Land Rover Discovery TD5 Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Land Rover Discovery TD5 engine specialists. Compare prices on reconditioned, rebuilt and used engines to restore your classic 4x4's legendary reliability and off-road capability.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £1,500 to £3,500 [THIRD-PARTY]
Used from £800 · Reconditioned from £1,500 · Common codes: TD5 10P, TD5 15P
From £800
Tested, bare/short engine
From £1,500
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Land Rover Discovery TD5 specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Land Rover Discovery TD5 Replacement Engineto Finding the Best Land Rover Discovery TD5 Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryLand Rover Discovery TD5 - Engine History & Specs at a Glance
Launched in 1998, the Land Rover Discovery TD5 (Series II) replaced the rugged 200Tdi with a more refined, electronically controlled 2.5-litre inline-five diesel, offering improved emissions and drivability while retaining legendary off-road capability.
Variant HistoryLand Rover Discovery TD5 - Engine History & Specs at a Glance
Launched in 1998, the Land Rover Discovery TD5 (Series II) replaced the rugged 200Tdi with a more refined, electronically controlled 2.5-litre inline-five diesel, offering improved emissions and drivability while retaining legendary off-road capability.
Land Rover Discovery TD5
Fuel TypeDiesel
Engine Size Range2.5L
Power Output Range122hp across the variant's historyEngine History Timeline
TD5 10P (2.5L Diesel) 122hp, launched in the Discovery Series II, featuring electronic injection and improved refinement over the outgoing 200Tdi.
TD5 15P (2.5L Diesel) 122hp, introduced with revised engine management, an updated injector harness (to prevent oil migration to the ECU), and steel locating dowels to prevent head gasket failure.
Key Specs Snapshot
Fuel TypeDieselEngine Size Range2.5LPower Output Range122hp across the variant's historyYears Produced1998-2004Every engine fitted to the Land Rover Discovery TD5 is covered below, with UK rebuilt pricing and known failure points.
Land Rover Discovery TD5 Engine Codes - Specifications & Replacement CostLand Rover Discovery TD5 Engine Codes - Specifications & Replacement Cost
2.5L Diesel (1998-2002)
Power Output122hpYears Fitted1998-2002
Compatible Trim Levels
- Discovery TD5 S
- Discovery TD5 SE
- Discovery TD5 ES
- Discovery TD5 GS
- Discovery TD5 Commercial
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£800-£1,500
Reconditioned
Addressed known issues, tested
£1,500-£2,500
Rebuilt
Full teardown, upgraded internals
£2,500-£4,000
Common Failure
Injector loom oil leak leading to ECU contamination, and head gasket failure due to deforming plastic locating dowels under thermal stress.
The 2.5L TD5 in the Land Rover Discovery TD5 is a robust, torque-rich workhorse. However, two well-documented factory flaws require attention: injector loom oil leaks and plastic head gasket dowels. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, backed by a minimum 12-month unlimited-mileage warranty.
Why the Land Rover Discovery TD5 Requires Upgrades
Affected Vehicles
Land Rover Discovery TD5 (TD5 10P / 15P, 1998-2004)
Typical Failure Mileage
80,000-150,000 miles
Root Cause
Land Rover originally used plastic locating dowels to align the cylinder head. Over time and repeated heat cycles, these plastic dowels deform and collapse, allowing the head to shift slightly under combustion pressures, which inevitably blows the head gasket.
Why It Happens
Land Rover originally used plastic locating dowels to align the cylinder head. Over time and repeated heat cycles, these plastic dowels deform and collapse, allowing the head to shift slightly under combustion pressures, which inevitably blows the head gasket.
Dealer (parts + labour)
£1,800-£2,500
Specialist (parts + labour)
£1,200-£1,800
What it involves
Head removal, skim, new gasket, and mandatory fitment of aftermarket steel locating dowels
Suitability
Highly suitable if the block and head are undamaged; the definitive fix
1 - 2 daysDealer (parts + labour)
£3,500-£5,500
Specialist (parts + labour)
£2,500-£4,000 [THIRD-PARTY]
What it involves
Supply & fit of a rebuilt TD5 with steel dowels, upgraded head studs, and 12-month warranty
Suitability
The right call if the engine has suffered hydro-lock, severe overheating, or bottom-end knock
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Preventative Head Gasket & Steel Dowel Upgrade Minor | £1,800-£2,500 | £1,200-£1,800 | Head removal, skim, new gasket, and mandatory fitment of aftermarket steel locating dowels | Highly suitable if the block and head are undamaged; the definitive fix | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £3,500-£5,500 | £2,500-£4,000 [THIRD-PARTY] | Supply & fit of a rebuilt TD5 with steel dowels, upgraded head studs, and 12-month warranty | The right call if the engine has suffered hydro-lock, severe overheating, or bottom-end knock | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A classic Land Rover Discovery TD5 currently holds a UK market value of £2,500 to £7,000+ depending on condition, chassis rust, and originality [THIRD-PARTY]. At this valuation, a rebuilt engine replacement cost can represent a significant portion of the vehicle's value, making careful evaluation essential. If the lowest viable replacement cost exceeds approximately 60% of the vehicle's current market value, evaluate scrap value before committing.
Our Recommendation
Our Recommendation
If caught before catastrophic mixing of fluids, a specialist head gasket replacement paired with the mandatory steel dowel upgrade is the most cost-effective and permanent route. However, if the engine has been run with low coolant or exhibits bottom-end bearing knock, investing in a fully rebuilt unit is the safest way to guarantee the next 100,000 miles of reliability.
Don't Let Engine Failure Write Off Your Land Rover Discovery TD5
Protect your classic workhorse with a fully rebuilt Land Rover Discovery TD5 engine. Our network supplies units with upgraded steel dowels and sealed injector looms that address known factory weaknesses, backed by a minimum 12-month unlimited-mileage warranty and nationwide delivery. Avoid main dealer premiums by comparing transparent, itemised quotes from vetted UK classic Land Rover specialists today.
Compare rebuilt TD5 10P Land Rover Discovery TD5 engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Land Rover Discovery TD5. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Land Rover Discovery TD5 Engine ReplacementFrequently Asked Questions
Question 1How much does a Land Rover Discovery TD5 engine replacement cost-
A complete rebuilt Land Rover Discovery TD5 engine typically costs between £2,500 and £4,000 for supply only [THIRD-PARTY].
- Used runner units start from around £800.
- Reconditioned units range from £1,500 to £2,500.
- Prices vary based on the specific TD5 10P or 15P engine code and inclusion of steel dowel upgrades.
Question 2What are the signs of head gasket failure in a Discovery TD5-
Early warning signs of the plastic dowel head gasket failure include unexplained coolant loss without visible external leaks.
- Mayonnaise-like sludge under the oil filler cap.
- White exhaust smoke under heavy load or during cold starts.
- Overheating during slow off-road or towing work.
Question 3Is it worth replacing the engine in a classic Land Rover Discovery TD5-
Yes, for well-maintained examples. The Land Rover Discovery TD5 is a highly capable classic 4x4 with current market values ranging from £2,500 to over £7,000 [THIRD-PARTY].
- A rebuilt engine cost is a sensible fraction of the vehicle's total value if the chassis is solid.
- It preserves the car's heritage, heavy-duty towing capability, and resale value.
- Upgraded rebuilt units eliminate the factory plastic dowel flaw permanently.
Question 4What is the difference between the TD5 10P and 15P engines-
The TD5 10P (1998-2002) is the original version of the 2.5L inline-five diesel.
- The TD5 15P (2002-2004) introduced revised engine management, an updated sealed injector harness to prevent ECU oil contamination, and factory-fitted steel locating dowels to prevent head gasket failure.
- Both share the same robust bottom end and benefit equally from reliability upgrades.
Question 5Do rebuilt TD5 engines include the steel dowel and injector loom upgrades-
Yes, any reputable specialist rebuilding a Land Rover Discovery TD5 engine will machine the block to accept aftermarket steel locating dowels and fit an updated, sealed injector harness.
- This entirely eliminates the plastic dowel deformation and ECU oil contamination issues.
- It ensures the cylinder head remains perfectly aligned under heavy towing loads.
- These upgrades are considered mandatory for any long-term TD5 build.
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