• 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 +50 Nozzles - MCR - DPF Model

4JJ1 +50 Nozzles - MCR - DPF Model

$1,155.00 NZD
$1,155.00 NZD
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4JJ1 DPF +50 Nozzle – M-BLUEPOWER (MCR Japan)

 

🚚 Free Express AU 💳 Afterpay • Humm • Klarna • Zip ⚡ Performance Nozzles

 

High-flow M-BLUEPOWER +50 nozzles for 4JJ1 DPF engines. Japanese-engineered by MCR for builds chasing clean fuel delivery, stable EGTs and reliable gains with correct tuning.

🧩 Overview

These +50% flow nozzles are built for late-model 4JJ1 DPF platforms needing more headroom for towing, off-road torque or high-output turbo builds. Precision machining gives tight spray patterns and stable return rates under high load.

🔧 Suits / Compatibility
  • Isuzu D-MAX 4JJ1 (DPF)
  • Isuzu MU-X 4JJ1 (DPF)

Suitable for both DPF-fitted and DPF-deleted setups* with the correct tune.

✨ Features
  • +50% fuel delivery capacity (with correct calibration)
  • Japanese MCR M-BLUEPOWER machining & QC
  • Supports ~50 PSI boost — stock or upgraded turbo
  • Improves fuelling headroom for torque & top-end power
  • Ideal for towing, off-road and performance applications
📦 What’s Included
  • 1 × set of M-BLUEPOWER +50 high-flow nozzles

Injectors must be disassembled, shimmed and flow-matched by a diesel specialist during install.

🛠 Install Notes
  • Requires injector disassembly and setup by a diesel specialist
  • ECU remap required to scale fuel, rail pressure and timing
  • Intercooler, intake, exhaust and turbo upgrades often needed
  • Monitor AFR and EGT on first tune session
⚠ Important Notes
  • High-flow performance part — NOT a stock replacement nozzle
  • DPF systems may restrict ultimate output; consult your tuner
  • *Emissions laws vary — off-road/competition use where permitted
💳 Payment & 🚚 Shipping
  • Afterpay, Humm, Klarna & Zip available
  • Free Express Shipping Australia-Wide — same/next-day dispatch when in stock
  • Back-order lead time: typically 1.5–3 weeks

❓ FAQs

Will these nozzles work with the DPF still fitted?
Yes. They suit DPF-equipped engines, but correct tuning is essential to manage EGT and fuel delivery.
How much extra fuel flow do they add?
They provide approximately up to +50% flow compared to stock, giving the headroom needed for bigger turbo setups.
What supporting mods do I need?
An upgraded turbo, intercooler, exhaust and a professional ECU remap are strongly recommended to safely use the extra flow.
Are these genuine MCR M-BLUEPOWER nozzles?
Yes — manufactured in Japan under MCR’s strict quality control standards.
Can I fit these myself?
Yes, however, nozzle fitting can require injector disassembly, shimming and calibration — best practice is to use a diesel specialist.
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