Perkins 1004.4 “AA” build. Also known as a “Flat Top” or “Donkey” Engine.
At Timik Engines, near Southampton in Hampshire, we specialise in remanufacturing quality diesel engines on-site. As proud members of the Federation of Engine Re-manufacturers, we ensure every engine meets the rigorous standards of BSI AU 257:2002, part of the British Standard Automobile Series.
The Perkins Phaser 1004.4 is a 4-cylinder diesel engine offering 4.0 litres of displacement with naturally aspirated induction and direct injection. Manufactured from 1986 to 1998, the Phaser 1004.4 became a mainstay engine across agricultural and industrial applications.
Its robust construction and direct injection system delivered reliable power output with good fuel economy, making it a practical choice for demanding work environments. This engine powered Massey Ferguson tractors including the 362, 365, 375, 390, and 398 models.
It was also widely adopted by JCB for backhoes and telehandlers, and found its way into forklifts, compressors, and industrial handling equipment across the UK and Europe. The Phaser 1004.4’s popularity stems from its straightforward engineering, strong parts availability, and proven durability.
Mechanics familiar with Perkins 1000 Series engines find servicing and repairs manageable, and the engine’s design allows for rebuild and remanufacture to original specifications. Post-assembly, each engine undergoes rigorous dynamometer testing, guaranteeing reliable operation under realistic conditions.
The engine block is bored back to standard with new liners fitted. The cylinder head is remanufactured with valve seats re-cut and new valves fitted. The crankshaft is ground to precise tolerances.
All engines are rebuilt in our clean workshop with new pistons and rings, bearings, oil pump, water pump, and complete gasket set. Fuel injection equipment is remanufactured and turbochargers replaced where applicable.
Every engine is dynamometer tested to confirm correct power output, oil pressure, and operating temperatures. Engines are painted and prepared for delivery with full documentation.