Good
Low Mount Manifold to suit Toyota 1HZ - CT26 Turbo Flange
Regular price
$700.00
inc. GST
1HZ Radius Fabrications Low Mount Manifold – CT26 Flange
The Radius Fabrications 1HZ low Mount Manifold is one of our longest-standing and most trusted products. Designed specifically for Toyota’s legendary 1HZ, 1HD, 1HD-T, 1HD-FT & 1HD-FTE engines, this manifold allows you to mount a CT26 flanged turbocharger in a high-mount position for improved performance, clearance, and spool characteristics.
Engineered for Performance
We’ve invested countless hours into refining the design of this manifold. Unlike basic high-mount options on the market, our version features:
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CNC-machined high-mount transition under the turbo flange
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Improved exhaust gas direction and velocity
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Better EGT management and reduced pre-collector EMP
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Stronger, smoother spool characteristics
Every manifold is fully jigged, TIG-welded and then decked after welding to ensure a perfect, flat sealing surface and a precise fit onto your 1HZ head.
If you choose to run a wastegate flange, please note:
You must send the flange to us before fabrication as Radius Fabrications does not supply wastegate flanges.
Product
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Suits Toyota 1HZ, 1HD, 1HD-T, 1HD-FT & 1HD-FTE engines
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CT26 turbo flange
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CNC-machined transition for improved flow
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Fully jigged + decked mounting surfaces
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High-quality TIG-welded construction
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16mm thick flange to prevent warping
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Supports a wide range of turbo upgrades
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Designed and fabricated in Australia
INSTALLATION
Installing the Radius 1HZ Low Mount Manifold can be completed by a skilled home mechanic or professional workshop.
Installation Overview
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Remove factory manifold and clean the head’s mounting surface
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Install new manifold with quality gaskets (not included)
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Fit turbocharger to the CT26 flange ensuring correct oil feed and drain angle
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Reconnect or modify dump pipe as required
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Reinstall oil/water lines and supporting hardware
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Heat-cycle the manifold and retorque all fasteners
Important Notes
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No gaskets supplied, purchase from your local parts store
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Replace engine studs with longer studs (same diameter) due to our 16mm flange
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Modifying the manifold voids warranty
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Ensure turbo, manifold, and accessories have adequate clearance
FAQ
What size are the manifold studs?
M10
Do the 1HD-FT and 1HD-FTE manifolds differ?
No. The 1HD-FT manifold is identical to the 1HD-FTE.
Do you manufacture twin-scroll versions?
No, Radius Fabrications does not build twin-scroll manifolds.
Do you supply gaskets with the manifold?
No. Customers must purchase gaskets from their local auto parts store.
How much horsepower can the manifold handle?
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Low mount: up to 200hp
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High mount: up to 280hp
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Merge high mount: 280+ hp
ABOUT THE 1HZ ENGINE
The 1HZ is Toyota’s famous 4.2L straight-six diesel, known globally for its reliability, simplicity, and durability. Found in LandCruiser 80 & 105 Series, it is the engine of choice for touring, off-road, towing, and remote travel.
A high-mount T3 turbo manifold unlocks increased power potential while maintaining dependability, the perfect combination for a tough touring build.
Radius Fabrications operates with a made-to-order policy, resulting in lead times for all products. If you require information on current lead times, please contact us. Additionally, we kindly request that you make your selections carefully, as Radius Fabrications does not offer refunds or exchanges for change of mind or incorrect product selection. We prioritise delivering high-quality, custom-made products to our customers and have therefore implemented a strict "No Change of Mind" refund policy in line with the nature of our business. Shipping costs are subject to change, and additional charges may apply at the time of dispatch based on updated courier rates. Please note that any international import duties, taxes or tariffs, where applicable, are the responsibility of the customer and will vary depending on the destination country.
Customer Reviews
Overall rating: 4.7 / 5 from 19 reviews.
Bolted straight on all pretty simple, definitely spools a bit quicker now paired with me 18g, definitely recommend over the factory cast one
It looks great straight out of the box, was packaged really well, all the welds are spot on, everything lines up and fitted up easily. This photo was taken after 4000ks so the coating is holding up pretty well. My only advice would be to supply new studs and nuts with it and possibly the option of a boss for a pre turbo pyro.
it makes turbo fit really well and spools up faster with a radius manifold
Fitted up really nice, improves the look of the engine bay especially when new turbos are being fitted, can’t fault it.
Very happy with this item. Looks the part and arrived promptly
Positives - Good looking manifold. Everything fits up well and easy to install. Negatives - had to spend an hour with the die grinder to smooth out internal welds and rough exposed seams.
Good quality manifold and it looks the part I’m very happy with my purchase
This manifold is extremely solid and well built 👌
Looks good, definetly tell the skill that gors into making these
Great product no complaints there. Communication on the delays on production time definitely could be better and more forthcoming after took longer then stated of time of purchase. Otherwise awesome product.
Very good craft and welding thankyou guys will be back and pass your info to others
Love it
The manifold is well built and finished off nicely easily one or the seat around
Wicked peace of work, have not had any faults
Expirence was good but which wanted a high mount setup and asked if you guys did one and then month later one comes out but other then that good product
Really happy with the quality of the product. Perfect fitment so far.
Excellent fitment and easy 1 person install.. I also purchased the airbox and turbo manifold which will be fitted later down the track when I finish off the new chassis.
Should come with studs or information on tap size used for bolt holes