Mitsubishi 4D56U / 4D56Di-T 2.5L Cylinder Heads & Engine Parts (2006–2015)

Looking for a premium aftermarket replacement Mitsubishi 4D56 or 4D56Di-T 2.5L turbo diesel cylinder head? We supply brand-new complete heads, gasket sets, and internal engine components from premium Australian stock with rapid nationwide delivery.

The common-rail Mitsubishi 2.5L DI-D engine (Triton, Pajero) is a proven workhorse. Still, severe heat stress or EGR issues often crack the heads around the valve seats—common symptoms include hard starting when cold, coolant pushing out of the overflow, or overheating under load.

Why Choose Midland Cylinder Heads?

Australian-Assembled Quality: Our licensed technicians build and inspect every brand-new cylinder head to strict OEM specifications, with all valve depths pre-set during assembly.
Thickest MLS Gaskets: Our kits feature high-grade multi-layer steel (MLS) head gaskets engineered to ensure maximum clearance and perfect compression sealing.
Included Torque Specs: Every order includes the correct tightening sequence and torque specifications for a perfect installation.
12-Month Warranty: Drive with peace of mind with our 12-month, unlimited-kilometre warranty on all parts.
Fast Dispatch & No Core Exchange: Units are sold outright (no need to send your old head back) with fast dispatch from our Perth and Melbourne hubs.

Our Parts Summary

Brand-New Assembled Cylinder Head: Premium replacement unit with brand-new valves and valve springs, professionally fitted and vacuum-tested.
Premium Head Gasket Set with Bolts: Comprehensive thick-grade multi-layer steel (MLS) head gasket set with all required seals, O-rings, and fresh Torque-to-Yield (TTY) stretch bolts.

If you need technical help or want to check stock, call John directly on 0406 611 288. Please note we are parts specialists only—we do not provide mechanical vehicle fitting.

Browse 4D56 2.5L Parts

Challenger Triton 4D56Di-T 4d56u Cylinder Heads and Parts
Machine or surface your cylinder head. Please note that the valves must be set to a specific value below the cylinder head face. When we machine or surface your head, the valves move closer to the face, which may cause them to hit the pistons. If the valve depth is out of specification, we may be unable to machine the face without reseating the valve, and we will require a complete service. Fast Turnaround Visit our shop today with your cylinder head—no appointment needed—for quick and efficient repairs. From $275.00
Recondition your 4D56Di-T 4D56U Cylinder Head Visit our shop today with your cylinder head—no appointment needed—for quick and efficient repairs. From $760.00
Mitsubishi Triton Challenger 4D56U Complete Cylinder Head Assembly Ready-to-install cylinder head assembly for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Fully assembled with valves, springs, camshafts, and rocker arms already fitted, plus a complete MLS gasket set and high-tensile stretch bolts. Suits both 100kW and 131kW power variants. Assembled cylinder head with valves, springs, guides, and seals fitted Inlet and exhaust camshafts fitted Rocker arms fitted Multi-layer steel (MLS) head gasket and complete gasket set included High-tensile stretch bolts included Pressure-tested and ready to install $1,650.00 Order online or by phone. Pickup available in Perth (Midland) or fast dispatch from Melbourne. Also available: 4D56U cylinder head with valves, 4D56U head gasket set with bolts
Mitsubishi Triton Challenger 4D56U Head Gasket Set With Head Bolts Complete head gasket set with high-tensile stretch bolts for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes multi-layer steel (MLS) head gasket, valve stem seals, and all necessary gaskets and O-rings for complete cylinder head installation. Suits both 100kW and 131kW power variants. Multi-layer steel (MLS) cylinder head gasket (thickest specification) High-tensile stretch bolts (torque-to-yield, single-use) Valve stem seals Rocker cover gasket Inlet and exhaust manifold gaskets All necessary O-rings and seals $298.00 Order online or by phone. Pickup available in Perth (Midland) or fast dispatch from Melbourne. Also available: 4D56U head gasket set (without bolts), 4D56U complete cylinder head
Mitsubishi Triton Challenger 4D56U Rocker Cover Gasket Set Complete rocker cover gasket set for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes rocker cover gasket and all necessary seals for complete rocker cover installation. Suits both 100kW and 131kW power variants. 1 x Rocker cover gasket 4 x Injector tube seals 4 x Side injector rail seals 4 x Internal rocker cover seals 1 x Oil filler seal $89.60 Available for online or phone orders. Fast dispatch from Melbourne. Also available: 4D56U head gasket set with bolts
Mitsubishi Triton Challenger 4D56U Timing Kit Complete Complete timing kit for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes the timing belt, tensioner, idler pulleys, water pump, and all hardware needed for a complete timing system replacement. Suits both 100kW and 131kW power variants. Timing belt (OE-spec) Timing belt tensioner Idler pulleys (upper and lower) Crankshaft seal Camshaft seals (inlet and exhaust) All necessary bolts and hardware $328.00 Available for online or phone orders. Fast dispatch from Melbourne. Also available: 4D56U water pump, 4D56U complete cylinder head
Mitsubishi Triton Challenger 4D56 Roller Rockers Roller rocker arm assembly for Mitsubishi Triton and Challenger 4D56 2.5L diesel engines. Direct OE replacement for reliable valve train operation and reduced friction. Precision-engineered roller rockers for long service life. Sold in sets of 4. Complete roller rocker arm assembly Roller rockers for all cylinders OE-spec valve train components $92.00 Available for online or phone orders. Fast dispatch from Melbourne. Also available: 4D56U complete cylinder head
Mitsubishi Triton Challenger 4D56U Crankshaft Bearing Kit Complete crankshaft bearing kit for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes main bearings, big end (conrod) bearings, and thrust bearings for a complete bottom-end rebuild. Standard-size bearings with precision-machined surfaces. Suits both 100kW and 131kW power variants. Main bearing set (standard size) Big end (conrod) bearing set (standard size) Thrust bearings OE-spec clearances $156.00 Available for online or phone orders. Fast dispatch from Melbourne. Also available: 4D56U connecting rod
Mitsubishi Triton Challenger 4D56U Water Pump Replacement water pump for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Direct OE-style replacement with high-quality bearings and seals for reliable cooling system performance. Includes gasket and installation hardware. Suits both 100kW and 131kW power variants. OE-style replacement water pump Sealed ball bearing Cast iron housing with steel impeller Gasket and installation hardware included $129.30 Available for online or phone orders. Fast dispatch from Melbourne. Also available: 4D56U timing kit complete

Challenger Triton 4D56Di-T 4d56u Cylinder Heads and Parts

Machine or surface your cylinder head.
Please note that the valves must be set to a specific value below the cylinder head face. When we machine or surface your head, the valves move closer to the face, which may cause them to hit the pistons. If the valve depth is out of specification, we may be unable to machine the face without reseating the valve, and we will require a complete service.
Fast Turnaround
Visit our shop today with your cylinder head—no appointment needed—for quick and efficient repairs.

From $275.00

Recondition your triton 4d56di-t 4d56u cylinder head

Recondition your 4D56Di-T 4D56U Cylinder Head
Visit our shop today with your cylinder head—no appointment needed—for quick and efficient repairs.

From $760.00

Mitsubishi Triton Challenger 4D56 cylinder head complete - assembled with gasket set

Mitsubishi Triton Challenger 4D56U Complete Cylinder Head Assembly

Ready-to-install cylinder head assembly for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Fully assembled with valves, springs, camshafts, and rocker arms already fitted, plus a complete MLS gasket set and high-tensile stretch bolts. Suits both 100kW and 131kW power variants.

Assembled cylinder head with valves, springs, guides, and seals fitted
Inlet and exhaust camshafts fitted
Rocker arms fitted
Multi-layer steel (MLS) head gasket and complete gasket set included
High-tensile stretch bolts included
Pressure-tested and ready to install

$1,650.00

Order online or by phone. Pickup available in Perth (Midland) or fast dispatch from Melbourne.

Also available: 4D56U cylinder head with valves, 4D56U head gasket set with bolts

Head Gasket Set Mitsubishi 4D56U 4D56Di-T With Head Bolts

Mitsubishi Triton Challenger 4D56U Head Gasket Set With Head Bolts

Complete head gasket set with high-tensile stretch bolts for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes multi-layer steel (MLS) head gasket, valve stem seals, and all necessary gaskets and O-rings for complete cylinder head installation. Suits both 100kW and 131kW power variants.

Multi-layer steel (MLS) cylinder head gasket (thickest specification)
High-tensile stretch bolts (torque-to-yield, single-use)
Valve stem seals
Rocker cover gasket
Inlet and exhaust manifold gaskets
All necessary O-rings and seals

$298.00

Order online or by phone. Pickup available in Perth (Midland) or fast dispatch from Melbourne.

Also available: 4D56U head gasket set (without bolts), 4D56U complete cylinder head

Mitsubishi Challenger Ttiton PB 4D56Di-T Rocker Cover Gasket Set

Mitsubishi Triton Challenger 4D56U Rocker Cover Gasket Set

Complete rocker cover gasket set for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes rocker cover gasket and all necessary seals for complete rocker cover installation. Suits both 100kW and 131kW power variants.

1 x Rocker cover gasket
4 x Injector tube seals
4 x Side injector rail seals
4 x Internal rocker cover seals
1 x Oil filler seal

$89.60

Available for online or phone orders. Fast dispatch from Melbourne.

Also available: 4D56U head gasket set with bolts

Mitsubishi Triton Challenger 4D56U Timing Kit Complete

Complete timing kit for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes the timing belt, tensioner, idler pulleys, water pump, and all hardware needed for a complete timing system replacement. Suits both 100kW and 131kW power variants.

Timing belt (OE-spec)
Timing belt tensioner
Idler pulleys (upper and lower)
Crankshaft seal
Camshaft seals (inlet and exhaust)
All necessary bolts and hardware

$328.00

Available for online or phone orders. Fast dispatch from Melbourne.

Also available: 4D56U water pump, 4D56U complete cylinder head

Mitsubishi Triton Challenger 4D56 Roller Rockers

Roller rocker arm assembly for Mitsubishi Triton and Challenger 4D56 2.5L diesel engines. Direct OE replacement for reliable valve train operation and reduced friction. Precision-engineered roller rockers for long service life. Sold in sets of 4.

Complete roller rocker arm assembly
Roller rockers for all cylinders
OE-spec valve train components

$92.00

Available for online or phone orders. Fast dispatch from Melbourne.

Also available: 4D56U complete cylinder head

4D56U 2.5L Crankshaft Bearing Kit Mitsubishi Triton Challenger STD

Mitsubishi Triton Challenger 4D56U Crankshaft Bearing Kit

Complete crankshaft bearing kit for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Includes main bearings, big end (conrod) bearings, and thrust bearings for a complete bottom-end rebuild. Standard-size bearings with precision-machined surfaces. Suits both 100kW and 131kW power variants.

Main bearing set (standard size)
Big end (conrod) bearing set (standard size)
Thrust bearings
OE-spec clearances

$156.00

Available for online or phone orders. Fast dispatch from Melbourne.

Also available: 4D56U connecting rod

Mitsubishi Challenger Ttiton PB 4D56Di-T Common Rail Water Pump Top View

Mitsubishi Triton Challenger 4D56U Water Pump

Replacement water pump for Mitsubishi Triton and Challenger 4D56U 2.5L turbo diesel engines. Direct OE-style replacement with high-quality bearings and seals for reliable cooling system performance. Includes gasket and installation hardware. Suits both 100kW and 131kW power variants.

OE-style replacement water pump
Sealed ball bearing
Cast iron housing with steel impeller
Gasket and installation hardware included

$129.30

Available for online or phone orders. Fast dispatch from Melbourne.

Also available: 4D56U timing kit complete