Phat Bars
Phat Bars Airbox – Isuzu D-MAX 4JJ3 (2020+)
Phat Bars Airbox – Isuzu D-MAX 4JJ3 (2020+)
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Phat Bars Airbox – Isuzu D-MAX 4JJ3 (2020+)
Direct Fit | Aussie-Made Quality | Off-Road Ready
OE Mounts | Water & Dust Resistant | Free Express Shipping
Product Overview
Purpose-built for the Isuzu D-MAX, this Phat Bars airbox bolts straight into factory mounts. Delivers better airflow and superior protection compared to OEM.
Vehicle Compatibility
- Isuzu D-MAX 3.0L 4JJ3 — 2020 onwards
Fits directly with factory hardware and rubber grommets.
Key Features
Build & Protection
- 2.5mm aluminium with satin black powder coat
- Clear Perspex lid for filter checks
- One-way drain valve to release water, block dust
Performance
- Enhanced induction efficiency & airflow
- Proven durability in Australian off-road conditions
Extras
- Includes off-road filter sock for dusty terrain
What’s Included
- Phat Bars Airbox assembly
- Perspex inspection lid
- Integrated one-way drain valve
- Off-road filter sock
- Reuses OEM mounting hardware
Install & Notes
- Factory mount bolt-in design; pro install recommended
- Check coupler sizing if paired with aftermarket snorkel
- Inspect seals after first use to ensure full seal
Payment & Shipping
- Afterpay, Zip, Humm, Klarna available
- Free Express Shipping Australia-Wide — ships in 1–2 weeks
FAQs
Does this fit the 2020-on D-MAX with the 4JJ3?
Do I need extra hardware?
Is it water-resistant?
Does it improve performance?
Common Rail Cowboys is not affiliated with Isuzu. Fitment is the buyer’s responsibility.

