It doesn’t matter if you own a Range Rover Sport, Vogue, or Velar powered by the legendary 3.0 TDV6/SDV6, Britannia Rebuilds sources quality low mileage engines, rebuilds and fits precision matched 306DT engines across the UK. Every unit is verified by code, pressure tested and protected by up to a 12-month warranty.
Specialist-level understanding of the 3.0L V6 diesel platform across all Range Rover applications from the L320 and L405 to the L494 Sport and L560 Velar, covering TDV6 single-turbo and SDV6 bi-turbo configurations.
Every replacement starts with engine code confirmation, donor integrity assessment, rebuild feasibility analysis, and ECU-matching checks, ensuring flawless compatibility before dispatch or fitment.
From sourcing and reconditioning to precision machining, pre-fitment quality control, and final installation, everything stays under our roof. No outsourced guesswork, no third-party surprises.
Substantial cost advantages over main dealer pricing, with up to 12 months warranty and complete peace of mind on every 306DT engine we supply or fit in the UK.
The Range Rover 306DT 3.0 TDV6/SDV6 diesel engine is powerful and refined, but it can develop serious faults if servicing, oil quality, timing belts, turbo health or emissions systems are ignored. At Britannia Rebuilds, we inspect the exact fault before recommending repair, rebuild, reconditioning or replacement.
| Problem | Early Causes | Solution |
|---|---|---|
| Crankshaft failure | Poor lubrication, low oil pressure, long service intervals or heavy engine load. | Stop driving, inspect bearings and crankshaft. Severe damage may need a replacement engine. |
| Low oil pressure | Worn oil pump, sludge, wrong oil grade or blocked oil pickup. | Test oil pressure, inspect oil pump and check internal wear before repair. |
| Timing belt failure | Overdue belt service, worn tensioners or poor maintenance history. | Replace belt, tensioners and idlers. If snapped, inspect valves and pistons. |
| Rear fuel pump belt failure | Rear belt often missed during timing service. | Replace front timing belt and rear fuel pump belt together. |
| Turbocharger failure | Oil starvation, boost leaks, DPF blockage or high mileage. | Check turbo, oil lines, intercooler pipes and DPF before replacing turbo. |
| Injector over-fuelling | Faulty injectors, poor spray pattern or incorrect coding. | Test injectors, replace faulty units and check for piston damage. |
| EGR valve blockage | Carbon build-up from short journeys and poor combustion. | Clean or replace EGR valve and check intake system. |
| EGR cooler leak | Internal cooler cracking or corrosion. | Pressure-test cooling system and replace faulty EGR cooler. |
| DPF blockage | Short trips, failed regeneration, injector or EGR faults. | Diagnose the cause, clean or replace DPF and service the engine oil. |
| Cracked inlet manifold | Heat, age, boost pressure and oil contamination. | Smoke-test the intake system and replace cracked manifold. |
| Carbon build-up in intake | EGR soot mixed with oil vapour. | Clean intake system and repair EGR or breather faults. |
Every Range Rover and Land Rover 306DT engine undergoes rigorous failure analysis, rebuild viability assessment, and precision machining before reconditioning begins, targeting the restoration of oil pressure, compression, timing accuracy, sealing integrity, and thermal stability.
Electronic fault tracing is combined with compression, leak-down, and lubrication analysis to determine whether the engine is structurally suitable for reconditioning.
The unit is dismantled to core level and cleaned thoroughly to remove carbon, sludge, coolant residue, and metallic debris without compromising machined surfaces or gallery integrity.
Cylinder geometry, crank journals, deck flatness, valve train wear and bearing tolerances are measured precisely, with honing, resurfacing, and seat correction carried out where required.
The engine is rebuilt using renewed wear components, updated timing and sealing hardware, and torque-angle assembly procedures to restore mechanical precision and durability.
Final testing verifies oil pressure, idle stability, thermal behaviour, and ECU compatibility so the finished engine delivers factory-level refinement and dependable performance.
Every 306DT replacement engine is validated for engine code accuracy, model-specific ECU compatibility, ancillary fitment, and drivetrain integration across all Range Rover diesel variants.
Recent customer feedback from owners who used our engine supply, replacement, and fitting services.
They sourced the correct engine for my vehicle and the whole process was smooth from start to finish. Great communication and professional service throughout.
The rebuilt engine is perfect and running like new. I saved a significant amount compared to the main dealer and received fantastic advice and support. Very happy!
They verified my engine code, supplied the right engine and fitted it perfectly. Their knowledge and attention to detail gave me total peace of mind. Highly recommended.
Reconditioned engine supplied and fitted in less time than expected. The workshop team were professional and kept me updated at every stage.
View genuine workshop images that show the quality of our ongoing work, completed replacements and finished results.
A proper Range Rover 306DT engine replacement never starts with a parts catalogue; it starts with a thorough diagnosis. At Britannia Rebuilds, we interrogate every compression reading, trace every oil pressure anomaly, investigate cooling system behaviour, and assess internal wear indicators before recommending any course of action. This disciplined approach determines whether your Range Rover needs a targeted repair, a full 306DT engine rebuild, or a complete powertrain swap using one of our rigorously tested supply units.
If you're searching for a Range Rover 306DT engine for sale, we maintain an extensive inventory of tested used units, fully rebuilt engines, and precision-reconditioned 306DT powerplants ready for fast UK-wide dispatch. Whether you drive a Range Rover Sport L494, a Vogue L405, a Discovery 4 L319, or a Velar L560, we stock engines matched to your exact model year and specification, including the Range Rover Sport 2017 engine, Range Rover Vogue 2015 engine, and the Discovery 4 3.0 TDV6. Each unit is verified by engine code before it ever leaves our workshop floor.
The 306DT remains one of the most frequently requested engine codes we handle and one of the most critical to get right. A mismatched or unverified engine creates cascading problems before the old ones are solved. That's why every 306DT engine we supply passes through our full suitability protocol, ensuring faultless compatibility with your vehicle's ECU, ancillary systems, and drivetrain configuration. The result: a Range Rover that performs exactly as it should, powerfully, quietly, and without compromise.
Quick answers about Range Rover engine supply, fitting, rebuilds, reconditioning, and warranty-related questions.
