler removes more heat from the charge air before it enters the engine, and the radiator removes more heat from the coolant, reducing the thermal load the entire system is managing. The result is more stable temperatures across the board under the conditions where the stock system struggles.
Does the CSF radiator require any modifications to install on the FL5? No modifications are required. The CSF High Performance Radiator is a direct drop-in replacement that is compatible with the OEM fan shroud, hoses, and all factory mounting points. No trimming, drilling, or bracket fabrication is needed.
Is the PRL Billet Intercooler compatible with the factory charge pipes? Yes. The PRL Billet Intercooler Upgrade uses factory-fitment flanges and is compatible with the stock charge pipes. For owners who want to maximize the full benefit of the intercooler upgrade, PRL also offers a Charge Pipe Upgrade Kit for the FL5 and DE5 platforms, which addresses the factory charge pipe restriction identified in PRL’s own testing data.

About PRL Motorsports

PRL Motorsports started in 2007 as PRL Racing, a small group of enthusiasts outside Pittsburgh, Pennsylvania, united by a single goal: faster lap times. What began trackside quickly earned a reputation for engineering excellence, producing race cars capable of 9-second quarter-mile passes as early as 2007 and 6-second times by 2009. By 2011, the operation had grown into PRL Motorsports, expanding from trackside tuning into full-scale product development and fabrication across Honda, Nissan, Mitsubishi, and Subaru platforms. In 2018, PRL Motorsports made a deliberate shift to focus entirely on manufacturing, concentrating their resources on engineering and producing performance components rather than installation and tuning services. Today, PRL Motorsports operates from a 25,000 sq/ft facility in Export, Pennsylvania, staffed by over 25 professionals and equipped with CNC machining departments, automated cutting stations, dual-spindle lathes, 5-axis milling centers, and robotic loading systems running 24-hour production capacity. Their catalog covers intercooler systems, intake systems, turbocharger systems, exhaust components, and throttle body and intake manifold adapters; many of which carry CARB compliance and SEMA Garage certification. From a 9-second S13 to tuning the first 10th-generation Civic into the 10-second range in 2019, PRL Motorsports has built its reputation on one principle: never settle, always push for the best possible outcome.

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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PRL Motorsports Ultimate Cooling Bundle for FL5 Honda Civic Type R, and DE5 Acura Integra Type S [PRL-FL5DE5-COOL-BNDL-BLK/PRL-FL5DE5-COOL-BNDL-RAW]

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PRL Motorsports Ultimate Cooling Bundle for FL5 Honda Civic Type R, and DE5 Acura Integra Type S

Features

Specifications

Applications

Notes

Frequently Asked Questions

About PRL Motorsports

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