Jaguar AJ-V6 engine - Definition and Overview

The Jaguar AJ-V6 engine is a specialized version of Ford's Duratec 25/30 V6. One notable addition is the use of variable valve timing, a feature also shared with Mazda's version of the engine. It is available in 2.0 L, 2.5 L and 3.0 L displacements.

Jaguar's AJ-V6 engine has an aluminum engine block and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder with VVT and features fracture-split forged powder metal connecting rods and a one-piece cast camshaft, another differentiator from the Ford and Mazda versions.

AJ20

The AJ20 2.1 L (2099 cc) version has a 81.6 mm bore and 66.8 mm stroke. Although it displaces nearly 2.1 liters, it is marketed as a "2.0". It produces 157 hp (117 kW) and 148 ft.lbf (196 Nm). The compression ratio is 10.75:1.

This engine is used in the following vehicles:

• Jaguar X-Type 2.0 (UK)

AJ25

The AJ25 is a 2.5 L (2495 cc) version built in Ford's Cleveland, OH #2 factory. It is stroked to 79.5 mm. It delivers 192 hp (143 kW) at 6800 RPM with 178 ft.lbf (241 Nm) of torque at 3000 RPM from 10.3:1 compression.

This engine is used in the following vehicles:

• Jaguar S-Type 2.5 (UK)
• Jaguar X-Type 2.5

AJ30

The AJ30 is a 3.0 L (2967 cc) version and is the most common, especially considering the Duratec 30. It has an 89 mm bore and shares the 2.5's 79.5 mm stroke. In the X-Type, it produces 231 hp (172 kW) and 209 ft.lb (284 Nm).

This engine is used in the following vehicles:

• 2000-2004 Jaguar S-Type 3.0
• 2002-2004 Jaguar X-Type 3.0
• Jaguar XJ6
• 2006 "baby" Land Rover

See also

• Ford Duratec engine
• Jaguar AJ-V8 engine

	Current: XJ6 / XJ8 / XJ12 / XJR| S-TYPE | X-TYPE | XK8 / XKR
	Historic: Mark IV | Mark V | XK120 | Mark VII | C-Type | D-Type | XKSS | XK140 | Mark VIII | XK150 | Mark IX | Mark I | Mark II | E-Type (XKE) | Mark X | S-Type | XJ6 | XJR13 | XJS | XJR9 | XJ220 | XJR15
	Engines: XK6 | V12 | AJ6 | AJ-V8 | AJ-V6
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