Direction Plus
4JJ1 D-Max / MU-X Catch Can kit (2012-2020) - PV644DPK
4JJ1 D-Max / MU-X Catch Can kit (2012-2020) - PV644DPK
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Isuzu 4JJ1-TC and 4JJ1-TCX 3.0L | D-Max and MU-X | 98% Oil Separation
The Direction Plus ProVent Ultimate Catch Can Kit PV644DPK for the 4JJ1 D-Max and MU-X. Strips the oil out of crankcase blow-by before it hits the intake, turbo and intercooler.
The 4JJ1 is a workhorse, but it runs EGR. Oil mist plus EGR soot builds sludge in the manifold and on the valves. Stop the oil and you stop the sludge.
Vehicle Fitment
- Isuzu D-Max 4JJ1-TC 3.0L 4cyl, 2012 to 2017
- Isuzu D-Max 4JJ1-TCX 3.0L 4cyl, 2012 to 2020
- Isuzu MU-X 4JJ1-TC 3.0L 4cyl, 2013 to 2017
- Isuzu MU-X 4JJ1-TCX 3.0L 4cyl, 2017 to 2020
2020-on 4JJ3? Use the PV645DPK kit. Pre-2012 4JJ1 D-Max? Direction Plus lists the universal PV201DPK for those.
Fitment per Direction Plus as of October 2026. Check the fitment guide or send us your VIN if unsure.
What Is Included
- MANN+HUMMEL ProVent catch can
- 4JJ1-specific mounting bracket
- Complete hose and fitting kit
- Drain tap assembly with hose
- Optional sump return line components
- Mounting hardware (bolts, washers, nuts)
- Spring clamps and cable ties
- Installation guide
How It Works
The ProVent separates oil mist from crankcase blow-by gas before it goes back into the intake. Clean air carries on to the engine. The captured oil is drained from the can, or returned to the sump if you set up the optional return line.
Key Features
- 98% oil separation efficiency
- Stops oil and soot entering the clean air intake
- Protects the turbocharger and intercooler
- Integrated crankcase pressure regulation
- Reduces exhaust smoke and odours
- Minimises oil consumption (where the oil is returned to the sump)
- MANN+HUMMEL filtration media
- Drain tap for oil collection, optional return line to sump
Fitting Notes and Servicing
- Recommended: competent qualified mechanic or experienced DIYer. Allow roughly 2 to 3 hours.
- Mounts in the engine bay and connects to the 4JJ1 crankcase ventilation system.
- Check the collected oil level every 5,000 to 10,000 km and drain as needed.
- Replace the filter element around every 40,000 km (replacement elements available).
- Inspect hoses and connections during regular services.
Recommended Add-Ons
Want fuel protection in the same job? The PreLine-Plus pre-filter and catch can kits with in-cab alarm are listed for the D-Max 2012 to 2020 and the MU-X 2013 to 2020.
Shipping and Payment
- Free express shipping Australia-wide, tracking on every order.
- Afterpay, Humm, Klarna and Zip available at checkout.
- Returns and warranty are handled under our refund policy.
Frequently Asked Questions
Q: Does one kit cover both 4JJ1-TC and 4JJ1-TCX?
A: Yes. Direction Plus lists the PV644DPK for both, in the D-Max and the MU-X, across the years shown in Vehicle Fitment.
Q: I have a 2021 D-Max. Will it fit?
A: If it is the 4JJ3, no. Use the PV645DPK. Send us your VIN if unsure.
Q: Does fitting a catch can void my warranty?
A: Fitting a quality aftermarket part does not of itself void a new-vehicle warranty under Australian Consumer Law. See the AAAA guidance. Direction Plus states this kit does not void vehicle warranties.
Q: Does the oil return to the sump?
A: Your choice. Collect it in the can and drain it periodically, or set up the optional return line to the sump.
Q: How often do I service it?
A: Check the oil level every 5,000 to 10,000 km and drain when needed. Replace the element around every 40,000 km.
Keep the 4JJ1 Breathing Clean.
ProVent Ultimate can, 4JJ1 bracket, hoses, drain and hardware. Free express shipping Australia-wide.
Common Rail Cowboys is not affiliated with Isuzu or Direction Plus. Vehicle and brand names are used for identification only. Installation should be carried out by a competent person. Fitment is the buyer's responsibility: check the Direction Plus fitment guide or send us your VIN before ordering. Modifications may affect vehicle warranty and compliance.
