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4JJ3 Bolt-On Intercooler – FLEX Monoblock Bolt-On Performance Intercooler
Step up your cooling performance with the FLEX Monoblock Bolt-On Intercooler, engineered specifically for 4JJ3-powered builds. Designed as a direct-fit upgrade for 2020+ Isuzu D-MAX, 2021+ MU-X, and 2020+ Mazda BT-50 (pre-facelift), this heavy-duty intercooler is built to deliver maximum reliability and efficiency in demanding conditions.
Key Features:
Direct bolt-on fitment – installs into factory location, no fabrication required
One-piece monoblock casting – stronger, leak-free design with no welds
Handles up to 80 PSI of boost – ideal for tuned or heavy-use applications
Improved charge cooling – lowers intake temperatures and reduces heat soak
Specifications:
Brand: FLEX
Core size: 620 × 252 × 63.5 mm
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)
The FLEX Monoblock Bolt-On Performance Intercooler is the ultimate cooling upgrade for 4JJ3 platforms, delivering strength, efficiency, and reliability for serious performance builds.
Original price was: $2,887.50.$2,598.75Current price is: $2,598.75.
Price range: $800.00 through $980.00
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Original price was: $4,628.00.$4,165.20Current price is: $4,165.20.
Price range: $800.00 through $980.00
