Does your Range Rover Sport engine face a snapped crankshaft on its 3.0L SDV6 or a timing chain stretched on its 5.0L Supercharged V8? Britannia Rebuilds is the UK's leading engine specialist, rebuilding and reconditioning quality Sport engines for decades. Whether you need the petrol (MHEV), diesel (MHEV) or plugin hybrid (PHEV) engine, we've got you covered. Each unit is equipped with quality parts to fix JLR factory design faults permanently.
We don't just replace damaged components. Our master engineers completely strip, machine, and re-engineer the classic Range Rover Sport powerplants (L320 & L494), fitting upgraded components to solve factory design weaknesses.
To permanently solve the infamous 3.0 SDV6 spun-bearing issue, we line-bore the cylinder block to accept wide-flange, keyed (tanged) bearings that physically cannot spin out of alignment.
On the supercharged V8 and SVR models, we eliminate timing chain stretch by installing upgraded heavy-duty timing chains and steel-backed guide rails that outlast original JLR specs.
We perform full diagnostic scans, injector programming, adaptation clearing, and ECU synchronisation using dealer-equivalent JLR diagnostics to ensure flawless running.
Enjoy dealer-level precision, upgraded internal mechanics, and personal service at up to half the cost of a franchise main dealer replacement block.
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.
Every engine we process is subject to rigorous crack-testing, line boring, cylinder honing, and complete JLR ECU programming to ensure massive performance and longevity.
Find the engine codes customers ask for most often across Jaguar, Land Rover and Range Rover models.
Every Jaguar, Land Rover and Range Rover engine is assessed for failure severity, rebuild viability and machining needs before reconditioning begins, with the aim of restoring oil pressure, compression, timing, sealing 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.
View genuine workshop images that show the quality of our ongoing work, completed replacements and finished results.
The Range Rover Sport (L320 & L494) is an iconic symbol of luxury performance, offering unmatched presence and high-performance dynamics. However, underneath its aggressive styling lie well-documented powertrain vulnerabilities. The 3.0-litre twin-turbo SDV6 diesel engine is infamous for crankshaft failures. At Britannia Rebuilds, we don't just replace engines with standard parts. Our advanced reconditioning process completely cures this weak spot. We line-bore the cylinder block and fit custom, keyed (tanged) main bearings that are physically locked into place. This, along with a polished, hardened steel crankshaft and upgraded high-flow oil pump, permanently eliminates the oil starvation fault. On our V8 Supercharged models, we fit upgraded duplex chains and steel-backed guides, giving your Range Rover Sport a robust powertrain that outlasts the original.
Sourcing a replacement engine can be stressful. Many owners make the mistake of buying standard used engines from scrap yards, but these are often ticking time bombs, already suffering from timing chain stretch, blocked oil ports, or crankshaft micro-fractures. Generalist garages often lack the JLR-specific timing tools, cleanrooms, and diagnostics to properly perform these complex engine swaps. Incorrect ECU programming or an incomplete oil cooling system flushing will cause a replacement engine to seize within weeks.
Our complete supply-and-fit service takes away all the stress. We perform a clean-room installation of our re-engineered engine, flush the turbos and intercooler, and execute live JLR Pathfinder diagnostic coding. Trust your Sport to the specialists and enjoy thousands of worry-free luxury miles ahead.
Quick answers about Range Rover engine supply, fitting, rebuilds, reconditioning, and warranty-related questions.
