• Direction Plus D-Max & BT-50 transmission cooler TCB646DPK for 2021-on models, durable cooling system for vehicle transmission.
  • Direction Plus D-Max and BT-50 transmission cooler kit, model TCB646DPK, showing the compact, high-performance transmission cooler system.
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Direction Plus

D-Max & BT-50 Trans Cooler - 4JJ3 - 2021-On - TCB646DPK

D-Max & BT-50 Trans Cooler - 4JJ3 - 2021-On - TCB646DPK

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$636.50 AUD
$661.00 AUD $636.50 AUD
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D-Max & BT-50 Trans Cooler - 4JJ3 - 2021-On - TCB646DPK

Davies Craig TransChill Up to 33°C Cooler ATF 4JJ3-TCX Specific Free Express AU Shipping

Keep It Cool. Keep It Alive.

The Davies Craig TransChill TCB646DPK is purpose-built for Isuzu D-MAX and Mazda BT-50 fitted with the 4JJ3-TCX engine (2020+).

Designed to reduce automatic transmission fluid temperatures by up to 33°C, this kit protects your gearbox during towing, touring, off-road driving and high ambient temperatures. It’s not just a cooler — it’s long-term insurance for your transmission.

🔧 Why You Need a Trans Cooler
  • 🔥 Reduces ATF temps by up to 33°C under load
  • 🧠 Extends transmission life — every ~11°C drop can double ATF lifespan
  • ⚙️ Improves shift consistency when towing or off-road
  • 💸 Prevents costly gearbox repairs caused by heat breakdown
💪 Built Tough for Aussie Conditions
  • 32mm 14-row plate & fin core — compact & highly efficient
  • Arctic Black powder-coated finish — corrosion resistant
  • Pressure tested to 150 PSI for reliability under load
  • 50%+ greater thermal efficiency vs tube-and-fin coolers
📦 What’s Included

  • New & Improved model

  • Designed and engineered in Australia

  • 32mm, 14 row fin & plate design allows for extreme cooling

  • Durable Black powder coat resists oxidisation

  • 100% pressure tested at 150psi for quality assurance

  • Internal tubulation for efficient heat transfer

  • Up to 50% more efficient (*heat transfer rate – BTU/hr)

  • Pre-drilled mounting plates for easy installation

  • Inlet & Outlet size: M16 fittings

✅ Vehicle Compatibility
  • Isuzu D-MAX 4JJ3-TCX — 2021+ (Automatic)
  • Isuzu MU-X 4JJ3-TCX — 2021+ (Automatic)
  • Mazda BT-50 4JJ3-TCX — 2021+ (Automatic)
⚙️ Technical Specifications
  • Cooler Thickness: 32mm
  • Inlet / Outlet: M16
  • Warranty: 3-Year manufacturer warranty (Davies Craig)
💳 Payment & 🚚 Shipping
  • 💳 Afterpay, Humm, Klarna & Zip available
  • 🚀 Free Express Shipping Australia-Wide
  • 📦 Fast, trackable dispatch from our Australian warehouse

🛠️ Don’t wait for heat damage to show up.
👉 Add to Cart and keep your D-MAX or BT-50 transmission running cool, smooth, and reliable.

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