
D250 to D300 Power Upgrade
D250 to D300 power upgrade for the Land Rover Defender (L663).
A professional software upgrade that takes your D250 Ingenium diesel up to D300 output. You get more power and more torque throughout the rev range, with the same smooth delivery and drivability you would expect from the factory calibration.
What it gives you
- Higher power and torque than standard D250 output
- Stronger acceleration and more confident overtaking
- Improved pulling power for towing and running fully loaded
- Smooth, progressive delivery in keeping with the factory calibration
- Software only, no mechanical changes required
Ideal for
- Towing caravans, trailers and plant
- Off-road use and heavily loaded running
- Drivers who want stronger response without changing vehicle
Fitment
Land Rover Defender (L663) fitted with the D250 engine. If you are unsure of your vehicle's specification, contact us with your VIN before ordering and we will confirm.
Fits these vehicles

FAQ
Commonly asked questions for your convenience.
CAN I FINANCE MY ORDER?
Yes. We offer a range of finance options allowing you to spread the cost over time that suits you.
We offer Klarna and ClearPay for split weekly payments.
Klarna also offer longer term instalment plans.
WHATS YOUR RETURN POLICY?
Due to the custom nature of our products, all seats are non-returnable.
Our other products such the likes of Van Guard are only returnable if your product arrives damaged.
If you have any concerns, please get in touch with us directly through sales@pro-van.co.uk
WHERE DO YOU SHIP?
We ship to mainland UK. Northern Ireland shipping is not possible and all orders made to here will be refunded automatically.
WHY DO LEAD TIMES VARY SO MUCH?
Some of our products are custom made to order therefore lead times can vary.
For a better estimate of lead time on a specific product, please get in touch with our sales team at sales@pro-van.co.uk.
DOES MY PRODUCT COME WITH A WARRANTY?
Warranty terms and periods change dependent on manufacturer.
Please speak to a member of our team via email at sales@pro-van.co.uk if you have any questions or concerns.
CAN YOU INSTALL MY PRODUCTS FOR ME?
Yes. Our conversion packages are priced with the fitting included, carried out by our own engineers at our workshop in Chelmsford, Essex.
We can also fit on site at your address. On-site work is arranged by enquiry and a travel charge applies based on your zone, so send us your postcode and we will confirm the options.
Fitting on our other products can be quoted on request. Email sales@pro-van.co.uk or call 01245 392225.

