Jaguar AJ-V6 engine#AJ126

{{short description|Car engine}}

{{about|Duratec-based 60° V6 engines|AJ-V8-based 90° V6|Jaguar AJ-V8 engine#AJ126}}

{{More references|date=December 2009}}

{{Use dmy dates|date=January 2018}}

{{Use British English|date=January 2018}}

{{Infobox automobile engine

| name = Jaguar AJ-V6

| image = File:Jaguar XKR - Flickr - The Car Spy (7).jpg

| caption = an AJ-V6 in a Jaguar X-Type

| manufacturer = Ford Motor Company for Jaguar Cars

| aka =

| designer = Porsche

| production = 2000–2011

| predecessor = Jaguar AJ16

| successor = Jaguar AJ126

| configuration = 60° V6

| displacement = {{ubl | {{cvt|2099|cc|L cuin|1|order=flip}} | {{cvt|2495|cc|L cuin|1|order=flip}} | {{cvt|2967|cc|L cuin|1|order=flip}} }}

| bore = {{ubl | {{cvt|81.6|mm|in|2}} | {{cvt|89|mm|in}} }}

| stroke = {{ubl | {{cvt|66.8|mm|in|2}} | {{cvt|79.5|mm|in|2}} }}

| block = Aluminium

| head = Aluminium

| valvetrain = DOHC 4 valves x cyl. with VVT

| compression = 10.3:1, 10.75:1

| fuelsystem = Sequential multi-port fuel injection

| management =

| fueltype = Gasoline

| oilsystem = Wet sump

| coolingsystem = Water-cooled

| redline = 6,800

| power = {{cvt|157-260|hp|kW PS|0}}{{Cite web|url=https://www.yasmarinacircuit.com/en/drive/formula-yas|title = Polaris Drift Sprint - Driving Experiences}}

| torque = {{cvt|148-221|lbft|Nm|0}}

| weight =

}}

The Jaguar AJ-V6 engine is a piston engine based on the Ford Duratec V6 engine.{{cite web|url=https://performanceparts.ford.com/download/pdfs/EngineHistory.pdf | title=Ford Racing Engine History | date=July 2018}} The Duratec V6 was originally a Porsche design, purchased by the Ford Motor Company with a proprietary Cosworth cylinder head design to suit Ford's design brief. 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 {{cvt|2099|cc|L|1|order=flip}}, {{cvt|2495|cc|L|1|order=flip}} and {{cvt|2967|cc|L|1|order=flip}} displacements.

The AJ-V6 engine has an aluminium engine block and Jaguar Cars designed aluminium DOHC cylinder heads. It uses sequential fuel injection, has 4 valves per cylinder with VVT, features fracture-split forged powder metal connecting rods and a one-piece cast camshaft and has direct-acting mechanical bucket (DAMB) tappets, these design aspects differentiating the AJ-V6 from the Ford and Mazda versions.