Used and Reconditioned Land Rover Discovery 4 Engine for Sale with Supply & Fitting Options

The Land Rover Discovery 4 is a robust 4×4 known for luxury and versatility. Its strong drivetrain makes long trips and off road adventures feel effortless. Over time, however, even the best engines suffer wear. Problems such as timing chain stretch, crankshaft failure and overheating are reported in diesel 3.0 TDV6 and SDV6 units. When a failure occurs, fitting a new engine from the main dealer can be prohibitively expensive. That is why many owners choose to install used or reconditioned engines. A quality used engine can extend your vehicle’s life at a fraction of the cost, while a reconditioned unit has been cleaned, inspected and refreshed with new parts, offering reliability and peace of mind.

Apex Engines provides complete engine supply and fit service package for every Land Rover Discovery 4. Our specialists test, prepare and install engines in house to ensure your vehicle returns to the road quickly. We stock both low mileage used engines and fully reconditioned TDV6 and SDV6 engines. Each engine is checked for compression, fuel system performance and pressure integrity. We also offer vehicle recovery and delivery to make the process smooth. With up to 50% discount over main dealer prices, fast turnaround and up to 12 months warranty, we are one of the most trusted engine specialists for your Discovery 4 replacement in the UK.

What are the common Land Rover Discovery 4 engine problems?

The Discovery 4 shares many components with Range Rover models. While robust, its engines have known weak points. Understanding these issues helps decide whether a repair or replacement is the best solution.

1. Cracked Cylinder Heads and Overheating – Diesel TDV6 and SDV6 engines can develop cracks in the cylinder head due to overheating. A cracked head allows coolant and oil to mix, leading to major engine damage.
2. Timing Chain Stretch – Land Rover Disco 4 can suffer timing chain elongation. A stretched chain may jump teeth and cause misfires or complete engine failure. Early signs include noisy starts and engine misfires.
3. Turbocharger Failure – The turbo on TDV6 and SDV6 engines operates under extreme pressure. When it fails, metal fragments can enter the oil system and cause low oil pressure or a seized engine.
4. Crankshaft Failure In SDV6 Diesel Engines – One of the most serious Discovery 4 engine problems is crankshaft failure. It often occurs when the crankshaft snaps or spins its bearings, causing a total loss of power. Early warning signs include knocking noises, low oil pressure and difficulty starting.
5. Other Known Faults – Supercharger issues, EGR valve blockages in diesels, fuel injector failure, oil pump failure and cooling system leaks all appear in various Discovery models. A blocked EGR valve restricts airflow, causing poor performance, while oil pump failure can lead to instant loss of oil pressure.

Used Land Rover Discovery 4 TDV6 & SDV6 Engine for Sale

A used engine comes directly from another vehicle. It is removed in its original state and sold after basic testing. Used engines are ideal for older vehicles with limited resale value. They are significantly cheaper than new Land Rover engines but offer a quick way to get your vehicle back on the road. Our stock includes low mileage Discovery 4 2.7 litre and 3.0 litre TDV6 and SDV6 engines. Each engine is tested for compression, fuel system integrity, smoke levels and cooling system pressure. We only accept units that pass our rigorous checks. Before sale, we verify mileage and service history so you know you are buying a genuine, healthy part.

We stock both TDV6 and SDV6 diesel engines for Land Rover and Range Rover models. The widely used 3.0 L V6 diesel engine code 306DT, fits Discovery 4 models produced from 2009 to 2018. We also source smaller 2.0 L units and larger 4.0 L or 5.0 L petrol engines for the Range Rover Sport. Whether you need a complete engine or a long block, our in house team can supply and fit the right specification for your vehicle.

How Much Land Rover Discovery 4 Engine Replacement Cost?

Replacing a Discovery 4 engine is a major investment. A brand new engine from a main dealer is typically expensive and may not make financial sense for an older vehicle. A high quality used engine costs significantly less and still provides reliable performance. Reconditioned engines sit between rebuild and used engines: they cost more than used units but offer greater longevity and reliability due to the replacement of worn components.

The exact cost of replacement varies depending on the engine type (TDV6, SDV6), whether the engine is used or reconditioned, and whether you need supply only or supply and fit package. Other factors include mileage, engine code, the age of the vehicle and any required auxiliary parts such as turbos or injectors. Because of these variables, we provide personalised quotes rather than general prices. You can expect a saving of up to half compared with buying new. Contact our team for a free engine quote, and we will provide options tailored to your vehicle and budget.

Frequently Asked Questions About Discovery 4 Engines

1- What engine is in a Land Rover Discovery 4?

Most Discovery 4 models use a 3.0 litre diesel V6 with either TDV6 or SDV6 tuning. These Land Rover Discovery 4 diesel engines are very popular. The common engine code for the diesel unit is 306DT, and it powers Rover vehicles from 2009 to 2018. Earlier Land Rover models also came with a 2.7 litre TDV6.

2- Which Land Rover Discovery 4 engine is best?

The later SDV6 diesel engines offer improved performance and a higher power output capacity than earlier TDV6 units. They benefit from updates to the crankshaft and oil pump design, improving reliability. For drivers who prefer lower running costs, the 2.7 litre TDV6 may be adequate.

3- How much to rebuild a Land Rover Disco 4 engine?

Rebuilding involves stripping the engine and replacing worn parts. The cost of a rebuild depends on the damage and the parts needed. In some cases, a rebuild can be more economical than buying new. Our team can assess your engine, provide a diagram of the issues, and advise on the best option, whether that is to rebuild or buy reconditioned one.

4- What are the Land Rover Discovery 4 engine swap options?

The simplest swap is to fit the same engine type and code, such as replacing a 3.0 TDV6 with another TDV6. There are various replacement engines for Land Rover available. Some owners have experimented with fitting Jaguar V6 diesels, but this requires significant modification and isn’t a straightforward fit. We recommend sticking to engines for your Land Rover Discovery 4 to maintain reliability and simplify installation.

5- Is the 3.0 TDV6 engine reliable?

The 3.0 TDV6 is generally reliable when maintained correctly, but it does have known vulnerabilities. Crankshaft failure can occur, particularly on high-mileage vehicles. Maintaining proper oil change intervals, using high-quality oil and addressing any knock or low oil pressure promptly will improve longevity. The same applies to engines and Land Rover Discovery models in general.

6- How much is a Land Rover Discovery 4’s new engine?

A new engine from a dealership is the most expensive option, typically ranging between £4,000 and £7,500. That is why most owners choose used and reconditioned engines, which provide similar performance with significant savings. We supply low mileage used and reconditioned units that offer the best balance of cost and longevity performance.

7- What is the Land Rover Discovery 4 engine’s lifespan?

With regular servicing, proper oil changes and attention to cooling, a 3.0 TDV6 or SDV6 engine can last well over 100,000 miles. Some mileage Land Rover Discovery 4 engines run for many more miles, especially when oil and coolant are changed more frequently than factory recommendations.

8- What does the Land Rover Discovery 4 engine knocking noise mean?

A knocking noise may indicate crankshaft or bearing wear. It can also come from a failing injector or lack of oil pressure. If you hear knocking, stop driving and have the engine inspected immediately to address any Land Rover Discovery 4 related issues. Continuing to drive with a knocking engine risks catastrophic failure. Get a quote from our trusted engine specialists today.

9- What is the Discovery 4 expected turnaround time?

When you choose our Rover Discovery 4 engine supply and fit service, we aim to minimise downtime. Having an in-house stock of Land Rover Discovery engines and specialist technicians means we can remove the old unit, install the replacement, and return your vehicle quickly. The exact turnaround for the 4 engine supply and fit service depends on engine availability and the type of replacement engine including whether it is new or used, but we strive for efficient completion so you can get back on the road.

10- Why choose Apex Engines for the second hand Disco 4 engines?

Our engine specialists offer the best service to satisfy every Land Rover Discovery owner. When you buy from us, you can expect:

• Supply And Fit Service – We manage removal and installation in our workshop, ensuring proper alignment and integration for your Land Rover Discovery 4 diesel engine.
• Fast Turnaround – Our large stock and in-house facilities allow quick replacements, reducing downtime for your vehicle.
• Up To 50% Discount – A top quality reconditioned and used engine costs far less than a new engine, saving you a significant percentage. We offer the best reconditioned Land Rover Discovery engines on the market.
• Up To 12 Month Warranty – Every engine passes rigorous engine testing checks and comes with a warranty period for peace of mind.
• Vehicle Recovery And Delivery Options – We can collect your Discovery 4 and install the engine on your request (T&Cs apply). We can also deliver a quality engine to your desired location if you can’t come to our garage.

Call for a free engine quote to find a low mileage Land Rover Discovery unit today.