Land Rover Fitment & Engine Identification Hub

Q: What is the difference between 204DTD and 204PT?

Both are 2.0‑litre Ingenium engines. The 204DTD is the diesel version, while the 204PT is the petrol version. They are not interchangeable. Our Ingenium identification page helps you tell them apart.

This hub brings together all our Land Rover engine fitment and identification resources in one place. Whether you need to decode your engine code, confirm which engine is correct for your vehicle, or identify an Ingenium variant, you'll find the answers here.

7 fitment guides — covering the most‑enquired Land Rover engines, from the 204PT to the 368DT and the AJ20D6
Engine code decoder — understand what your engine code means and where to find it
Ingenium identification — distinguish between diesel (204DTD/AJ20D6) and petrol (204PT/AJ20P6) variants
Full fitment matrix — see every engine and the models it was fitted to

Use the index below to jump to the guide you need, or start with the Engine Code Decoder if you're unsure where to begin.

Full Fitment & Identification Index

Every fitment guide and identification tool we publish — browse by engine or topic.

🔢

Engine Code Decoder

Understand your engine code and where to find it

🧩

Ingenium Identification

Distinguish diesel vs petrol Ingenium engines

📊

Full Fitment Matrix

Every engine and every model it was fitted to

⛽

204PT (2.0 Petrol)

Petrol Ingenium fitment guide

🛢️

AJ20D6 (3.0 Diesel)

Straight‑six diesel fitment guide

💨

368DT (3.6 TDV8)

V8 diesel fitment guide

🏁

448DT (4.4 SDV8)

The durable V8 diesel fitment guide

Each fitment page includes a detailed fitment matrix, how to confirm which engine you have, and why correct identification matters when buying a replacement. If you need a guide that isn't listed, contact us and we will consider adding it.

How to Identify Your Land Rover Engine

The fastest way to confirm which engine is in your Land Rover is to check the engine code stamped on the engine block or use your VIN. Here's what to do:

Check the engine code label — open the bonnet and look for the code on the timing cover or cylinder head. It will be something like 204DTD, 306DT, or 204PT.
Decode your VIN — the VIN contains engine information. Use our engine code decoder to interpret the characters.
Use the Ingenium identification guide — if you have a 2.0‑litre engine, our Ingenium identification page will help you tell diesel from petrol.
Check your V5C logbook — the engine number is listed, which you can cross‑reference with our fitment matrix.

If you still aren't sure, our registration lookup tool can pull your vehicle details from the registration number and confirm the engine code.

Why Correct Fitment Matters When Buying a Replacement

Installing the wrong engine into a Land Rover can be an expensive and frustrating mistake. Here are the key reasons why accurate fitment is essential:

ECU compatibility — the engine control unit is coded to the specific engine family and power output. An incorrect match can lead to poor running, warning lights, or a non‑starting vehicle.
Mounting and ancillary differences — even within the same engine family, auxiliaries (turbo, injectors, wiring looms) may differ. The physical block might fit, but ancillaries often don't.
Emissions and legal compliance — fitting an engine not originally homologated for your chassis can cause MOT or insurance problems. Always check that the replacement engine matches the emissions class of your vehicle.
Specialist support and warranty — most vetted JLR specialists will refuse to fit mismatched engines. Warranty on a reconditioned unit may be void if the engine isn't correctly coded to the vehicle.

Using our fitment guides and the full fitment matrix before you buy ensures you get the right engine the first time. For cost guidance, see the replacement cost by engine code page.

Frequently Asked Questions

How do I find my Land Rover engine code?

Open the bonnet and look for a label on the timing cover or cylinder head. The code is usually stamped or printed clearly. If you can't find it, use our engine code decoder which includes location diagrams.

What is the difference between 204DTD and 204PT?

Both are 2.0‑litre Ingenium engines. The 204DTD is the diesel version, while the 204PT is the petrol version. They are not interchangeable. Our Ingenium identification page helps you tell them apart.

Can I fit a used engine from a different model?

It depends. The engine block may be the same across models, but ancillaries, ECU calibration, and emissions equipment often differ. Always consult a specialist and check our fitment matrix to confirm compatibility.

How do I know if my replacement engine is correctly coded?

Your specialist should use Jaguar Land Rover diagnostic equipment (or equivalent) to program the ECU to the replacement engine's specification. Without this, the engine may not run correctly. Our engine code guide explains what to look for.

Our Verdict — Get the Fitment Right First Time

"Correct engine identification is the single most important step before buying a replacement Land Rover engine."

Using our fitment hub eliminates guesswork. Every guide is built on real 2025 enquiry data and verified by our specialist panel. Whether you're decoding your engine code, identifying an Ingenium, or checking the full fitment matrix, you can be confident you're getting the right answer.

If you're unsure, use the engine compatibility checker or registration lookup to confirm your vehicle details before purchasing a replacement engine.

CHECK COMPATIBILITY → REGISTRATION LOOKUP

✓

7 Fitment GuidesCovers the most‑enquired Land Rover engines.

✓

Verified Against OEM SpecsEvery fitment claim is checked against manufacturer data.

✓

12 Vetted JLR SpecialistsReal‑world advice from specialists who rebuild these engines.

✓

100% IndependentNo manufacturer influence; we own our data.

Get the Right Engine for Your Land Rover

Start with the engine code decoder or the full fitment matrix — and compare quotes from vetted specialists when you're ready.

ENGINE CODE DECODER → FULL FITMENT MATRIX