Land Rover Defender 110 P525 V8 Engine Replacement Compare Prices & Get Quotes

A reconditioned or rebuilt P525 5.0L supercharged V8 engine for the Defender 110 typically costs between £15,000 and £28,000 for the supply-only unit in the UK.

• Used P525 engines start around £10,000 but carry higher risk due to lower mileage.
• Rebuilt units with pre-checked superchargers sit at the £18,000-£28,000 mark.
• Supply and fit labour will add £1,040-£1,430 depending on the specialist.

The P525 5.0L supercharged V8 is prone to Eaton supercharger coupler wear and coolant crossover pipe degradation. Watch for early warning signs.

• A distinct metallic rattling or whining noise from the engine bay, especially at idle.
• Sudden loss of boost pressure or reduced acceleration performance.
• Unexplained coolant loss or visible leaks around the supercharger housing.

Yes, the modern L663 Defender 110 V8 market holds its value exceptionally well, making a full engine replacement a financially sound decision.

• Modern P525 V8 models regularly sell for £80,000 to £120,000+.
• An £18,000-£28,000 rebuilt engine preserves the vehicle's drivability, warranty status, and collector appeal.

Because the P525 is a complex, densely packed supercharged V8, a specialist workshop requires specific JLR diagnostic tools and careful extraction.

• Engine removal and refitting usually takes 16 to 22 hours of labour.
• Total workshop turnaround is typically 4 to 6 working days, including ECU coding, adaptation, and thorough dyno testing.

The P400 uses a 3.0-litre inline-six Ingenium petrol engine with an electric supercharger and mild-hybrid system, whereas the P525 is a traditional 5.0-litre V8 with a mechanical roots-type supercharger.

• The P525 delivers significantly more power (525PS vs 400PS) and a distinct V8 exhaust note.
• The P525 architecture is older but proven, though it requires more rigorous cooling system maintenance than the newer inline-six.