4JJ3 Bolt-On Intercooler Upgrade 2020+ Dmax/BT50 | FLEX

4JJ3 FLEX Monoblock Bolt-On Performance Intercooler

Upgrade the cooling performance of your 4JJ3 with the FLEX Monoblock Bolt-On Performance Intercooler, designed specifically for the Isuzu D-MAX, MU-X and Mazda BT-50 4JJ3 platforms.

Designed as a direct bolt-on replacement, this intercooler fits into the factory location with no fabrication required, making it an ideal upgrade for both tuned vehicles and those regularly subjected to towing, touring or demanding driving conditions.

Key Features

• Direct bolt-on fitment – Designed to install into the factory intercooler location with no fabrication required.
• One-piece monoblock construction – Manufactured without welded joins for increased strength and reduced potential for leaks.
• Rated up to 80 PSI boost pressure – Built to handle high-boost and performance applications.
• Improved cooling efficiency – Helps reduce intake air temperatures and minimise heat soak for more consistent performance.
• Built for demanding applications – Ideal for performance builds, towing, touring and vehicles operating under increased load.

Specifications

Brand: FLEX
Core Size: 620 × 252 × 63.5 mm
Construction: One-piece monoblock
Maximum Boost Pressure: 80 PSI

Vehicle Fitment

• Isuzu D-MAX 2020+ – RG Series, 4JJ3
• Isuzu MU-X 2021+ – RG Series, 4JJ3
• Mazda BT-50 2020+ – TF Series, 4JJ3, pre-facelift

Whether you're chasing improved cooling for a tuned setup or simply want a stronger, more efficient replacement for the factory intercooler, the FLEX Monoblock Bolt-On Intercooler provides a reliable, heavy-duty solution for the 4JJ3 platform.