How much does a Land Rover Defender 130 P400 engine replacement cost-

A reconditioned or rebuilt Land Rover Defender 130 P400 engine typically costs between £4,500 and £10,000 for the supply-only unit, depending on the level of rebuild and specialist documentation provided. - Rebuilt units include upgraded cooling components and timing chain checks. - Supply and fit packages are available through our premium specialist network.

What are the signs of cooling or timing chain failure in a Land Rover Defender 130 P400-

Early detection is critical to preventing catastrophic damage to your Land Rover Defender 130 P400 engine. - Look for unexplained coolant loss, sudden overheating warnings, or a distinct rattling noise from the front of the engine at cold start. - Sweet-smelling exhaust smoke or oil contamination are also strong indicators of internal failure.

Is it worth replacing the engine in a modern Land Rover Defender 130 P400-

Yes, given the strong retained values of the L663 Defender 130, replacing the engine is a highly sound financial decision. - A typical 2022+ model is valued between £65,000 and £95,000+, making a £6,500-£10,000 rebuild a small percentage of the vehicle's worth. - A rebuilt engine with a 12-month warranty adds reliability and protects your premium asset.

How long does a Land Rover Defender 130 P400 engine supply and fit take-

A straightforward supply and fit replacement for a Land Rover Defender 130 P400 typically takes 3 to 5 days at a premium specialist workshop. - This allows time for the engine to be delivered, mounted, and thoroughly calibrated and tested. - Complex cases requiring additional cooling system upgrades may take slightly longer.

Can I upgrade my Land Rover Defender 130 to a P400 engine-

While the L663 chassis was designed with multiple powertrain options, a retrofit is not straightforward. - The P400 3.0L MHEV requires extensive ECU mapping, bespoke wiring harnesses, and upgraded cooling systems to function correctly and pass MOT. - We strongly recommend sticking to a like-for-like replacement to ensure guaranteed compatibility, reliability, and warranty coverage.

Land Rover Defender 130 P400 Specialists

Land Rover Defender 130 P400 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Land Rover Defender 130 P400 engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the best value for your high-performance 8-seat 4x4.

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👑 Premium Inline-6 Specialists

Land Rover Defender 130 P400 Engine

from£6,500 to £10,00...

Usedfrom £2,500
Reconditionedfrom £4,500
Common codesP400, 306PS architecture

Land Rover defender-130 P400 Used Engine — P400 / 306PS Architecture

Land Rover defender-130Used Engine — P400 / 306PS Architecture

Land Rover defender-130 P400 Reconditioned Engine — P400 / 306PS Architecture

Land Rover defender-130Reconditioned Engine — P400 / 306PS Architecture

Land Rover defender-130 P400 Rebuilt Engine — P400 / 306PS Architecture

Land Rover defender-130Rebuilt Engine — P400 / 306PS Architecture

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Land Rover Defender 130 P400 Engine History & Specs at a Glance

When the stretched 8-seat Defender 130 officially launched in 2022, the P400 trim represented the pinnacle of modern JLR inline-six performance, pairing a 3.0-litre mild-hybrid petrol engine with the iconic long-wheelbase chassis for exceptional on-road refinement and robust off-road capability.

2022
3.0L I6 MHEV (P400), 395hp (400PS), launched alongside the new L663 Defender 130, featuring an integrated starter-generator (ISG) 48V mild-hybrid system and an electric supercharger for seamless torque fill.
2023
Present - Continued production with exclusive special editions (e.g., 75th Edition, Carpathian Edition), maintaining the same robust 3.0L Ingenium petrol architecture with refined thermal management and calibration.

Every engine fitted to the Land Rover Defender 130 P400 is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Land Rover Defender 130 P400 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

P400 / 306PS Architecture — 3.0L Petrol MHEV (2022-present)

Power Output: 395hp (400PS)
Years Fitted: 2022-present

Can’t find your exact engine code?-> Get quotes for P400 Land Rover Defender 130 P400 engine replacement

-> Get quotes for P400 Land Rover Defender 130 P400 engine replacement

Common failure points and repair options

Cooling System Leaks & Water Pump Wear

Affected: Land Rover Defender 130 P400 (3.0L I6 MHEV, 2022-present)
Typical failure mileage: 60,000-100,000 miles (or age-related)

Root cause

Plastic coolant fittings and water pump seals can degrade under high under-bonnet temperatures, leading to slow coolant loss and potential overheating if ignored.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£1,200-£2,000	£800-£1,500
Full Replacement - rebuilt/reconditioned engine	£8,000-£12,000	£6,500-£10,000

Our recommendation

If the engine is fundamentally sound, addressing cooling components or the timing chain as preventative maintenance is highly cost-effective and preserves the original unit. However, if the vehicle has suffered severe overheating or exhibits deep mechanical knocking, a full reconditioned replacement is the only reliable path to protect your investment.

Timing Chain Tensioner Stretch

Affected: Land Rover Defender 130 P400 (3.0L I6 MHEV, 2022-present)
Typical failure mileage: 80,000+ miles

Root cause

High cylinder pressures and thermal cycling can cause premature wear on the timing chain guides and tensioners, resulting in a rattling noise at cold start.

Repair options

Repair tier	Dealer price	Specialist price
Chain Kit Replacement	£2,000-£3,500	£1,500-£2,500
Full Replacement - rebuilt/reconditioned engine	£8,000-£12,000	£6,500-£10,000

Our recommendation

-> Compare rebuilt P400 Land Rover Defender 130 P400 engine prices

Don't Let Engine Failure Write Off Your Land Rover Defender 130 P400

Protect your high-performance investment with a rebuilt engine that features upgraded components and a comprehensive 12-month unlimited-mileage warranty. By comparing quotes from our vetted UK specialist network, you avoid main dealer premiums while securing nationwide supply and fit options tailored to your exact Land Rover Defender 130 P400.

Compare Land Rover Defender 130 P400 Engine Replacement Prices Now ->

FAQ

Land Rover Defender 130 P400 Engine ReplacementFrequently Asked Questions

Everything Land Rover Defender 130 P400 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A reconditioned or rebuilt Land Rover Defender 130 P400 engine typically costs between £4,500 and £10,000 for the supply-only unit, depending on the level of rebuild and specialist documentation provided.

Rebuilt units include upgraded cooling components and timing chain checks.
Supply and fit packages are available through our premium specialist network.

-> Compare Land Rover Defender 130 P400 engine replacement prices

Early detection is critical to preventing catastrophic damage to your Land Rover Defender 130 P400 engine.

Look for unexplained coolant loss, sudden overheating warnings, or a distinct rattling noise from the front of the engine at cold start.
Sweet-smelling exhaust smoke or oil contamination are also strong indicators of internal failure.

-> Get a diagnostic quote for your Land Rover Defender 130 P400

Yes, given the strong retained values of the L663 Defender 130, replacing the engine is a highly sound financial decision.

A typical 2022+ model is valued between £65,000 and £95,000+, making a £6,500-£10,000 rebuild a small percentage of the vehicle's worth.
A rebuilt engine with a 12-month warranty adds reliability and protects your premium asset.

-> Check Land Rover Defender 130 P400 rebuild viability

While the L663 chassis was designed with multiple powertrain options, a retrofit is not straightforward.

The P400 3.0L MHEV requires extensive ECU mapping, bespoke wiring harnesses, and upgraded cooling systems to function correctly and pass MOT.
We strongly recommend sticking to a like-for-like replacement to ensure guaranteed compatibility, reliability, and warranty coverage.

-> Get quotes for a compatible Land Rover Defender 130 P400 engine

Why Choose Us

Compare Land Rover Defender 130 P400 Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Land Rover Defender 130 P400 and its specific 3.0L I6 MHEV engine code, connecting you directly with vetted UK premium Land Rover specialists.

100+100+ Premium inline-6 engines supplied through our network

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Compare quotes from trusted UK Land Rover Defender 130 P400 engine specialists with warranty-backed rebuilt, reconditioned and used options nationwide.