The TDV8 name covers two major diesel V8 engines used in earlier Range Rover and Range Rover Sport models: the 3.6-litre 368DT and the later 4.4-litre 448DT. Both are powerful twin-turbocharged V8 diesels, but they are different engines with different capacities, outputs and supporting systems. A replacement must therefore be matched by engine code and vehicle specification.
Our Ilford workshop deals with TDV8 diagnosis, rebuild and replacement enquiries where owners are seeing low oil pressure, heavy mechanical noise, turbocharger faults, smoke, overheating, compression loss or severe internal wear. The aim is to establish whether the vehicle needs a targeted repair, a measured rebuild or a complete replacement engine.
Send the registration and engine code before ordering. The 368DT and 448DT are not interchangeable simply because both carry the TDV8 badge.
TDV8 is Land Rover terminology for turbocharged diesel V8 engines used in Range Rover products before later diesel powertrains took over. The 3.6 TDV8 uses engine code 368DT and our engine catalogue lists it at 3,628cc and 200 kW / 272 hp. The later 4.4 TDV8 uses engine code 448DT and is listed at 4,367cc and 230 kW / 313 hp. Land Rover documentation describes the 4.4 TDV8 as a twin sequential turbocharged and intercooled diesel paired with an eight-speed automatic transmission in Range Rover applications.
| Engine code | Capacity | Fuel | Current catalogue output | Typical application |
|---|---|---|---|---|
| 368DT | 3628 cc | Diesel | 200 kW / 272 hp | Earlier Range Rover Sport and Range Rover TDV8 applications |
| 448DT | 4367 cc | Diesel | 230 kW / 313 hp | Later Range Rover / Vogue and Range Rover Sport TDV8 applications |
The registration, model year and vehicle generation should be checked with the engine code because turbo, emissions, cooling and drivetrain interfaces vary between models.
The 3.6-litre 368DT is strongly associated with the first-generation Range Rover Sport. Our engine catalogue lists it alongside the Sport engine range. On an older TDV8, diagnosis should consider lubrication history, crankshaft and bearing condition, turbocharger health, smoke, cooling performance and compression before the engine is replaced.
The 3.6 TDV8 was also used in Range Rover/Vogue applications. Vehicle generation and engine code matter because ancillary layouts and electronic systems differ from the Sport.
The later 4.4 TDV8 448DT delivered more power and torque and was paired with an eight-speed automatic transmission in Range Rover applications. The current rebuild content identifies crankshaft-bearing and oil-pump work as common areas considered during 4.4 TDV8 rebuilds.
The 4.4 TDV8 also appears in the Sport catalogue. Because the same engine family can be installed in more than one model, the correct replacement should be verified against the registration rather than sourced only by displacement.
Heavy knocking, metal contamination or low oil pressure can indicate serious bearing or crankshaft wear. The current Range Rover rebuild content specifically identifies crankshaft-bearing work on 3.6 and 4.4 TDV8 engines. If the engine continues to run with low oil pressure, damage can extend beyond a straightforward bearing repair.
Oil pressure should be measured rather than inferred from a warning light alone. Pump condition, pickup, oil quality, bearing clearances and internal contamination all need to be checked before a rebuild or replacement decision is made.
TDV8 engines use turbocharging systems that can create smoke, reduced boost, oil consumption or noise when faults develop. Turbo damage can also contaminate or starve the engine, so the turbo and oil feed/return systems should be included in the repair plan.
An older TDV8 with coolant loss or repeated overheating needs the cooling system checked before another engine is fitted. Cylinder-head and gasket damage, warped surfaces and secondary lubrication damage can follow severe overheating.
Emissions-system faults can trigger warning lights, smoke and restricted performance. These systems should be diagnosed separately from the engine so a serviceable unit is not replaced unnecessarily.
Persistent smoke, difficult starting or uneven running can be caused by injectors, turbochargers, compression loss or internal wear. Compression and fuel-system checks help identify the actual cause.
| Route | When it can be appropriate | Main checks |
|---|---|---|
| Targeted repair | Turbo, EGR, DPF, cooling or external lubrication fault without serious internal damage | Oil pressure, compression, fault codes and contamination |
| Engine rebuild | Major components remain serviceable but bearings, rings, heads or oil system require internal work | Crankshaft, bores, heads, bearing housings, oil pump and cooling history |
| Reconditioned replacement | Severe internal damage or a replacement route is more practical | Correct 368DT/448DT engine code and vehicle compatibility |
| Used engine | Suitable donor engine is available with acceptable history | Mileage, oil pressure, compression, turbo condition and warranty |
A replacement engine can be damaged again if a failed turbo, contaminated oil system, cooling fault or lubrication problem is left unresolved. BOOK A TDV8 ASSESSMENT
Record oil-pressure symptoms, smoke, turbo faults, overheating, coolant loss and previous repair history.
Inspect crankshaft, main and big-end bearings, pistons, bores, cylinder heads, oil pump, turbo-related oil circuits and timing components.
Measure journal wear, bore condition, head flatness and main-bearing alignment before deciding what can be re-used or machined.
Replace worn bearings, piston rings, gaskets, seals, timing components and oil-system parts according to engine condition.
Set clearances, timing and fasteners to the correct 368DT or 448DT specification.
Check oil pressure, cooling performance, compression, turbo operation, fault codes and road behaviour before handover.
Our workshop at 36-A Fowler Road, Ilford IG6 3UT provides a local base for TDV8 engine diagnosis, rebuild and replacement work. Owners can discuss a complete supply-and-fit service or engine supply for another specialist garage.
If the Range Rover is already at another workshop, we can discuss a correctly matched 368DT or 448DT engine subject to availability and specification.
Where we handle the complete job, engine identification, removal, supporting-system repair, fitting and post-installation testing can be managed together.
We offer collection and delivery support across the UK. Provide the vehicle location, registration and current diagnosis so the available arrangement can be quoted.
TDV8 replacement cost depends heavily on whether the engine is a 3.6 368DT or 4.4 448DT, the damage found, turbo and oil-system condition, machining requirements, replacement-engine availability and whether the vehicle needs supply only or a complete fitted job.
3.6 368DT versus 4.4 448DT specification
Crankshaft and bearing condition
Oil-pump and lubrication-system work
Turbocharger condition
Cylinder-head and cooling-system damage
Rebuild versus replacement engine route
Supply-only versus supply-and-fit labour
Rebuilt engines come with a 6-month warranty, agreed in writing for the specific engine and work carried out. Confirm the duration, covered components, labour terms, servicing requirements and claim process before authorising the job.
TDV8 work combines a high-value diesel V8 with complex turbocharging, lubrication and cooling systems. The engine should be diagnosed as part of the complete vehicle rather than treated as an isolated replacement unit. Our JLR-focused workshop starts with registration and engine-code identification, then builds the repair plan around the actual failure.
JLR-focused workshop in Ilford
368DT and 448DT engine-code identification
Range Rover Sport and Vogue TDV8 coverage
Rebuild and reconditioned engine options
Supply-only and supply-and-fit support
UK-wide collection and delivery options
Written quotation before major work starts
The 3.6 TDV8 uses engine code 368DT and the 4.4 TDV8 uses 448DT. They differ in capacity, output, model-year application and supporting systems, so they should not be treated as interchangeable.
Our engine catalogue lists the 3.6-litre 368DT at 200 kW / 272 hp.
Our engine catalogue lists the 4.4-litre 448DT at 230 kW / 313 hp. Land Rover literature also describes the 4.4 TDV8 at 313PS and 700Nm in Range Rover applications.
Bearing wear is one of the internal problems specifically considered in the current Range Rover rebuild content for 3.6 and 4.4 TDV8 engines. A proper diagnosis should include oil pressure, contamination and crankshaft condition before a rebuild or replacement is quoted.
Yes. Turbocharger faults can affect oil supply, introduce oil into the intake or create debris and contamination. The turbo and lubrication circuits should be checked before another engine is fitted.
Yes. Supply-and-fit enquiries can be handled through the Ilford workshop, subject to engine identification, availability and a written quotation.
Send the registration, mileage, engine code if known, symptoms and any diagnosis already completed. That allows the workshop to identify whether the vehicle uses 368DT or 448DT and discuss the appropriate route.
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Send your registration, engine code if known, mileage and current symptoms. We will identify the correct TDV8 specification and discuss diagnosis, rebuild or replacement options before major work starts.
