The XJR has been part of the XJ range since 1994, and across its four generations has used three different supercharged engines — from the AJ16 inline‑six through to the AJ133S V8. The full breakdown by engine code is below. *The XJR is no longer in production, but we continue to rebuild and replace engines for every one still on the road.* Jaguar XJR Engine Codes AJ16 (X300) A 4.0‑litre supercharged inline‑six fitted to the XJR from 1994 to 1997 (X300 generation). This was the last of the classic Jaguar six‑cylinder engines before the switch to V8s. No specific known issue pattern is independently confirmed for this application, but we rebuild it to the same standard as our other XJR engines. Check Your AJ16 XJR → [link to quote form] AJ‑V8 Supercharged (X308 / X350) A 4.0‑litre (X308, 1997–2003) or 4.2‑litre (X350, 2002–2009) supercharged V8. This family powered the XJR through two generations and is generally robust, though we always inspect timing chain components and gaskets during a rebuild. Check Your AJ‑V8 XJR → [link to quote form] AJ133S (X351) The 5.0‑litre supercharged V8 fitted to the XJR from 2009 to 2019. Known for the timing chain tensioner and guide design flaw, plus water pump bearing/seal failure (see the callout above). We replace the timing chain, tensioners, guides and water pump as standard on every AJ133S rebuild. Check Your AJ133S XJR → [link to quote form] Jaguar XJR Engine Compatibility Because the XJR spans three distinct supercharged engines across four generations, fitting the wrong replacement — or assuming an earlier engine's parts will work on a later car — risks a compatibility problem that's expensive to unpick. Before we quote or supply anything, we confirm: - Your exact engine code (AJ16, AJ‑V8 or AJ133S) via registration or VIN - Your generation (X300, X308, X350 or X351) - Drivetrain and ancillary specification - Any electronics or ECU considerations specific to your exact build This is why we always start with your registration rather than a generic XJR quote — it protects you from paying for parts that don't fit your actual car. Jaguar XJR Applications by Generation Generation Chassis Years Engine Code Fuel X300 X300 1994–1997 AJ16 Petrol Supercharged X308 X308 1997–2003 AJ‑V8 Petrol Supercharged X350 X350 2002–2009 AJ‑V8 Petrol Supercharged X351 X351 2009–2019 AJ133S Petrol Supercharged Jaguar XJR Engines by Year Year Generation Engine Code Fuel Service 1994 X300 AJ16 Petrol Supercharged Rebuild / Replacement 1995 X300 AJ16 Petrol Supercharged Rebuild / Replacement 1996 X300 AJ16 Petrol Supercharged Rebuild / Replacement 1997 X300 / X308 AJ16 / AJ‑V8 Petrol Supercharged Rebuild / Replacement 1998 X308 AJ‑V8 Petrol Supercharged Rebuild / Replacement 1999 X308 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2000 X308 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2001 X308 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2002 X308 / X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2003 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2004 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2005 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2006 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2007 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2008 X350 AJ‑V8 Petrol Supercharged Rebuild / Replacement 2009 X350 / X351 AJ‑V8 / AJ133S Petrol Supercharged Rebuild / Replacement 2010 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2011 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2012 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2013 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2014 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2015 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2016 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2017 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2018 X351 AJ133S Petrol Supercharged Rebuild / Replacement 2019 X351 AJ133S Petrol Supercharged Rebuild / Replacement *1997, 2002 and 2009 were transition years between generations — if your registration falls in any of these, we'll confirm your exact engine code before quoting.* We Cover Every Jaguar XJR Model Year: ✓ Jaguar XJR 1996 Engine Rebuild ✓ Jaguar XJR 2000 Engine Rebuild ✓ Jaguar XJR 2005 Engine Rebuild ✓ Jaguar XJR 2012 Engine Rebuild ✓ Jaguar XJR 2018 Engine Rebuild If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg. Jaguar XJR Engine Sizes ✓ Jaguar XJR 4.0 Litre Engine (AJ16, X300) ✓ Jaguar XJR 4.0 Litre Engine (AJ‑V8, X308) ✓ Jaguar XJR 4.2 Litre Engine (AJ‑V8, X350) ✓ Jaguar XJR 5.0 Litre Engine (AJ133S, X351) Jaguar XJR Fuel Types ✓ Jaguar XJR Petrol Supercharged Engine Rebuilds Jaguar XJR Engine Costs A Jaguar XJR engine rebuild starts from £5,500 for the supercharged V8 models (AJ‑V8 and AJ133S). Pricing for the early AJ16 supercharged inline‑six is confirmed on registration. 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 Jaguar XJ Variants Looking for a different XJ engine? We also cover: [Jaguar XJ6 Engine →] · [Jaguar XJ8 Engine →] · [Jaguar XJ 3.0d Engine →] · [Jaguar XJ 3.0 V6 Supercharged Engine →] · [Jaguar XJ 5.0 V8 Engine →] · [Jaguar XJ Super V8 Engine →] [← View All Jaguar XJ Engines] Frequently Asked Questions What engine does the Jaguar XJR use? It depends on the generation. The X300 (1994‑1997) uses the AJ16 4.0‑litre supercharged inline‑six. The X308 (1997‑2003) uses a 4.0‑litre supercharged V8 (AJ‑V8). The X350 (2002‑2009) uses a 4.2‑litre supercharged V8 (AJ‑V8). The X351 (2009‑2019) uses the 5.0‑litre supercharged V8 (AJ133S). Send us your registration and we'll confirm which one your car has. How much does a Jaguar XJR engine rebuild cost? Rebuilds for the supercharged V8 models start from £5,500. Pricing for the early AJ16 is confirmed on registration — submit your reg for a fixed‑price quote. Which engine code is fitted to my XJR? Enter your registration on this page and we'll confirm whether you have the AJ16, AJ‑V8 or AJ133S before you're quoted anything. Do you rebuild AJ133S XJR engines? Yes. We replace the timing chain, tensioners, guides and water pump as standard on every AJ133S rebuild. Do you rebuild AJ‑V8 supercharged XJR engines? Yes. We inspect and replace worn components as part of the rebuild, though this engine family does not share the AJ133S timing chain design flaw. Do you rebuild AJ16 XJR engines? Yes. We rebuild the early supercharged six‑cylinder to the same standard as our V8 work. Do you supply used XJR 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 XJR 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 an XJR 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 XJR 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 Jaguar XJR 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://jaguargarage.uk#organization", "name": "Jaguar Garage", "url": "https://jaguargarage.uk", "email": "info@jaguargarage.uk", "telephone": "+44 01268 944 234", "sameAs": [ "https://facebook.com/jaguarrebuildgarageuk", "https://twitter.com/jaguarrebuildgarageuk", "https://instagram.com/jaguarrebuildgarageuk", "https://tiktok.com/@jaguarrebuildgarageuk" ] }, { "@type": "AutoRepair", "@id": "https://jaguargarage.uk#autorepair", "name": "Jaguar Garage – XJR Engine Rebuild Specialists", "url": "https://jaguargarage.uk/jaguar-xjr-engines", "telephone": "+44 01268 944 234", "email": "info@jaguargarage.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://jaguargarage.uk#organization" }, "brand": { "@type": "Brand", "name": "Jaguar" } }, { "@type": "Service", "serviceType": "Jaguar XJR Engine Rebuild & Replacement", "provider": { "@type": "AutoRepair", "name": "Jaguar Garage" }, "areaServed": "GB", "offers": { "@type": "AggregateOffer", "priceCurrency": "GBP", "lowPrice": "5500", "highPrice": "6500", "description": "Jaguar XJR engine rebuild starting price, supercharged V8 models" } }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What engine does the Jaguar XJR use?", "acceptedAnswer": { "@type": "Answer", "text": "It depends on the generation. The X300 (1994‑1997) uses the AJ16 4.0‑litre supercharged inline‑six. The X308 (1997‑2003) uses a 4.0‑litre supercharged V8 (AJ‑V8). The X350 (2002‑2009) uses a 4.2‑litre supercharged V8 (AJ‑V8). The X351 (2009‑2019) uses the 5.0‑litre supercharged V8 (AJ133S)." } }, { "@type": "Question", "name": "How much does a Jaguar XJR engine rebuild cost?", "acceptedAnswer": { "@type": "Answer", "text": "Rebuilds for the supercharged V8 models start from £5,500. Pricing for the early AJ16 is confirmed on registration — submit your reg for a fixed‑price quote." } }, { "@type": "Question", "name": "Which engine code is fitted to my XJR?", "acceptedAnswer": { "@type": "Answer", "text": "Enter your registration on this page and we'll confirm whether you have the AJ16, AJ‑V8 or AJ133S before you're quoted anything." } }, { "@type": "Question", "name": "Do you rebuild AJ133S XJR engines?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We replace the timing chain, tensioners, guides and water pump as standard on every AJ133S rebuild." } }, { "@type": "Question", "name": "Do you rebuild AJ‑V8 supercharged XJR engines?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We inspect and replace worn components as part of the rebuild, though this engine family does not share the AJ133S timing chain design flaw." } }, { "@type": "Question", "name": "Do you rebuild AJ16 XJR engines?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We rebuild the early supercharged six‑cylinder to the same standard as our V8 work." } }, { "@type": "Question", "name": "Do you supply used XJR engines?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, in some cases a matched low‑mileage used engine is the right option. 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We continue to rebuild and replace engine engines for every XJR on the road.