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Inter Coolers

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DISPLAYING 1 to 4 (of 4 products)
8166KIT
Product Information
Product Information

Intercooler and Pressure Pipe Kit – Complete Charge Air System Solution

This complete intercooler and pressure pipe kit is designed for Porsche 991.2 GT2 RS models. It provides a comprehensive replacement solution for the entire charge air system, including both intercoolers, two pressure pipes and a throttle body to intercooler seal.

Fits:

  • Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19       

Modern turbocharged Porsche engines rely on a highly efficient and sealed intake system to deliver performance. Over time, components such as intercoolers, plastic pressure pipes and rubber connectors can degrade, leading to boost leaks, reduced cooling efficiency and loss of power. This complete kit replaces all key components in one package to restore performance and reliability.

What This Intercooler & Pressure Pipe Kit Does

The charge air system compresses air via the turbochargers, cools it through intercoolers and delivers it into the engine for combustion.

This kit ensures:

• Efficient cooling of compressed air via both intercoolers
• Consistent and leak-free boost pressure across all pipe connections
• Proper airflow from turbochargers to intake system
• Reduced intake temperatures for improved combustion efficiency
• Reliable sealing and mounting across the entire system

Replacing the full system helps maintain optimal turbo performance and engine efficiency.

What Is Included in the Kit

• 2 x Intercooler 
• 2 x Intercoolers Pressure Hose Upper (left and right)
• 2 x Intercooler Pressure Hose Lower (left and right)
• 2 x Intercooler to Cut off Valve Pressure Pipe

This complete set replaces all major airflow and connection components within the turbo intake system

CSF High Performance GT2 RS Intercooler Specification:

• Numbers of Tubes = 28
• Tube Height = 3mm Rolled Tube
• Fin Height = 4.85mm
• Weight = 8.146KG
• Billet End Tanks with TIG Welding

The CSF High-Performance Intercoolers for the GT2 RS boasts 13 more cooling rows than the stock intercooler, boasting 28 rows in total vs. the stock 15. The tube height and fin height is also maximised with the CSF core boasting a dual-row 3mm rolled tube vs. the factory 7mm height and the CSF core uses a fin height of 4.85mm vs. the factory 7mm. As you can see, the CSF core maximises performance in every area.

Why Intercooler and Boost System Components Fail

Turbocharged systems operate under high pressure and extreme temperatures, which leads to wear across multiple components.

Common issues include:

  • Cracked or weakened pressure pipes - Pipes can split or degrade over time due to heat and pressure.
  • Boost leaks at joints and seals - Connections and sealing surfaces can wear, causing pressure loss.
  • Intercooler efficiency loss - Internal contamination or ageing reduces cooling effectiveness.
  • Rubber adaptor wear - Rubber components can harden, crack or lose flexibility.

Symptoms of a Failing Charge Air System

• Loss of engine power and acceleration
• Reduced turbo boost pressure
• Hissing noises under load
• Poor throttle response
• Increased fuel consumption
• Engine warning lights related to boost pressure

Replacing all components together ensures a complete and long-lasting solution.

Why Upgrade to a Complete Kit

  • All-in-One Replacement - Eliminates the need to diagnose and replace individual failing components.
  • Restore Full Performance - Ensures correct boost pressure, airflow and cooling efficiency.
  • Prevent Future Failures - Replaces ageing parts across the entire system to avoid repeat repairs.
  • Improve Engine Efficiency - Optimised airflow and cooling improve combustion and power delivery.
  • Ideal for Preventative Maintenance or Performance Builds - Suitable for both standard maintenance and performance-focused upgrades.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

8166KIT
99111064080
99111063980

The product you are viewing cross references to these numbers
8166
Product Information
Product Information
CSF High-performance intercoolers.

For a long time the only solution for a Porsche 991 GT2 RS intercooler upgrade was not an upgrade, but a band-aid for the stock 1990's style water spray system which sprays water from a reservoir in the frunk and onto the intercoolers. The band-aid was to install a larger capacity water tank which simply delayed the inevitable running out of water and output to be automatically limited by the factory ECU to try to keep the engine safe. Until you refilled the reservoir again it's likely your 991 GT2 RS would struggle with charge temps and limited output.

Experts in cooling CSF and PWR have joined operations to deliver a High-Performance Intercooler Upgrade for the 991 GT2 RS which eliminates heat soak and lowers charge air temps on stock, tuned and tracked cars. CSF achieves this by using an F1 performance grade core which dramatically improves the efficiency of the intercoolers within the same space constraints.

The CSF High-Performance Intercoolers for the GT2 RS boasts 13 more cooling rows than the stock intercooler, boasting 28 rows in total vs. the stock 15. The tube height and fin height is also maximised with the CSF core boasting a dual-row 3mm rolled tube vs. the factory 7mm height and the CSF core uses a fin height of 4.85mm vs. the factory 7mm. As you can see, the CSF core maximises performance in every area.

The differences don't just end in performance. The CSF High-Performance Intercoolers for the GT2 RS also boast reliability and durability improvements. Customer feedback has reported numerous failures with the standard end-tanks which uses an un-secure and failure-prone crimped and gasketed mechanism which can leak over time with numerous boost cycles and increased boost pressure with tuned cars, whereas the CSF High-Performance Intercoolers for the GT2 RS is 100% TIG welded for maximum reliability and durability.

Stock Porsche Intercooler Specification :
• Numbers of Tubes = 15
• Tube Height = 7mm
• Fin Height = 7mm
• Weight = 8.146KG
• Cast End Tanks, Crimped with Gaskets

Cross reference numbers
99111064073, 99111063973

CSF High Performance GT2 RS Intercooler Specification:
• Numbers of Tubes = 28
• Tube Height = 3mm Rolled Tube
• Fin Height = 4.85mm
• Weight = 8.146KG
• Billet End Tanks with TIG Welding

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

8166
8116
99111064080
99111063980

The product you are viewing cross references to these numbers
BBI9911070002
Product Information
Product Information
BBI intercooler system for Porsche 991.2 GT2 RS.

bbi

BBi worked with C&R racing to develop and validate intercoolers for the GT2 RS system. The new system is enhanced in every way to maximize cooling performance. This system went through extensive validation in 1/2 mile and road course enviroments as well as hot weather condition testing. This is the same intercooler system as installed on the BBi VMax GT2 RS that went 226.95mph, becoming the fastest GT2 RS 991 in the world.

• Number of Tubes: 28 (OE: 15)
• Tube Height: 3mm (OE: 7mm)
• Fin Height: 4.85mm (OE: 7mm)
• Weight: 18lbs (same as OE)
• Design: CNC Endtanks, welded (OE: cast endtanks, crimped on)

As part of PWR Advanced Cooling Technology, C&R is a full-scale cooling provider, supplying R&D, testing and production of cooling solutions to top-tier race teams, performance automotive niche vehicle manufacturers, and specialty car builders who want only the best for their projects. This kit is ready for installation (plug & play) and features a tube and fin core for ultimate cooling. We opted for a tube and fin core instead of bar and plate for its lighter weight and more efficient thermal inertia. This means it cools quickly when exposed to direct air flow.

Features:

• CNC Machined Billet End Tanks, Inlet/Outlet Ports
• Tube & Fin 2-row core, designed by PWR
• Designed to Use OEM Plumbing and Shrouds
Compatible with Porsche 991.2 GT2 RS

Made in USA

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BBI9911070002
99111063980
99111064080

The product you are viewing cross references to these numbers
Special Order item
99104480639
Product Information
Product Information
Water tank charge air cooler. 

porsche


Fits:
Porsche 991.2 GT2 RS

Water tank

An additional water tank for charge air cooling increases the standard volume by around 9 litres and ensures that the range is significantly extended between water refills. 

As a result, this allows the intake air temperature to be cooled for longer, with the objective of achieving maximum power yield.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99104480639
9P3805386
9P3805386A
9P3805386B

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 4 products)
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About Inter Coolers

Porsche Inter Coolers

At Design911, we supply a wide range of inter coolers for Porsche models, helping you maintain, personalise and enjoy your car.

Why do Porsche Inter Coolers matter?

Inter Coolers affect how efficiently the engine in your Porsche runs, especially on turbocharged models. Over time they can suffer from leaks, corrosion and reduced efficiency, or simply no longer be suitable once you start tuning the engine. Replacing tired or undersized intercoolers helps your Porsche stay reliable, consistent and enjoyable to drive, particularly under heavy load.

  • Keep your Porsche looking smart rather than tired or neglected
  • Help protect the surrounding area from dirt and corrosion where relevant
  • Reduce minor niggles such as looseness, rattles or mismatched parts
  • Support long-term enjoyment, pride of ownership and potential resale value

Common options & kits

Individual replacement parts 

Specific items to address a particular area or issue without changing everything at once.

  • Ideal for targeted repairs
  • Lets you replace only what is needed
  • Helps keep initial costs under control

Matched sets or pairs 

Components supplied together so both sides or related items are renewed at the same time.

  • Consistent feel and performance
  • Helps avoid uneven wear or behaviour
  • A sensible choice for routine maintenance

Complete kits 

Grouped parts designed to refresh a whole system or area in one go, useful for upgrades and restorations.

  • Everything specified in a single package
  • Saves time compared with sourcing parts individually
  • Ideal when upgrading or restoring your Porsche

Brands & quality options

At Design911, we stock genuine Porsche parts where available, plus OEM-equivalent and carefully selected aftermarket brands. This lets you choose between keeping things original, adding subtle upgrades, or managing budgets on everyday maintenance.

Agency Power 

Agency Power produces a range of functional racing and performance products, including parts for Porsche models. Components are developed through track use and product testing to help ensure fitment and consistency.

Alpha 

Alpha Performance, part of AMS, engineers intercooler systems and related components with a focus on efficient cooling and durability. Their Porsche products are developed using computer-aided design and motorsport experience to optimise fitment and airflow.

BBi Autosport 

BBi Autosport is a Porsche-focused motorsport and tuning company with decades of combined racing experience. Their performance parts are developed from track programmes and professional racing, with attention to fit, function and workshop use.

CSF 

CSF designs and manufactures high‑performance Porsche cooling products for motorsport and enthusiast use. Their intercoolers and radiators focus on efficient heat rejection, robust construction and reliable fitment.

Denso 

Always check the exact part number and fitment data when choosing Denso components to ensure the correct match for your specific Porsche model and engine.

When should you review or replace your Porsche inter coolers?

Checking inter coolers regularly helps you spot wear, damage or age-related deterioration before it affects comfort, refinement or leads to more expensive repairs later on.

  • Existing parts are worn, cracked, scuffed, faded, corroded or missing
  • You notice looseness, vibration or an untidy appearance around the area they sit in
  • You have had related work carried out and want everything to look and feel consistent
  • You want the car to feel smarter and better cared for in daily use or before resale

If any of these apply, it is a good time to review your inter coolers and replace anything that is past its best, so your Porsche stays dependable and enjoyable to drive.

Explore Porsche inter coolers with Design911

Browse inter coolers for Porsche at Design911 — from individual parts to complete kits — and find options to suit everyday maintenance, upgrades and full projects.

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