Flex
Flex Pro 1KD-46 VNT Turbo - 1KD Hilux & Prado | 46mm Drop-In
Flex Pro 1KD-46 VNT Turbo - 1KD Hilux & Prado | 46mm Drop-In
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46mm VNT | Expected 275 to 285 RWHP | Toyota 1KD-FTV 3.0L | Hilux N70, Prado 120, Prado 150
Pre-order, first release: 20 units. Ships as soon as they land, roughly 2 weeks from 12 November 2026.
You wanted more power. You did not want to give up a responsive VNT. We took that to Flex, and Flex delivered.
The Flex Pro 1KD-46 is the bigger brother to the popular Flex 44mm VNT: a 46mm compressor in a variable-nozzle turbo built for the Toyota 1KD-FTV. More air up top, still a VNT, still on your factory actuator.
Why It Exists
The Flex 44mm VNT is our popular 1KD turbo, and the feedback from customers running it was consistent: more power please, but keep it a responsive VNT. Going gated gets you the power, but it is a different turbo to live with.
We passed that feedback to Flex. The 1KD-46 is the answer: the same VNT concept as the 44mm with a bigger 46mm wheel.
Expected Power
275 to 285 RWHP
With supporting mods and appropriate tuning
Expected figure, not a dyno result. Power depends on tune, fuel, supporting mods and conditions.
Key Features
- 46mm compressor wheel: the next size up from the Flex 44mm VNT
- Still a VNT: variable-nozzle boost control for response, no VNT simulator needed
- Expected 275 to 285 RWHP: with supporting mods and appropriate tuning
- Drop-in format: mounts in the factory turbo location on the 1KD-FTV
- Reuses your factory VNT actuator: no gated conversion
- Built by Flex in Thailand
- Tune required: supporting mods and a remap from a reputable diesel tuner are part of the job
Vehicle Fitment
| Vehicle | Engine | Years | Codes |
|---|---|---|---|
| Toyota Hilux N70 | 1KD-FTV 3.0L | 2005 to 2015 | KUN26R / KUN26 / KUN16 |
| Toyota Prado 120 Series | 1KD-FTV 3.0L | 2003 to 2009 | KDJ120 / KDJ125 |
| Toyota Prado 150 Series | 1KD-FTV 3.0L | 2009 to 2015 | KDJ150 / KDJ155 |
Not sure if it fits? Text us your VIN on 0483 930 906 and we will confirm.
What Is Included
- Flex Pro 1KD-46 VNT turbo
Not included: VNT actuator (reuse your original, or see add-ons) and turbo studs and nuts (reuse originals or add our fitting kit).
44mm, 1KD-46 or R77 Pro: Which One
| Turbo | Type | Pick it if |
|---|---|---|
| Flex 44mm VNT | 44mm VNT drop-in | You want the proven all-rounder. Customer dyno results are on its listing. |
| Flex Pro 1KD-46 (this turbo) | 46mm VNT drop-in | You want more power than the 44mm and want to stay on a responsive VNT. |
| Flex R77 Pro 46mm | 46mm internally wastegated | You want to delete the VNT and run a gated turbo. Needs a VNT simulator module. |
Not sure which suits your build? Text us on 0483 930 906 with your mods and what you use the vehicle for.
Recommended Add-Ons
- 1KD turbo stud, nut and gasket kit
- Hilux 1KD turbo actuator (if yours is faulty)
- Prado 1KD turbo actuator (if yours is faulty)
- MCR +30 or +50 injectors
- Front-mount intercooler
- 3 inch turbo-back exhaust, high-flow airbox, remap from a reputable tuner
Fitting Notes
- Fitment by a qualified diesel mechanic recommended. Correct torque specs, oil pre-lube and a clean oil supply are critical for turbo life.
- Check the factory coolant hardlines are not clogged before refitting.
- We sell this turbo as requiring a tune. Supporting mods and a remap from a reputable diesel tuner are required to reach the expected power.
Pre-Order, Shipping and Payment
- Pre-order: first release of 20 units. Orders ship as soon as the turbos land, roughly 2 weeks from 12 November 2026.
- Afterpay, Humm, Klarna and Zip available
- Free express shipping Australia-wide
- NZ and international shipping on request
- Warranty and returns: see our refund policy
Frequently Asked Questions
What power can I expect?
Expected power is 275 to 285 RWHP with supporting mods and appropriate tuning. That is an expected figure, not a dyno result.
When will my pre-order ship?
As soon as the first release lands, roughly 2 weeks from 12 November 2026. The first release is 20 units.
How is this different to the Flex 44mm VNT?
Wheel size. The 1KD-46 runs a 46mm compressor against the 44mm, for more power while staying a VNT.
Is this the same as the Flex R77 Pro 46mm?
No. The R77 Pro is internally wastegated and needs a VNT simulator module. The 1KD-46 stays VNT.
Do I need a tune?
Yes. We sell this turbo as requiring a tune.
Do I have to buy a new actuator?
No. Your factory VNT actuator is reused. Replacement actuators are linked above if yours is faulty.
More Power. Still a Responsive VNT.
Flex Pro 1KD-46: expected 275 to 285 RWHP with supporting mods and tuning. First release of 20 units, pre-order now.
Common Rail Cowboys is not affiliated with Toyota Motor Corporation or Flex (Thailand). Installation should be carried out by a competent person and a tune is required. Fitment to your vehicle is the buyer's responsibility. Performance modifications may affect your vehicle's warranty, insurance and road compliance. Power figures shown are expected figures, not dyno results, and depend on tune, supporting mods, fuel quality and vehicle condition.
