DieselGeeks – AustraliaShopIsuzu Dmax & Mux 4JJ14JJ1 Pre DPF High Flow Nozzle Kit for Isuzu Diesel Engines
  • Description
  • Fitment
  • Additional Information

Product Description

4JJ1 Pre DPF High Flow Nozzle Kit includes one High Flow Nozzle Kit designed specifically for Isuzu 4JJ1 Pre DPF diesel engines.
Engineered for enhanced fuel delivery and atomisation, this upgrade improves throttle response, power output, and overall engine performance—making it ideal for tuned or modified applications.

Each nozzle is precision-machined to OEM-level tolerances, ensuring a perfect spray pattern and reliable performance. The kit is a direct-fit replacement compatible with factory injector bodies and includes all required hardware for installation.

Professional installation and injector calibration are recommended. Not suitable for DPF-equipped engines.

Kit Contents

  • 4x High Flow Nozzles (with test results & matching codes)
  • 4x Cap Nut Bolts
  • 4x Injector Hold Down Bolts
  • 4x Washers & O-Rings
  • Complete washer, clip, and seal set for installation

Note: Supplied as a full set for 4JJ1 Pre DPF engines.

Alternative Part Numbers

N/A – Performance upgrade component (verify compatibility before installation)

Fitment Information

Make: Isuzu
Models: D-Max, MU-X, N-Series (selected models)
Engine Code: 4JJ1 (Pre DPF only)
Fuel Type: Diesel
Fuel System: Common Rail
Year Range: 2007 to 2016 (verify by VIN or engine type)

Additional Information

No additional information available for this product.

Customer reviews

(11 customer reviews)
4.27 out of 5 Stars
5 Stars
5
4 Stars
4
3 Stars
2
2 Stars
0
1 Star
0
Write a review

11 reviews for 4JJ1 Pre DPF High Flow Nozzle Kit for Isuzu Diesel Engines

  1. Sam Hughes (WA) –

    Good enough for the price. Postage was fast.

  2. Trent S. (VIC) –

    Good quality, fair price. Cheaper than a full injector and did the job. Shipping was quick.

  3. Emma W. (NSW) –

    All good, thanks.

  4. Jake Wilson (NT) –

    All good, just took a little while to turn up.

  5. Ryan Ward (NT) –

    Great price, quick to arrive. Smoke has cleared up since fitting these.

  6. Les W. (NSW) –

    Good value for money. Smoke has cleared up since fitting these.

  7. Sarah F. (NSW) –

    Good part, does the job. Smoke has cleared up since fitting these on my 4JJ1.

  8. Peter Young (SA) –

    Works as expected. Smoke has cleared up since fitting these on my 4JJ1.

  9. Adam Campbell (QLD) –

    Does the job, nothing special.

  10. Tony Campbell (WA) –

    Genuine part, happy with it. Cheaper than a full injector and did the job.

  11. Hayden Watson (VIC) –

    Took a bit longer to arrive than expected but works fine. Turned up quicker than I expected.

Add a review

Your email address will not be published. Required fields are marked *