Mitsubishi PAJERO SPORT(BRAZIL) 1999-2006 4G54 Aluminum G54B 4G54 Bare Cylinder Head Assembly MD086520 Pajero Pick-Up – OEM MD026520

Product Overview: This 4G54 / G54B cylinder head assembly is manufactured for the Mitsubishi 2.6-litre four-cylinder petrol engine, a durable powerplant fitted to the Pajero, L200 and related light commercial and off-road models. It is supplied as a bare cylinder head casting machined to original equipment dimensions, allowing the existing valvetrain and camshaft components to be transferred or renewed as required for a full repair or rebuild.

Key Features: The casting is produced from high-grade aluminium or cast iron and CNC-machined for accurate deck flatness, correct valve seat concentricity and consistent combustion chamber volume. Valve guide bores and seat pockets are cut to original angles so that valves seat correctly and compression remains even across all four cylinders. Machined intake and exhaust flanges ensure reliable gasket sealing and correct manifold alignment, while cooling passages follow the factory design for uniform temperature distribution.

Vehicle Compatibility: This head fits Mitsubishi Pajero Sport (Brazil, 1999-2006), L200 (Brazil, 1996-2001), Nativa and Pajero Sport (2008-2015), Pajero for the Chinese market (1995-2005 and 2007-2019) and Pajero and Montero export models (1982-2004) equipped with the 4G54 engine. Confirm the engine code, casting number and OE reference before ordering.

Specifications: Engine code 4G54; displacement 2.6 litres; inline four-cylinder petrol; material cast iron or aluminium; standard size; new condition; supplied as a bare assembly; 12-month warranty; intended for replacement and repair.

OEM / Reference Numbers: MD026520, MD086520, MD311828 and AM16-10-100. Cross-reference these numbers with the casting identification and part label on the original cylinder head to confirm the correct specification.

Applications: Suitable for SUVs, off-road vehicles, pickups and light commercial vehicles, covering engine overhauls, rebuilds, workshop repairs and fleet maintenance where a factory-specification head casting is required.

Benefits / Replacement Information: Replacing a cracked or warped original casting with this unit restores correct combustion sealing, eliminates coolant loss and combustion gas transfer, and provides a sound foundation for new valves, guides and seats. It is a cost-effective route for workshops carrying out full cylinder head reconditioning.

Installation or Fitment Notes: Installation should be carried out by a qualified technician. Check the block deck for flatness, have the head pressure tested, and fit new valve guides, seats and seals as required. Use a new head gasket and new head bolts where specified, torque in the correct sequence to the manufacturer's figures, verify valve clearances, then bleed the cooling system before road use.