• MCR 4JJ1 +30 injector nozzles for Isuzu pre-DPF engines, fuel injection parts with detailed nozzles in the image.
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MCR

4JJ1 +30 Injector Nozzles – MCR | Pre-DPF Isuzu

4JJ1 +30 Injector Nozzles – MCR | Pre-DPF Isuzu

$1,142.00 NZD
$1,142.00 NZD
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4JJ1 +30 Injector Nozzles – MCR (Pre-DPF Isuzu)

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These are injector nozzles only for Isuzu 4JJ1 pre-DPF engines. They are not complete injectors and must be installed into compatible Denso injector bodies.

Important: This listing is for injector nozzles only. If you are looking for complete 4JJ1 +30 injectors, view our injector assemblies instead.

Manufactured in Japan to tight tolerances, MCR +30 injector nozzles increase fuel delivery by approximately 30%, making them ideal for upgraded turbo and tuned 4JJ1 setups where additional fueling headroom is required.

🔧 Suits
  • Isuzu D-MAX 4JJ1 — 2007–2016 (Pre-DPF)
  • Holden Colorado RC 4JJ1 — 2008–2012
  • Holden Rodeo RA7 4JJ1 — 2007–2008

Compatible injector bodies: Denso 095000-6980 / 095000-8340

⚙ Key Features
  • +30% fuel flow increase over OEM
  • Injector nozzles only — not a complete injector
  • Supports high boost (~45 PSI with correct tuning)
  • Designed for pre-DPF 4JJ1 spray patterns
  • Japanese precision manufacturing
💡 Why Choose MCR Injector Nozzles?
  • Consistent, repeatable fuel delivery
  • Trusted by diesel tuners across Australia & Thailand
  • Ideal match for upgraded turbochargers
  • Maintains good idle and drivability when tuned correctly
🛠 Installation Notes
  • Professional installation strongly recommended
  • Injectors must be recalibrated and coded after fitment
  • New seals and seat washers required
  • ECU tuning mandatory after installation

Frequently Asked Questions

Are these complete injectors?
No. These are injector nozzles only and must be fitted to suitable Denso injector bodies.
Do I need tuning after installing these nozzles?
Yes. ECU calibration is required to safely utilise the additional fuel and control AFR and EGT.
Will these suit DPF 4JJ1 engines?
No. These nozzles are designed specifically for pre-DPF 4JJ1 engines only.
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