PHR 2.5" Hot Side Intercooler Pipe Kit for 2nd Gen GS300

PHR 03101502.GB

279.00 279.0 USD 279.00


  • Make
  • Model
  • Chassis Code
  • Generation
  • Intercooler Fitment
  • Material
  • Outer Diameter
  • Finish

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Shipping: 2-3 Business Days

A man wearing a welding helmet, welding tubing

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Complete Customization 

PHR offers many hot side intercooler piping options on the shelf and ready to ship. But when you need something that requires customization, here is where to get that done.

PHR will build a complete hot side intercooler pipe for your 2nd Gen Lexus GS300. We build on a chassis here at our shop to ensure that it will fit on your car.

You must contact PHR prior to ordering this. You must supply the turbo manifold, turbo, and/or intercooler to PHR for fitment on our mockup chassis unless it is deemed unnecessary. This price is for the basic coupler to turbo and coupler to intercooler style intercooler piping. If needing a different clamping style, the cost of the pipe will not change, but customer will need to purchase the additional flange and clamp assemblies.

Details are important

Exhaust Manifold Fitment

PHR provides more exhaust manifold options than any other source in the world. You will need to tell us what manifold you are using, or possibly send yours to us so we can get just the fitment just right.

Compressor Cover Considerations

This 2.5" piping works best with S-Cover (2.5" compressor outlet) turbos but can also work with H-Cover (3.0" compressor outlet) with an appropriate reducing coupler. But when considering H-cover turbos, it would make more sense to go with our 3.0" hot side intercooler piping.

Also take a look at the video from Precision Turbo below describing the difference in compressor covers.

Picture of a Supra Turbo Manifold

Features and Solutions

Focusing on what's important

Single Turbo Conversion

Our Hot Side Intercooler pipes are made specifically to fit the needs of the do-it-yourself enthusiast switching to single turbo setup. This kit is made-to-order. So it will fit a variety of intercooler and manifold combinations. We just need the details of your build to get it done. 


Made of top-quality lightweight aluminum CNC mandrel bends. Mandrel bends allow for optimal flow. The end of each section is bead rolled to keep couplers from slipping off.

Worm Gear Clamps

When considering worm gear clamps vs T-bolt clamps for the solution to clamping the couplers to the aluminum intercooler tubing, we've found that worm gear clamps are the best for this application. T-bolt clamps can create too much force, and end up collapsing the tubing, making for a looser connection over time. 

They also are not optimal for the space provided behind the bead roll due to the extra wide band, and often clamp over the bead roll instead of behind it on the tubing. This can create poor clamping.

In our experience, worm gear clamps offer the superior clamping solution in this application, and we use only the highest quality stainless worm gear clamps available.

Under the frame rail

The drop-down design of these pipes route underneath the frame rail, and around to the intercooler. This will require removal or trimming of the inner fender well plastics panels and bracket. These plastic panels and brackets block debris from the tires from entering the engine bay, and also hold up the lower plastic panels. 

We've found that removal doesn't make much of a difference for debris or dirt entering, but if you are in an exceptionally dusty or dirty area (like living on a dirt road), we'd recommend trimming the panels to fit around the piping rather than removing them. If you do choose to remove them, you will need to add some zip ties or other holding method to the lower panels as well to keep them secure.

Boost Braces

a boost braceFor high boost applications when you might even more holding capability, boost braces can be added across the coupler to create a mechanical link, that virtually ensures the pipes cannot separate and the coupler cannot pop off.

If you want to add boost braces, you will need to have the bolt bosses welded to the tubing, turbo, and/or intercooler. PHR can provide this service, but you will need to contact us to do so.

You will need one boost kit for each connection you want to make. 3 Kits would cover each connection on this kit.

Learn More

Precision Turbo Talks - Compressor Covers

Grant discusses PTE Compressor Covers


Vehicle Fitment
Make Lexus
Model GS300 (Aristo)
Chassis Code S160, S161
Generation 2nd Gen
Intercooler Fitment PHR
Product Specs
Material Aluminum
Outer Diameter 2.5 inches (63.5 mm)
Finish Raw or Gloss black powder coat or Matte black powder coat or Wrinkle black powder coat or Polished