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High Performance Diesel

Isuzu D-MAX / MU-X 3.0L 4JJ3 & Mazda BT-50 Intercooler Upgrade | 2020+ Models

Isuzu D-MAX / MU-X 3.0L 4JJ3 & Mazda BT-50 Intercooler Upgrade | 2020+ Models

$2,134.16 AUD
$2,134.16 AUD
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HPD Front Mount Intercooler Kit – Isuzu D-MAX / MU-X 4JJ3 & Mazda BT-50 (2020+)

Massive Cooling Gains. Bolt-On Power. Built Aussie Tough.

✅ Cooler Intake Temps | ✅ Increased Torque & Reliability | ✅ Ideal for Towing & Touring | ✅ 1-Year Warranty

🧩 Product Overview

Level up your 3.0L 4JJ3 with HPD’s IK-DM4-F Front Mount Intercooler Kit. Designed to outperform the factory unit, this kit delivers cooler, more consistent power and long-term reliability—whether you’re towing, touring, or tackling steep climbs.

Direct bolt-on fitment – no cutting or permanent modifications required.

🔧 Suits
  • Isuzu D-MAX 3.0L 4JJ3 – 2020+
  • Isuzu MU-X 3.0L 4JJ3 – 2020+
  • Mazda BT-50 3.0L – 2020+
📊 Back-to-Back Dyno Results

After seven consecutive full-power dyno runs, the HPD intercooler held a cold-side temp of ~40 °C, vs 65–70 °C on the factory unit.

Temperature Point OEM Intercooler HPD Intercooler
Hot Side Temp 120–140 °C 125–140 °C
Cold Side Temp 65–70 °C ~40 °C

🔥 25–30 °C lower intake temps under sustained load → more power, lower EGTs & reduced heat soak.

Figures are indicative and vary with ambient temps, tune, load and test conditions.

📐 Size & Construction
  • Core size: 600 mm × 300 mm × 76 mm (near 2× OEM volume)
  • Core type: Bar & Plate – superior heat dissipation & durability
  • End tanks: Cast alloy, high-flow
  • Piping: Full 2.5″ mandrel-bent (vs 2″ OEM)
  • MAP boss: CNC-machined for accurate sensor fitment
  • Mounts: 10 mm CNC “knuckle duster” brackets for rigidity
  • Hoses & clamps: Premium silicone + load-rated clamps
  • Built in Australia by HPD
📦 What’s Included
  • HPD Front Mount Intercooler (600×300×76 mm)
  • Complete 2.5″ piping kit
  • Cast alloy end tanks
  • Mounting brackets & hardware
  • Silicone joiners & clamps
  • CNC MAP sensor boss
  • Fitting instructions
  • 12-month warranty
🔥 Optional Transmission Cooler Kit

For serious towing, pair with HPD’s bolt-in transmission cooler — designed to complement this intercooler.

👉 Isuzu Dmax / MU-X / BT50 2021+ Trans Cooler Kit - HPD

🛠️ Install & Notes
  • Direct bolt-in to factory locations; no cutting required
  • Recheck clamp torque after first heat cycle
  • Tuning not required, but the cooler supports higher, more consistent power
  • Ideal for towing, hot climates, and tuned setups
💳 Payment & 🚚 Shipping
  • Buy now, pay later with Humm, Klarna & Zip
  • Free Express Shipping Australia-Wide – built to order, typically ships within 1–2 weeks

Frequently Asked Questions

Is this a direct bolt-on for 2020+ 4JJ3 models?
Yes — the kit mounts to factory points and includes piping, brackets and hardware for a bolt-on install.
Do I need a tune after fitting the intercooler?
No tune is required for stock vehicles. A calibration can unlock additional benefit by optimising fueling and boost for the lower IATs.
How much cooler will intake temps be?
In back-to-back dyno testing, cold-side temps held around ~40 °C after seven pulls, compared with 65–70 °C on the OEM cooler. Real-world results vary.
Will this help with towing and heat soak?
Yes — the larger bar & plate core resists heat soak and helps maintain torque on long pulls, reducing EGTs and intake temps.
Is it compatible with bull bars and winches?
Most setups fit without modification. Extremely large bars/winches that block airflow may require ducting or shroud adjustments.

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