The Defender 300Tdi is a 2.5-litre four-cylinder diesel engine that was fitted to classic Defender 90, 110 and 130 models from roughly 1994 through to 2007. It replaced the earlier 200Tdi and ran alongside the Td5 for a period, depending on market and specification. Like its predecessor, the 300Tdi is mechanically simple and known for its durability — but the cylinder head is a known wear point, and the timing belt interval is critical to maintain. The engine was also used in the Discovery 1 and early Discovery 2, though the Defender application is the most widely recognised. The 300Tdi is no longer in production, but we continue to rebuild and replace engines for every one still on the road. Defender 300Tdi Engine Specifications 300Tdi A 2.5-litre inline-four diesel fitted to the Defender 300Tdi from approximately 1994 to 2007 (Classic 90/110/130). Known for cylinder head cracking and cooling system neglect over time — see the callout above. We inspect and replace the timing belt, cylinder head components and cooling system as standard on every 300Tdi rebuild, along with injectors and gaskets where needed. Check Your 300Tdi Defender → [link to quote form] Defender 300Tdi Engine Compatibility Because the classic Defender used several diesel engines across its long production run — 200Tdi, 300Tdi and Td5 — fitting the wrong replacement or assuming parts will interchange can create compatibility problems. Before we quote or supply anything, we confirm: Your exact engine code (200Tdi, 300Tdi or Td5) via registration or VIN Your chassis type (90, 110 or 130) Drivetrain and ancillary specification Any specific parts differences relevant to your exact build This is why we always start with your registration rather than a generic Defender quote — it protects you from paying for parts that don't fit your actual car. Defender 300Tdi Applications by Generation Generation Chassis Years Engine Code Fuel Classic 90/110/130 1994–2007 approx 300Tdi Diesel Defender 300Tdi Engines by Year Year Generation Chassis Engine Code Fuel Service 1994 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 1995 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 1996 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 1997 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 1998 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 1999 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2000 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2001 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2002 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2003 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2004 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2005 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2006 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement 2007 Classic 90/110/130 300Tdi Diesel Rebuild / Replacement The 300Tdi overlaps with the Td5 for a period, depending on market — if your registration falls in the later years, we'll confirm your exact engine code before quoting. We Cover Every Defender 300Tdi Model Year: ✓ Defender 300Tdi 1996 Engine Rebuild ✓ Defender 300Tdi 2000 Engine Rebuild ✓ Defender 300Tdi 2004 Engine Rebuild ✓ Defender 300Tdi 2007 Engine Rebuild If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg. Defender 300Tdi Engine Sizes ✓ Defender 300Tdi 2.5 Litre Engine (300Tdi, I4) Defender 300Tdi Fuel Types ✓ Defender 300Tdi Diesel Engine Rebuilds Defender 300Tdi Engine Costs A Defender 300Tdi engine rebuild starts from £1,900. A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required — submit your registration for a fixed-price quote within 30 minutes. Related Defender Variants Looking for a different Defender engine? We also cover: [Defender Td5 Engine →] · [Defender 200Tdi Engine →] · [Defender D200 Engine →] · [Defender D250 Engine →] · [Defender D300 Engine →] · [Defender P400 Engine →] [← View All Defender Engines] Frequently Asked Questions What engine does the Defender 300Tdi use? The Defender 300Tdi uses the 300Tdi — a 2.5-litre inline-four diesel engine, fitted to classic Defender 90, 110 and 130 models from approximately 1994 to 2007. How much does a Defender 300Tdi engine rebuild cost? Rebuilds start from £1,900. Exact price depends on condition and parts required — submit your reg for a fixed-price quote. Which engine code is fitted to my Defender? Enter your registration on this page and we'll confirm whether you have the 200Tdi, 300Tdi or Td5 before you're quoted anything. Do you rebuild 300Tdi Defender engines? Yes. We replace the timing belt and inspect the cylinder head and cooling system as standard on every 300Tdi rebuild, along with injectors and gaskets where needed. Do you supply used Defender 300Tdi engines? Yes, in some cases a matched low-mileage used engine is the right option. Our team will advise honestly once we've matched your registration and understood your situation. Can you recover my Defender if the engine has failed? Yes — nationwide recovery is available from £70, and most vehicles are collected within a few hours of booking. How long does a Defender 300Tdi engine rebuild take? Most rebuilds are completed within 3-5 working days from the time your car arrives at our workshop. Is rebuilding better than fitting a used engine? For most Defender 300Tdi owners, yes. A rebuild removes the compatibility risk that comes with an unknown used unit's history, and comes with a 12-month unlimited-mileage warranty — often longer and more comprehensive than what a used engine supplier offers. <a name="quote-form"></a> Get Your Free Defender 300Tdi Fixed-Price Quote [Quote Form: Registration Number | Postcode | Name | Phone | Email | Issue/Enquiry Type (dropdown: Engine Failure / Replacement Needed / General Enquiry) | Submit] Most quotes returned within 30 minutes during working hours. json { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://landrovergarage.co.uk#organization", "name": "Land Rover Garage", "url": "https://landrovergarage.co.uk", "email": "info@landrovergarage.co.uk", "telephone": "+44 01268 944 234", "sameAs": [ "https://facebook.com/landroverrebuildgarageuk", "https://twitter.com/landroverrebuildgarageuk", "https://instagram.com/landroverrebuildgarageuk", "https://tiktok.com/@landroverrebuildgarageuk" ] }, { "@type": "AutoRepair", "@id": "https://landrovergarage.co.uk#autorepair", "name": "Land Rover Garage — Defender 300Tdi Engine Rebuild Specialists", "url": "https://landrovergarage.co.uk/defender-300tdi-engines", "telephone": "+44 01268 944 234", "email": "info@landrovergarage.co.uk", "priceRange": "££", "address": { "@type": "PostalAddress", "streetAddress": "Unit A5 Windsor Road, Commercial Estate, Ramsden Heath", "addressLocality": "Billericay", "postalCode": "CM11 1QE", "addressCountry": "GB" }, "openingHours": "Mo-Fr 09:00-18:00, Sa 11:00-14:00", "areaServed": "GB", "parentOrganization": { "@id": "https://landrovergarage.co.uk#organization" }, "brand": { "@type": "Brand", "name": "Land Rover" } }, { "@type": "Service", "serviceType": "Land Rover Defender 300Tdi Engine Rebuild & Replacement", "provider": { "@type": "AutoRepair", "name": "Land Rover Garage" }, "areaServed": "GB", "offers": { "@type": "Offer", "priceCurrency": "GBP", "price": "1900", "description": "Land Rover Defender 300Tdi engine rebuild starting price" } }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What engine does the Defender 300Tdi use?", "acceptedAnswer": { "@type": "Answer", "text": "The Defender 300Tdi uses the 300Tdi — a 2.5-litre inline-four diesel engine, fitted to classic Defender 90, 110 and 130 models from approximately 1994 to 2007." } }, { "@type": "Question", "name": "How much does a Defender 300Tdi engine rebuild cost?", "acceptedAnswer": { "@type": "Answer", "text": "Rebuilds start from £1,900. 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We continue to rebuild and replace 300Tdi engines for every Defender 300Tdi on the road.