Perkins 1004.4 “AB” or “AH” build engines. Pictured with a side mount turbocharger, using block part number ZZ50293.
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 1004.4T is a turbocharged 4-cylinder diesel engine delivering 4.0 litres of displacement through direct injection. Produced from 1986 to 1998, the 1004.4T offered a significant power upgrade over the naturally aspirated 1004.4 variant.
The addition of turbocharging extended the engine’s capability into heavier agricultural and industrial applications where higher power output was required. This engine powered Massey Ferguson tractors including the 4240, 4245, and 4255 models.
JCB adopted it for telehandlers and loaders, while Seddon Atkinson specified it for light trucks. The engine was also widely used in generator sets, combine harvesters, and industrial power units. The 1004.4T shares the proven architecture of the naturally aspirated 1004.4, with the added complexity of turbocharger servicing.
Parts availability remains strong, and the engine’s design allows for straightforward rebuild to original specifications using genuine Perkins or quality aftermarket components. 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.