If you’re searching for a Jaguar AJ-V8 engine for sale, you’ve probably got a lovely car with a sick engine. Maybe it’s an XK8 with a rattle that turned out to be the timing chain tensioners, an XJ with low compression, or a Range Rover Sport that overheated one too many times. These cars are worth saving. The bodies are good, the interiors age well, and the V8 is a proper engine when it’s healthy.
The problem is that the AJ-V8 has been around a long time and comes in a lot of versions. Buying the wrong one is easy, and it’s an expensive mistake.
We’re NJ Global Auto Parts. We sell used and rebuilt engines and ship them all over the world. This guide covers what we’d tell you if you called us about a Jaguar AJ-V8 engine for sale: the generations, full specs, which cars take which engine, how we test, what fails, what it costs, and how we get it to you.
What You’re Buying With a Jaguar AJ-V8 Engine for Sale
The AJ-V8 was Jaguar’s first V8, launched in 1996 in the XK8. It’s a 90 degree, all-aluminium, four-cam, 32-valve engine, and over the years it grew from 3.2 litres all the way to 5.0 litres. It went into nearly every Jaguar that had a V8, a lot of Land Rovers and Range Rovers, and even a few Ford, Lincoln and Aston Martin models in related form.
Broadly, there are three generations:
- Generation I (1996 to about 2003): 3.2 and 4.0 litre engines, plus the supercharged 4.0 in the XKR and XJR. The earliest ones had Nikasil-coated bores.
- Generation II (about 2002 to 2009): 3.5, 4.2 and supercharged 4.2 engines, plus the 4.4 used by Land Rover. Iron liners replaced Nikasil, and variable cam timing was improved.
- Generation III (from about 2009): the 5.0 litre engine, naturally aspirated or supercharged, with direct injection. This is sometimes called the AJ133.
So “AJ-V8” covers a lot of ground. When you look at a Jaguar AJ-V8 engine for sale, the generation and size matter more than the name.
If you’d like more history, the Jaguar AJ-V8 engine page covers each version in detail.
Jaguar AJ-V8 Engine for Sale: Full Specifications
These are the main versions we get asked about. Outputs vary with year, model and market, so treat these as typical figures.
| Layout | 90 degree V8, petrol, all-aluminium |
| Valvetrain | DOHC per bank, 32 valves, variable cam timing (varies by generation) |
| Cam drive | Timing chains |
| 3.2 litre | 3,248 cc, about 179 kW (243 PS) |
| 4.0 litre | 3,996 cc, bore x stroke 86.0 x 86.0 mm, about 216 kW (294 PS) |
| 4.0 supercharged | About 276 kW (375 PS), around 525 Nm |
| 4.2 litre | 4,196 cc, bore x stroke 86.0 x 90.3 mm, about 224 kW (304 PS) |
| 4.2 supercharged | About 291 to 306 kW (395 to 416 PS), around 541 to 560 Nm |
| 4.4 litre (Land Rover) | 4,394 cc, about 220 kW (299 PS) |
| 5.0 litre | 5,000 cc, bore x stroke 92.5 x 93.0 mm, about 283 kW (385 PS), 515 Nm |
| 5.0 supercharged | About 375 kW (510 PS) and up, 625 Nm and up in higher-output versions |
| Fuel system | Port injection (Gen I and II), direct injection (5.0) |
| Production | 1996 onward |
The supercharged 4.2 and 5.0 are the ones most people want, and they’re also the ones that need the most careful checking before you buy.
Which Cars Use the AJ-V8
This is the list we work from. It’s a guide only, since the same model could get different engines in different years or markets. Please send us the VIN before you buy a Jaguar AJ-V8 engine for sale.
Jaguar
- XK8 and XKR (X100), 4.0 and later 4.2
- XK and XKR (X150), 4.2 then 5.0
- XJ8, XJR and Vanden Plas (X308, X350, X358), 3.2 to 4.2
- XJ (X351), 5.0 and 5.0 supercharged
- S-Type 4.0, 4.2 and S-Type R
- XF 4.2, XFR and XF 5.0
- F-Type V8 and F-Type R / SVR
- F-Pace SVR
Land Rover and Range Rover
- Range Rover (L322), 4.2 supercharged and 4.4, later 5.0
- Range Rover (L405) and Range Rover Sport (L494), 5.0 supercharged
- Range Rover Sport (L320), 4.2 supercharged, 4.4 and 5.0
- Discovery 3 and LR3 4.4, Discovery 4 and LR4 5.0
Jaguar and Land Rover versions of the same size often use different sumps, intake setups, ancillary brackets and engine management. A Range Rover engine isn’t a direct swap into an XJ, even if they’re both 5.0 supercharged. We sort that out when we match a Jaguar AJ-V8 engine for sale to your car.
Replace or Rebuild?
Sometimes a repair is the right call. Tensioners, a water pump or a coolant pipe are fixable jobs. But when the damage is inside, a replacement usually wins because:
- Bore damage is expensive. Nikasil bores on early engines, or scored liners on later ones, mean machining or a new block.
- Timing jobs are big. On a supercharged engine, getting to the chains is a lot of labour, especially in a Range Rover.
- Parts add up. Chains, tensioners, guides, VVT units and gaskets, and on supercharged engines the supercharger coupling too.
- Downtime. A replacement goes in quickly. A rebuild can leave the car off the road for weeks.
So for many owners, a tested Jaguar AJ-V8 engine for sale is the quickest and cheapest fix.
Used, Rebuilt or Long Block
Every Jaguar AJ-V8 engine for sale we offer is one of these three. Pick based on budget and how long you’ll keep the car.
Used engine
From a donor car, usually written off for body damage. The cheapest option. The testing is what makes it a safe buy rather than a gamble.
Rebuilt engine
Stripped, measured and rebuilt with new bearings, rings, seals, gaskets and usually new chains, guides and tensioners. Costs more, but you’re starting fresh.
Long block or complete
A long block is the core engine. A complete engine usually adds the intake, and on supercharged engines, the supercharger. We list exactly what’s included on the quote.
7 Checks We Make on Every Jaguar AJ-V8 Engine for Sale
This is what we do before an engine goes on offer:
- Engine number, generation and donor. We confirm the size, generation and the car and year it came from.
- Compression or leak-down on all eight cylinders. Uneven numbers and the engine isn’t sold as a runner.
- Bore inspection. With a borescope, looking especially hard at early engines for Nikasil wear.
- Timing chain and tensioners. We check the tensioners and guides, which are the classic weak point on earlier engines.
- Supercharger condition. On supercharged engines, we check for noise, play and the condition of the coupler.
- Oil and coolant. Mixing or metal in the oil is an instant fail.
- External condition. Plastic coolant pipes, sensors, connectors and leaks are photographed and noted.
You’ll see real photos of the actual engine and get a written summary. If there’s a flaw, we tell you before you pay, not after.
Common AJ-V8 Problems You Should Know About
If you’re looking at any Jaguar AJ-V8 engine for sale, these are the faults to ask about.
Nikasil bores on early engines
Many early Gen I engines, roughly up to 2000, used Nikasil-coated bores. High-sulphur fuel in some markets attacked the coating and caused low compression. Most were replaced under warranty years ago with iron-lined engines, but it’s worth knowing which you’re getting.
Timing chain tensioners
Early engines had plastic tensioner pistons that could crack. When they fail, the chain can jump and the engine can be badly damaged. Later engines got metal tensioners. On any older engine with unknown history, replace them.
Coolant pipes and water pumps
Plastic coolant crossover pipes, particularly on the 5.0, can crack and leak. Water pumps also fail with age. Overheating is what kills a lot of these engines, so keep an eye on coolant.
5.0 timing chain guides and tensioners
Some 5.0 engines had tensioner and guide wear, leading to rattles and timing codes. Updated parts exist and are worth fitting.
Supercharger coupler noise
The supercharger drive coupler (isolator) on 5.0 supercharged engines can wear and make a rattle at idle. It’s a known repair and not the end of the engine.
The AJ-V8 is a strong engine overall. It just needs a seller who checks for these specific things.
Signs the Old Engine Is Finished
Before you order a Jaguar AJ-V8 engine for sale, make sure you really need one. These usually mean the engine isn’t worth saving:
- Low compression that doesn’t come up with a wet test
- Visible bore damage
- Metal on the drain plug
- Oil and coolant mixing with no cooler or pipe to blame
- A heavy knock from the bottom end
- A chain that has jumped and bent valves
What Comes in the Crate
We send a written list with every Jaguar AJ-V8 engine for sale we quote. It usually covers the long block with chains and tensioners, plus intake, injectors and the supercharger if quoted as complete, and the sensors fitted when the engine came out. The ECU, harness, radiator and gearbox aren’t normally included unless agreed. If you need them, ask, and we’ll see what the donor car can supply.
Nikasil or Iron Liners: Why It Still Matters
This comes up a lot with early XK8 and XJ8 owners. If you have a late 1990s car and you’re looking at a Jaguar AJ-V8 engine for sale, you want to know which bore type you’re getting.
Nikasil is a hard nickel-silicon coating on the aluminium bores. It’s light and it wears well in normal use. The trouble was fuel with high sulphur content, which attacked the coating and caused bore wear and low compression. Plenty of early cars had their engines replaced under warranty, and those replacements used iron liners.
Today the fuel issue is much smaller in most places, and a healthy Nikasil engine can run fine. But if we sell you an early engine, we’ll tell you which type it is and show you the compression numbers so you can decide for yourself.
Buying for a Range Rover or Land Rover
A big share of the AJ-V8 requests we get are for Range Rovers and Range Rover Sports. These are heavy vehicles, they tow, they work hard, and they run hot in traffic. That’s tough on any V8.
Here’s what we tell Land Rover owners looking at a Jaguar AJ-V8 engine for sale:
- Buy a Land Rover-spec engine. The sump is different to suit the four-wheel-drive layout, and the ancillaries and brackets differ too.
- Check the cooling system hard. Radiator, expansion tank, pipes and water pump. Fitting a good engine into a tired cooling system is asking for trouble.
- Look at the supercharger coolant circuit. The intercooler pump on supercharged models needs to work properly.
- Consider the timing guides on 5.0 engines. Updated parts are worth it if there’s any doubt.
Get these right and a replacement engine in a Range Rover can go a long way.
Questions to Ask Any Seller
Whoever you buy from, these questions will tell you a lot. If a seller offering a Jaguar AJ-V8 engine for sale dodges them, look elsewhere.
- What size and generation is it, and what car and year did it come out of?
- Was it running, and do you have compression figures?
- Can I see photos of this exact engine?
- Is it Jaguar or Land Rover spec?
- Is it supercharged, and is the supercharger included?
- Were the timing tensioners checked or replaced?
- How is it packed, and what’s the freight to me?
We answer all of these in writing before you pay for any Jaguar AJ-V8 engine for sale from us.
For Workshops and Trade Buyers
Many of our Jaguar and Range Rover engine orders come from independent specialists. If you’re buying for a customer, tell us. We can hold an engine while your customer decides, send extra photos or videos of anything you want to see, and quote more than one option so you can offer a choice. If you regularly need a Jaguar AJ-V8 engine for sale in a particular spec, let us know and we’ll keep an eye out for it.
How Much Does a Jaguar AJ-V8 Engine for Sale Cost?
Prices depend on version, condition and stock, so we don’t post one fixed number. These are the main factors:
- Size and generation. 5.0 supercharged engines cost the most, early 4.0 engines the least.
- Supercharged or not. A supercharger adds value.
- Mileage and test results.
- Used or rebuilt.
- Jaguar or Land Rover spec.
- Freight to your location.
Send us your VIN and we’ll give you a real price with shipping. Our current stock is listed on the Jaguar AJ-V8 engine for sale product page. You might also find our notes on rebuilt Jaguar AJ-V8 engines and buying a Jaguar AJ-V8 engine useful.
Shipping a Jaguar AJ-V8 Engine for Sale Worldwide
We ship every Jaguar AJ-V8 engine for sale worldwide by sea or air. Sea is cheaper for most buyers. Air is there when the car is off the road and time matters.
Each engine is drained, sealed, strapped to a pallet or crated, and wrapped against dust and water. We take photos before it leaves. You’ll get the documents you need for customs, though import duties depend on your country. For general background, the World Customs Organization explains how engines are usually classified for import.
See our shipping policy and refund and returns policy for the details.
Fitting Advice for Your Mechanic
Pass this on to whoever is putting the engine in:
- Fresh oil and filter, and prime the oil system before the first start.
- New spark plugs and check the coils.
- New thermostat and check the water pump. Replace any old plastic coolant pipes.
- Flush the cooling system properly. Overheating is the number one killer of these engines.
- On supercharged engines, check the intercooler pump and coolant circuit.
- Check mounts, the flexplate and sensors.
- Clear codes, check live data and road test before handing the car back.
That extra care protects the money you spent on a Jaguar AJ-V8 engine for sale.
Keeping the Engine Healthy
- Change the oil regularly, and more often on short-trip cars.
- Watch the coolant level and temperature gauge. Don’t drive on if it starts to climb.
- Let the engine warm up before using full power.
- Listen for chain rattle on cold starts and act early.
- Fix leaks and warning lights straight away.
Look after it and a good Jaguar AJ-V8 engine for sale will give you many more years of smooth V8 driving.
One last tip: keep a note of every service and repair. If you ever sell the car, a documented history adds value. And if you ever need another Jaguar AJ-V8 engine for sale, you will know exactly which spec to ask for.
Supercharged or Naturally Aspirated?
Some owners ask whether they can upgrade while they’re at it. For example, putting a supercharged engine into a car that came with a naturally aspirated one. It sounds tempting, but it’s rarely worth it.
A supercharged AJ-V8 needs its own intercooler circuit, different fuel system settings, different engine management and often different cooling and gearbox calibration. By the time you’ve changed all that, you’ve spent far more than the power gain is worth, and you may have created problems with registration or insurance in some countries.
Our honest advice is to buy a Jaguar AJ-V8 engine for sale in the same spec your car left the factory with. If you really want more power, it’s usually cheaper to sell the car and buy the supercharged model. That said, if you have a specific project in mind, talk to us and we’ll tell you what’s involved. We’d rather help you plan it properly than sell you the wrong Jaguar AJ-V8 engine for sale and leave you stuck halfway.
How to Order a Jaguar AJ-V8 Engine for Sale
- Send your VIN through our contact page or the site chat, with your model and location.
- We match the engine to your car and confirm the generation and spec.
- You get photos and a quote with freight.
- You confirm and pay. Our billing terms list the options.
- We pack and ship, and send tracking and documents.
We don’t take payment until we’re sure the engine is right for your car.
Other Engines You Might Need
We also stock plenty of other V8s and luxury car engines. Have a look at our Land Rover Td5 guide, the BMW N63 guide, the BMW M62 guide and the Mercedes M278 V8 guide. Everything is in our used engines section.
If you’re still deciding between used and rebuilt, read rebuilt vs used engines. For official model information, visit Jaguar.
Why Buy From NJ Global Auto Parts
We match every Jaguar AJ-V8 engine for sale to the buyer’s VIN, send real photos and honest notes, and quote freight up front. If we don’t have the right engine, we say so. Plenty of our customers are workshops who come back again and again, and that’s the kind of relationship we want with everyone. Read more about us or browse the shop.
Frequently Asked Questions
How do I know which AJ-V8 I have?
Your VIN and engine number tell us the size and generation. Send them and we’ll confirm.
Can a Range Rover 5.0 go into a Jaguar XJ?
The core engine is related, but sumps, intake, brackets and software differ. It’s not a simple swap. Buy the engine that matches your car.
Is your Jaguar AJ-V8 engine for sale used or rebuilt?
We offer both, and every quote says which.
Should I replace the timing chain tensioners?
On older engines with unknown history, yes. It’s far easier with the engine out.
Do you ship to my country?
Yes, worldwide by sea or air.
What if the engine arrives damaged?
Contact us right away with photos. We’ll sort it out using our packing photos and your quote.
A Jaguar AJ-V8 engine for sale should come with real photos, honest test results and a seller who knows these engines inside out. That’s what we try to give every buyer. Send us your VIN through the contact page, and we’ll tell you what we have and what it costs to get it to you.