Quick check: the code on top of your injector starts with A9. A 9F code is the 2017 to 2020 DPF 4JJ1 and takes 295050-2420 and the 4JJ1 DPF +50 nozzles. 72 (2012 to 2016) and 5F (2006 to 2012) are pre-DPF 4JJ1 and take the 4JJ1 +30 pre-DPF nozzles. None of those are this part.

Not sure? Add your VIN or State and Rego to the order notes and we will confirm before dispatch.

• 4 x MCR Performance +30% nozzles for the 4JJ3 Denso 295700-1060 injector

Nozzles only. Not complete injectors. Seat washers, seals and injector bodies are not included.

Nozzles if your injectors are healthy, you have a bench or a workshop with one, and you want the cheapest way to +30. The nozzle swap needs the injector stripped, the nozzle fitted, the set flow matched and leak-off checked, then reassembled. It is not a driveway job.

Complete injectors if your set is tired, you want a matched set built and tested on our Hartridge, or you want it done once: 4JJ3 +30 Injectors on brand new genuine Denso bodies.

We can fit them for you. Send your injectors in and we will fit the nozzles, match the set and return them with a bench report. Message us for pricing.

Standard replacements instead? See the genuine Denso 4JJ3 set.

MCR size their nozzles by boost pressure, not by a flow percentage. Flow percentages depend on the bench, the test plan and the rail pressure, so two shops will never agree on a number. Boost is a real figure you can state. MCR's band for the Blue Power 3.0 on the 4JJ3 is 35 to 50 psi.

• Factory turbo: yes, with a tune. The remap sets how much of the extra fuel gets used, so a stock turbo build runs a conservative map and still picks up torque, with headroom for a turbo later.
• Turbo upgrade: where the nozzles earn their keep. The SAK 44mm and FLEX F55 both bolt to the 4JJ3.
• Rail pressure: without a tune that lifts rail pressure these nozzles behave close to stock. The gain is in the calibration, not the part on its own.
• DPF fitted: the nozzles work with the DPF in place and a tune to suit. The DPF will limit what the combination can ultimately make. Any change to emissions equipment must comply with the laws that apply to your vehicle and its use.

• Fit on a common rail bench. Strip the injector, fit the nozzle, check shim stack and needle lift, flow test and leak-off test, match the set.
• Refit with new seat washers. See the genuine 4JJ3 injector seat washer set.
• The existing A9 compensation code on the body stays valid after a nozzle change. Enter it as normal and run the injector learn.
• ECU remap required. The factory map does not know the nozzle changed.
• Clean-room practice. One speck of grit is enough to stick a needle.

MCR is the Thai performance nozzle house behind every modified injector set we build. Consistent hole geometry from set to set means a tuner can hit the same map on the next truck. These are the same nozzles we fit to our own sets.

Usually in stock and shipping same or next business day. If we are waiting on a shipment from MCR, allow 1.5 to 3 weeks and we will confirm an ETA. On a deadline? Message us before ordering.

• Free express shipping Australia wide. Full tracking included.
• Buy now, pay later. Afterpay, Humm, Klarna and Zip.
• International shipping available. Message us for a quote.

These are modified performance nozzles, not a standard replacement part. Flow percentages are nominal and vary with rail pressure, pulse width and test bench. Fitting them changes the flow characteristics of the injector from original OEM specification.

Any change to emissions equipment or calibration must comply with the laws that apply to your vehicle and its use. Off-road and competition use where permitted.

It is the customer's responsibility to verify injector compatibility before fitting.

Q: Are these complete injectors?

A: No. Nozzles only. They must be fitted to Denso 295700-1060 bodies on a common rail bench.

Q: Do I need a tune?

A: Yes. An ECU remap is essential to use the extra fuel and keep smoke and EGTs under control. Without a tune that lifts rail pressure these nozzles behave close to stock.

Q: Will these work on the stock turbo?

A: Yes, with a tune written for it. They come into their own behind a SAK 44mm or FLEX F55.

Q: Will the compensation codes change?

A: No. A nozzle change does not generate new codes. Re-enter the A9 code on the body after refit and run the injector learn.

Q: Will these fit a 4JJ1?

A: No. The 4JJ1 uses different injectors and different nozzles. See the 4JJ1 pre-DPF +30 and DPF +50 nozzle sets.

Q: Can I fit them myself?

A: Only if you have a common rail test bench. Otherwise send the injectors to us or a diesel shop with one.