Audi

Best Intercooler Brick Upgrades for Audi 3.0T Supercharged

If you’re driving a supercharged Audi 3.0T — whether it’s an A6, A7, S4, or S5 from 2010 to 2018 — and…

If you’re driving a supercharged Audi 3.0T — whether it’s an A6, A7, S4, or S5 from 2010 to 2018 — and you’re running a tune, pulley upgrade, or anything more aggressive than stock, you’ve probably noticed something frustrating: your car feels fast at first, then slower after a few hard pulls. That’s heat soak. And the real culprit might not be what you think.

While many owners upgrade the intake, pulleys, exhaust, and even the front-mounted heat exchanger, they completely overlook a critical part hidden inside the intake manifold — the intercooler bricks.

These water-to-air intercooler cores are responsible for cooling the compressed air after it leaves the supercharger. When they’re undersized, worn out, or clogged, they become the weak link in your cooling system, causing inconsistent power, high intake temps, and reduced engine performance.

This guide breaks down why upgrading the intercooler bricks on your Audi 3.0T is one of the most underrated but essential mods — especially on dual pulley or stage 2+ setups. We’ll cover what they are, how they work, what happens when they fail, and the best options for replacing or upgrading them.

🧠 What Are Intercooler Bricks in the Audi 3.0T?

The Audi 3.0T uses a TVS1320 supercharger mounted directly on top of the engine. Compressed air from the supercharger is extremely hot — often over 300°F. To cool it before entering the combustion chamber, Audi designed a compact water-to-air intercooler system.

Inside the intake manifold are two small rectangular water-cooled heat exchangers — commonly referred to as “intercooler bricks.” These sit directly beneath the supercharger rotors and are constantly exposed to incoming hot air.

Coolant flows through the bricks, pulling heat away from the compressed air. That coolant is then pumped through the system (via the supercharger coolant pump) to the front-mounted heat exchanger, where it cools back down and recirculates.

The bricks are the first and most important point of contact for cooling your intake charge. If they’re overwhelmed, no pump or external heat exchanger can save you.

⚠️ Why the OEM Bricks Aren’t Enough

From the factory, these intercooler bricks are designed to handle the heat load of a stock 3.0T setup — about 333 hp in A6/A7 and 333–354 hp in the S4/S5. But once you start modifying:

  • Dual pulley setups push boost over 17–20 psi
  • Tunes increase air density and temperature
  • Repeated pulls build more heat than the bricks can manage

The stock bricks have multiple weaknesses:

  • Thin internal core design
  • Limited surface area for cooling
  • Plastic end tanks that degrade over time
  • Low coolant capacity
  • Easily clogged with debris or corrosion after years of use

Even worse, they’re hard to monitor. You don’t see them. You don’t check them. So most owners only realize there’s a problem when they feel timing get pulled or see IATs spike to unsafe levels.

🔥 Benefits of Upgrading Intercooler Bricks

Swapping to upgraded bricks is one of the most effective ways to reduce intake temps, prevent heat soak, and let your other mods (intake, tune, pulleys) actually work the way they’re supposed to.

Here’s what upgraded bricks provide:

  • ✅ Increased surface area for heat transfer
  • ✅ Faster cooling of supercharged air
  • ✅ Reduced chance of heat soak
  • ✅ Better timing retention on long pulls
  • ✅ Safer IATs during hot weather or track use
  • ✅ Greater consistency in real-world driving

And since they sit at the heart of your cooling system, their impact multiplies when paired with:

  • High-flow coolant pumps
  • Larger heat exchangers
  • Upgraded coolant tanks
  • High-temp coolant

They’re a hidden horsepower mod — because they don’t add power directly, but preserve the power you already have.

🏆 Best Intercooler Brick Upgrade Options

Here are the top proven options for upgrading your Audi 3.0T’s intercooler bricks:

1. JHM Upgraded Intercooler Bricks

These are the current gold standard. They’re built for dual pulley, E40, and race gas setups. If you want to cool like an RS car, this is the move.

2. DIY Brick Core Upgrades

If you’re hands-on and have tools, you can modify the stock housing and drop in a better core. Great bang-for-buck, but not plug-and-play.

3. OEM Replacement Bricks

If your stock bricks are leaking, cracked, or full of corrosion, these are a temporary fix — not a performance upgrade.

4. Custom Billet Bricks

  • ✅ Made from CNC’d aluminum or copper
  • ✅ Extreme pressure and heat resistance
  • ✅ Perfect for track builds
  • ⚠️ Very expensive and limited availability
  • 💰 Price: $$$$
  • 🔗 [Contact custom fab shops]

If you’re building a full race 3.0T, go custom. But for most street setups, JHM or DIY cores will do the job for half the cost.

🛠️ Installation Tips

Time:

4–6 hours DIY / 2–3 hours shop time
Supercharger must be removed.

Tools Needed:

  • Torque wrench
  • Gasket scraper
  • Coolant drain pan
  • RTV or new gaskets
  • Intake manifold tools

Install Tips:

  • Drain the supercharger cooling system fully
  • Disconnect fuel rails and intake components
  • Carefully lift the supercharger out of the engine bay
  • Swap bricks with fresh seals and torque evenly
  • Bleed coolant system properly
  • Monitor IATs afterward to verify performance

This isn’t a beginner mod — but it’s 100% doable for DIYers with moderate experience.

📉 What Happens If You Don’t Upgrade?

When you push tuned power through stock intercooler bricks:

  • Your IATs spike fast
  • Power drops off mid-pull
  • ECU pulls timing, reducing horsepower
  • Overheating bricks break down and start leaking
  • Eventually, you’ll lose power permanently from consistent heat damage

You don’t want to be that guy at the meet wondering why your dual pulley S4 feels slower than stock. Heat kills power. Bad bricks make it worse.

🔗 Perfect Mods to Pair With

Max out your brick performance by pairing them with:

  • ✅ High-Flow Supercharger Coolant Pump
  • ✅ Upgraded Heat Exchanger (CR Racing, 034)
  • ✅ Coolant Expansion Tank
  • ✅ Thermally-efficient coolant (like Engine Ice)
  • ✅ Catch Can (keeps brick surfaces cleaner internally)

These support systems help bricks stay cool longer and recover faster.

💬 Real Feedback From 3.0T Owners

  • “Night and day. IATs used to climb past 150°F after 2 pulls. Now I’m at 115°F max.”
  • “Car feels alive again. I forgot how strong Stage 2 was supposed to feel.”
  • “Best mod I’ve done after dual pulley. No more power fade, even on hot days.”
  • “Throttle stays sharp. No timing pull. Feels like a new car.”

🧼 Final Thoughts

If you’re pushing power through a supercharged 3.0T and haven’t upgraded your intercooler bricks — you’re leaving horsepower on the table. Worse, you’re letting heat slowly choke your build.

This isn’t a flashy mod. You won’t see it on Instagram. But it makes every pull feel just as good as the last. And when combined with a proper heat exchanger and high-flow pump, it turns your Audi into a heat-proof weapon — ready for summer, canyons, and back-to-back abuse.

Protect your power. Upgrade your bricks.

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