• Isuzu D-MAX – 4JJ1TCX 3.0L 4-Cylinder Turbo Diesel | 2012–2020
• Isuzu MU-X – 4JJ1TCX 3.0L 4-Cylinder Turbo Diesel | 2013–2020

✅ Engineered specifically for 2012–2020 D-MAX and 2013–2020 MU-X with 4JJ1TCX engine

How It Works: The TransChill cooler installs in-line with your transmission cooling system, providing superior heat dissipation to keep ATF temperatures under control. Whether towing, off-roading, or in stop-start traffic—this cooler protects your transmission from heat damage.

Key Features:

• 32mm, 14-row fin and plate core — built for high-efficiency cooling in compact size
• 50% more efficient — better heat transfer than basic tube and fin setups
• Drops ATF temps by up to 33°C under load
• Black powder-coated finish — resists rust and corrosion in harsh conditions
• Pressure tested to 150psi — no leaks, no compromises
• Pre-drilled mounting brackets — bolt-on install, no cutting or guesswork
• Reduces clutch wear and seal damage
• Extends transmission and ATF life

💡 Why This Matters: Transmission overheating kills performance and components fast. Heat is the #1 enemy of automatic transmissions. An 11°C temperature drop can double the life of your ATF and transmission internals. This cooler can drop temps by up to 33°C under load—dramatically extending gearbox life and preventing costly repairs.

Heat destroys transmissions. Every time you tow, climb hills, or sit in traffic, your transmission fluid heats up. Excessive heat breaks down ATF, accelerates clutch wear, and damages seals—leading to expensive failures.

Benefits:

• 💥 Prevents transmission overheating — especially when towing or off-roading
• ❄️ Drops ATF temps by up to 33°C under heavy load
• ⏱ An 11°C drop can double transmission life — proven by fluid manufacturers
• 🛡️ Reduces clutch wear and seal damage from heat breakdown
• 💰 Extends ATF life — fewer fluid changes needed
• 🚛 Essential for towing — keeps temps safe under maximum load

💡 The Science: For every 10°C increase in transmission temperature above normal operating range, ATF life is cut in half. By keeping temps down, this cooler can literally double (or triple) the life of your transmission fluid and internal components. It's cheap insurance for an expensive component.

Cooler Core:

• Type: 32mm fin and plate design
• Configuration: 14-row core
• Efficiency: 50% more efficient than tube and fin coolers
• Finish: Black powder-coated for corrosion resistance
• Pressure Rating: Tested to 150psi
• Brand: Davies Craig (Australian-made quality)

Performance:

• Temperature Reduction: Up to 33°C under load
• Optimal for towing, off-road, and heavy-duty use
• Designed for 4JJ1TCX transmission specifications

Mounting & Fittings:

• Brackets: Laser-cut 4mm 5005-H34 alloy
• Hose: 400psi rated, SAE J1019 compliant ATF hose
• Installation: Pre-drilled bolt-on mounting (no cutting required)

• 32mm 14-Row Davies Craig Transmission Cooler (Black Edition)
• Laser-cut 4mm 5005-H34 alloy mounting brackets
• 400psi rated ATF hose (SAE J1019 compliant)
• All mounting hardware (bolts, washers, nuts)
• Hose clamps and fittings
• Installation guide

✅ Complete bolt-on kit — everything needed for installation included

Recommended: Competent qualified mechanic or experienced DIYer

DIY Time: 2–3 hours

Installation Notes:

• Mounts in front of radiator for maximum airflow
• Pre-drilled mounting brackets — no cutting or fabrication required
• Plumbs in-line with transmission cooling lines
• Laser-cut brackets designed specifically for D-MAX/MU-X
• All fittings and hoses included

Important: Installation requires working with transmission fluid lines. If not comfortable with this type of work, professional installation is recommended. Detailed installation guide included with kit.

Maintenance Schedule:

• Visual inspection during regular services
• Check for leaks at fittings and connections
• Inspect cooler for physical damage (rock strikes, debris)
• Clean cooler fins if blocked by mud or debris
• Check ATF level regularly (especially after installation)

💡 Pro Tip: The powder-coated finish is tough, but if you frequently drive in mud or water, occasionally rinse the cooler core with a gentle stream to prevent debris buildup. This ensures maximum airflow and cooling efficiency—especially important for heavy towing.

Q: Will this void my Isuzu warranty?

A: No. Aftermarket transmission coolers don't void warranty under Australian Consumer Law. They're a common upgrade for vehicles used for towing or heavy-duty work.

Q: Do I really need a transmission cooler?

A: If you tow, drive in hilly terrain, do a lot of off-roading, or drive in hot climates—absolutely. Even if you don't, a transmission cooler extends ATF and transmission life significantly. It's cheap insurance for an expensive component.

Q: How much cooler will my transmission run?

A: This cooler can drop ATF temperatures by up to 33°C under heavy load (towing, hills, etc.). Even moderate reductions of 10-15°C make a huge difference to transmission longevity.

Q: Why is an 11°C drop so important?

A: Transmission fluid manufacturers state that for every 10°C increase above optimal temperature, ATF life is cut in half. Conversely, dropping temps by 11°C can double the life of your fluid and transmission components. This is proven science, not marketing.

Q: What makes fin and plate coolers better than tube and fin?

A: Fin and plate design has 50% more surface area for heat transfer in the same size package. This means better cooling efficiency in a more compact unit—perfect for fitting in tight engine bays.

Q: Can I install this myself?

A: If you're mechanically competent and comfortable working with transmission lines, yes. The kit is bolt-on with pre-drilled brackets. Most DIYers complete installation in 2-3 hours. Otherwise, any qualified mechanic can handle it.

Q: Will this fit with my bull bar or other accessories?

A: The cooler is designed to mount in front of the radiator. Most aftermarket accessories don't interfere, but if you have a particularly complex setup, verify clearances. The compact 32mm design helps with fitment.

Q: Do I need to change my ATF after installation?

A: Not necessarily, but you will lose some fluid during installation when disconnecting lines. Top up to the correct level after installation. This is a good opportunity to do a fluid change if you're due, but it's not required.

Q: What's the black powder coating for?

A: It provides excellent corrosion resistance—especially important in Australian conditions with mud, water, salt, and harsh weather. It also looks professional and resists rock chips better than bare aluminum.

Q: Why is 150psi pressure testing important?

A: Transmission systems operate at high pressures. A 150psi pressure test ensures no leaks under normal or extreme operating conditions. Davies Craig quality means reliability you can trust.

Q: Does this work with both manual and automatic transmissions?

A: This kit is designed for automatic transmissions (which have fluid cooling systems). Manual transmissions don't typically use fluid coolers.

Q: Is this suitable for extreme towing?

A: Absolutely. This is exactly what transmission coolers are designed for. If you regularly tow at or near your vehicle's capacity, a transmission cooler is essential protection. Many commercial operators consider them mandatory equipment.

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