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Mitsubishi 4D56TB Cylinder head assembly recessed valves

Mitsubishi 4D56TB Cylinder head assembly recessed valves 171212

171212 https://www.acmeimpex.com.au/web/image/product.template/14624/image_1920?unique=86cd01f
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The Mitsubishi 4D56TB cylinder head assembly (171212) with recessed valves is a direct fit replacement. Also it is ideal when the cylinder head shows signs of creaking, valve-seat wear, or compression loss. It comes fully assembled and ready to install that helps in reducing downtime and eliminating the hassle of sourcing individual components. Our cylinder head assembly is reliable for performance rebuilds, workshop repairs or fleet maintenance where durability and consistency matter.

$ 900.00 900.0 AUD $ 900.00

$USD 850.00

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The 4D56TB cylinder head assembly 171212 is engineered to restore the heart of Mitsubishi 2.5 L diesel (4D56T-series) when the original head has seen better days. Built with recessed (flush) valves and this design ensures proper combustion control and improved sealing, making it especially suitable for engines which are overheating, valve-seat damage or long-term wear.

As this is a fully assembled unit ; Our cylinder heads come with all essential internals which includes valves, springs, guard, and cam components. So workshop owners can jump straight to installation without delay. 

If your old head has warped or developed cracks around the combustion chambers, this replacement is often the fix. Its port layout and chamber design match the OEM 4D56TB configuration, enabling the engine to run smoothly and reliably once everything is torqued down.

Our cylinder head assembly’s standout feature is precision-machined seating surface. The flush-style valves sit below the head surface, which helps maintain the consistent seal with the gasket and reduce the likelihood of future leaks. This is beneficial specially in high-durability applications or heavier use setups. 

What this assembly helps with

  • Perfect fitment for Mitsubishi 4D56TB / 4D56T 8-valve diesel engines
  • Restores compression and proper valve seating when the original is damaged
  • Saves workshop time thanks to the pre-assembled nature
  • A stable, long-lasting solution suited for rebuilds, commercial use, or daily operation
  • Reduces risk of recurring head leaks due to its clean, recessed valve design

Many mechanics favor this assembly when they want a reliable, no-fuss replacement that keeps downtime to a minimum. It’s well suited for utility trucks, commercial fleets, or older 4D56T-powered vehicles that require dependable top-end durability.

Acme Impex inspects each casting for surface quality and dimensional accuracy before dispatch. You get a head that fits right, lasts long, and performs as it should—making your job easier and ensuring your engine’s top end is back to spec.