MCR
4M41 +30 Nozzles - MCR
4M41 +30 Nozzles - MCR
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MCR +30 | Set of 4 | Mitsubishi 4M41 3.2L | Tune Required
A set of four MCR +30 performance nozzles for the Mitsubishi 4M41 3.2L. More fuel delivered inside the usable injection window, which means shorter pulse width, stronger mid-range torque and sharper response once the ECU is calibrated to suit.
Direct replacement nozzles for the standard Denso injectors. Tuning required, no exceptions.
Leave your rego and state, or VIN, before adding this item to cart so we can confirm the nozzle matches your injectors.
Vehicle Fitment
- Mitsubishi Pajero: 4M41 3.2L
- Mitsubishi Triton: 4M41 3.2L
May suit other 4M41 applications. VIN confirmation recommended before ordering.
What Is Included
- 4 x MCR +30 injector nozzles
Not included: injectors, seals or fitting kit.
Fitting Notes
Professional installation by a diesel injector specialist is strongly recommended. Correct shimming, flow testing and cleanliness are critical to performance and longevity. Estimated install time 2 to 5 hours depending on skill.
Minimum recommended tools
- Air compressor and blower
- 1/4 inch and 1/2 inch socket sets with extensions
- Accurate 1/4 inch and 1/2 inch torque wrenches
- 1/2 inch breaker bar
- Injector line spanners or crows foot
- Bench vice
- Scan tool with injector learn or relearn capability
Recommended consumables
- Brake and parts cleaner
- Clean engine oil or assembly lubricant
- Lint-free cloths
- Injector seat cleaning tools
- 4M41 injector fitting kit
ECU tuning is required after installation.
Tuning and Setup
- ECU remap required to correctly scale fuelling and rail pressure
- Injectors should be bench tested and shimmed after nozzle installation
- Perform injector learning or adaptation with a compatible scan tool
- Monitor EGTs and boost after the tune
Recommended Supporting Mods
- Front-mount or upgraded intercooler
- High-flow intake
- Quality 3 inch exhaust
- Accurate boost and EGT monitoring
Emissions-related modifications may be restricted for road use. Check local regulations.
Shipping and Payment
- Free express shipping Australia-wide
- Afterpay, Humm, Klarna and Zip available at checkout
Frequently Asked Questions
Do I need a tune after installing +30 nozzles?
Yes. ECU calibration is required to safely manage fuelling, rail pressure and EGTs.
Will they increase smoke?
With correct tuning and healthy injectors, smoke is well controlled and often reduced compared to untuned or mismatched setups.
What supporting mods are recommended?
Turbo upgrades, intercooling, exhaust upgrades and accurate monitoring are strongly recommended to take full advantage of the increased fuel delivery.
Do they fit my injectors?
They are a direct replacement nozzle for the standard Denso 4M41 injectors. Leave your rego and state or VIN and we will confirm before dispatch.
MCR +30. More Fuel In The Window.
Four nozzles, a proper tune, and the 4M41 gets the mid-range it always lacked. Leave your rego and state and we will confirm fitment.
Common Rail Cowboys is not affiliated with Mitsubishi Motors or Denso. MCR nozzles are supplied by Common Rail Cowboys as a modified performance fuel system component intended for off-road and motorsport use where permitted. Installation, bench testing and shimming must be carried out by a competent diesel injection specialist and an ECU tune is required after fitting. Confirming fitment is the buyer's responsibility. Modifications of this kind may affect manufacturer warranty, insurance and road compliance.
