Maximise the power and efficiency of your 4JJ3 engine with MCR +30 Nozzles – engineered for serious diesel performance. Manufactured in Japan and backed by MCR Thailand, these nozzles deliver reliable fuel flow and consistent results for tuned D-MAX, MU-X and BT-50 builds running stock or upgraded turbos.

• 🔧 Direct upgrade for 4JJ3 DPF engines – purpose-made fitment
• ⚙️ +30% fuel flow increase – more fuel for more power (with tuning)
• 🚀 Supports up to ~40–50 PSI boost (with upgraded pump) – ideal with F44 & F55 turbos
• 🛠️ Premium Japanese build quality – precise and durable under load

• Isuzu D-MAX – 4JJ3 (DPF)
• Isuzu MU-X – 4JJ3 (DPF)
• Mazda BT-50 – 4JJ3 (DPF)

Note: Tuning is required. DPF delete and other supporting mods may also be needed depending on your setup and local regulations.

• Professional install recommended: Have a diesel injector specialist fit, flow-test and shim the injectors after nozzle install.
• ECU remap required: To calibrate fuel delivery, manage EGTs and realise gains.
• Supporting mods: Intercooler, intake/exhaust and turbo upgrades (e.g., F44/F55) may be required for target power.
• Compliance: Ensure any emissions-related changes comply with local laws; off-road/competition use where applicable.
• Side note: These injector nozzles will behave extremely similar to stock without added rail pressure.

• 💳 Afterpay, Humm, Klarna & Zip available
• ✈️ Free Express Shipping Australia-Wide — fast, trackable dispatch (usually same or next business day if in stock. If out of stock expect 1.5–3 week wait – message us if you need this urgently; this item is usually in stock.)