{"id":118,"date":"2026-08-19T12:41:31","date_gmt":"2026-08-19T12:41:31","guid":{"rendered":"https:\/\/www.reconditionedjlrengine.co.uk\/news\/?p=118"},"modified":"2026-08-19T12:41:32","modified_gmt":"2026-08-19T12:41:32","slug":"range-rover-3-0-si6-engine-replacement-cost-uk","status":"publish","type":"post","link":"https:\/\/www.reconditionedjlrengine.co.uk\/news\/range-rover-3-0-si6-engine-replacement-cost-uk\/","title":{"rendered":"How Much Does a Range Rover 3.0 Petrol Si6 Engine Cost to Replace?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If your <a href=\"https:\/\/www.reconditionedjlrengine.co.uk\/range-rover-engines\"><strong>Range Rover 3.0 engine<\/strong><\/a> badged Si6 has developed a timing chain rattle, supercharger whine, or lost power entirely, you are probably weighing up how much a proper replacement will cost in the UK. At Reconditioned JLR Engine in Grays, we supply, rebuild, and fit these units every week, so this guide breaks down real pricing, specifications, common faults, and exactly how our supply and fit services work from enquiry through to road test.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Range Rover 3.0 Si6 Engine Overview<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Range Rover 3.0 Si6<\/strong> is the supercharged V6 petrol engine, factory engine code AJ126, fitted to the Range Rover L405 and Range Rover Sport L494 as the mid-range petrol option below the 5.0 V8. It shares its core architecture with Jaguar&#8217;s AJ126 supercharged V6, using a Roots-type supercharger and an all-aluminium block to deliver strong performance with a smoother power delivery than the diesel range. As one of the more complex <a href=\"https:\/\/www.reconditionedjlrengine.co.uk\/range-rover-engines\"><strong>Range Rover engine<\/strong><\/a> units on UK roads, the Si6 needs careful diagnosis before committing to a full engine replacement, since several common faults can be repaired without swapping the whole unit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Range Rover 3.0 Si6 Engine Specifications<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The AJ126 supercharged V6 is a 2,995cc engine producing between 340 bhp and 380 bhp depending on the tune, with torque figures around 450 Nm delivered from low in the rev range thanks to the supercharger. It uses dual overhead camshafts, direct injection, a charge cooler intercooler, and a timing chain with hydraulic tensioners rather than a belt. Every <strong>Range Rover 3.0 engine<\/strong> and <strong>Range Rover engine for sale<\/strong> we supply is checked and code-matched against your VIN before dispatch to guarantee an exact fit. The table below sets out the full 3.0-litre Range Rover engine family across both generations, covering the supercharged Si6 petrol, the older TDV6\/SDV6 diesels, and the newer Ingenium inline-six diesel and petrol units, so you can confirm the exact variant fitted to your vehicle before you buy or shop for a replacement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Table:<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Model Variant<\/strong><\/td><td><strong>Engine Code<\/strong><\/td><td><strong>Displacement<\/strong><\/td><td><strong>Fuel Type<\/strong><\/td><td><strong>Aspiration<\/strong><\/td><td><strong>Power Output<\/strong><\/td><td><strong>Torque<\/strong><\/td><td><strong>0-60mph<\/strong><\/td><td><strong>Transmission<\/strong><\/td><td><strong>Fitted To<\/strong><\/td><td><strong>Approx. Years<\/strong><\/td><\/tr><tr><td>3.0 Si6 Standard<\/td><td>AJ126<\/td><td>2,995cc<\/td><td>Petrol<\/td><td>Supercharged V6<\/td><td>340bhp<\/td><td>450Nm<\/td><td>6.5s<\/td><td>8-speed auto<\/td><td>Range Rover L405<\/td><td>2013-2017<\/td><\/tr><tr><td>3.0 Si6 HSE<\/td><td>AJ126<\/td><td>2,995cc<\/td><td>Petrol<\/td><td>Supercharged V6<\/td><td>340bhp<\/td><td>450Nm<\/td><td>6.9s<\/td><td>8-speed auto<\/td><td>Range Rover Sport L494<\/td><td>2013-2018<\/td><\/tr><tr><td>3.0 Si6 Autobiography<\/td><td>AJ126<\/td><td>2,995cc<\/td><td>Petrol<\/td><td>Supercharged V6<\/td><td>380bhp<\/td><td>450Nm<\/td><td>6.3s<\/td><td>8-speed auto<\/td><td>Range Rover Sport L494<\/td><td>2016-2018<\/td><\/tr><tr><td>3.0 TDV6<\/td><td>306DT<\/td><td>2,993cc<\/td><td>Diesel<\/td><td>Twin-turbo V6<\/td><td>254-258bhp<\/td><td>600Nm<\/td><td>7.9s<\/td><td>8-speed auto<\/td><td>Range Rover L405, Sport L494<\/td><td>2013-2017<\/td><\/tr><tr><td>3.0 SDV6<\/td><td>306DT<\/td><td>2,993cc<\/td><td>Diesel<\/td><td>Twin-turbo V6<\/td><td>288bhp<\/td><td>600Nm<\/td><td>7.1s<\/td><td>8-speed auto<\/td><td>Range Rover L405, Sport L494<\/td><td>2013-2022<\/td><\/tr><tr><td>3.0 SDV6 HSE Dynamic<\/td><td>306DT<\/td><td>2,993cc<\/td><td>Diesel<\/td><td>Twin-turbo V6<\/td><td>306bhp<\/td><td>700Nm<\/td><td>6.9s<\/td><td>8-speed auto<\/td><td>Range Rover Sport L494<\/td><td>2015-2022<\/td><\/tr><tr><td>D250 (Ingenium I6 MHEV)<\/td><td>306DT (I6)<\/td><td>2,996cc<\/td><td>Diesel<\/td><td>Turbo inline-six<\/td><td>246bhp<\/td><td>570Nm<\/td><td>7.1s<\/td><td>8-speed auto<\/td><td>Range Rover L460, Sport L461<\/td><td>2021-present<\/td><\/tr><tr><td>D300 (Ingenium I6 MHEV)<\/td><td>306DT (I6)<\/td><td>2,996cc<\/td><td>Diesel<\/td><td>Turbo inline-six<\/td><td>296bhp<\/td><td>650Nm<\/td><td>6.4s<\/td><td>8-speed auto<\/td><td>Range Rover L460, Sport L461, Defender<\/td><td>2021-present<\/td><\/tr><tr><td>D350 (Ingenium I6 MHEV)<\/td><td>306DT (I6)<\/td><td>2,996cc<\/td><td>Diesel<\/td><td>Turbo inline-six<\/td><td>345bhp<\/td><td>700Nm<\/td><td>5.8s<\/td><td>8-speed auto<\/td><td>Range Rover L460, Sport L461<\/td><td>2022-present<\/td><\/tr><tr><td>P400 (Ingenium I6 MHEV)<\/td><td>306PT<\/td><td>2,997cc<\/td><td>Petrol<\/td><td>Turbo inline-six<\/td><td>395-400bhp<\/td><td>550Nm<\/td><td>5.5s<\/td><td>8-speed auto<\/td><td>Range Rover L460, Sport L461<\/td><td>2021-present<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The older AJ126 petrol and 306DT diesel units share the L405\/L494 platform and are the versions most commonly needing replacement or reconditioning on higher-mileage vehicles, while the newer Ingenium inline-six engines are the current-generation units fitted to the L460 Range Rover, L461 Range Rover Sport, and Defender. Always confirm your exact engine code, stamped on the block or shown on your V5C logbook and VIN, before ordering.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Range Rover 3.0 Si6 Engine Replacement Costs in the UK<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Engine replacement costs in UK garages for the Si6 vary depending on fault severity and the route you choose. A supplied and fitted used AJ126 engine typically starts from around \u00a33,800-\u00a35,500, a fully reconditioned unit with warranty usually runs \u00a36,500-\u00a39,500, and dealership-fitted new engines can exceed \u00a313,000-\u00a315,000 once labor and calibration are included. Labor, coolant, oil, gaskets, and diagnostics are usually included in a specialist supply and fit quote, whereas dealership pricing often adds these on separately. Getting a fix, all-inclusive quote before work begins protects you from surprise add-on charges once the vehicle is already stripp down for inspection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Reconditioned Engines vs Used Engines: Which Should You Choose?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing between <strong>reconditioned engines<\/strong> and used engines is the key decision most Si6 owners face once a fault is confirm. Used engines are remove from donor vehicles, tested for compression and general condition, and sold as-is, making them the cheaper short-term option but with less certainty over remaining lifespan, particularly around known timing chain wear. Reconditioned engines are fully stripp, inspect, and rebuilt with new pistons, bearings, timing chain kits, gaskets, and seals, giving significantly better long-term reliability and a genuine warranty. This is the real story behind reconditioned engines vs use engines: a use unit suits a tight budget, while a reconditioned engine suits owners planning to keep their Range Rover for years to come.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Our Supply and Fit Services and Engine Rebuild Process<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Our supply and fit services take the stress out of Si6 engine replacement from start to finish. Once you confirm your VIN and engine code, we source the correct used, reconditioned, or rebuilt AJ126 unit and arrange professional fitting through our approved network. Every engine rebuild follows a strict sequence: full strip-down, cylinder head inspection, new timing chain and tensioners, supercharger inspection, fresh gaskets and seals, and a complete compression test before the vehicle leaves the workshop. We handle old engine removal, calibration, and the final road test, so you simply book the vehicle in and collect it once everything is verified.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common Range Rover 3.0 Si6 Engine Problems and Solutions<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Timing chain and guide wear is the most reported fault, causing a rattle on cold start that worsens over time and can lead to internal damage if left unaddressed, usually resolved with a full timing chain kit replacement. Supercharger coupler wear produces a metallic knock at idle, often mistaken for a timing chain issue, and is fix with a coupler or snout rebuild. Coolant leaks from aging plastic housings and water pumps are common on higher-mileage examples and are address with a full cooling system service. Carbon build-up on the intake valves can cause rough idling and is typically resolve with a valve clean or service.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Nationwide Logistics and Delivery Across the UK<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.reconditionedjlrengine.co.uk\/\">reconditioned JLR engine<\/a> is based in Grays, Essex, with quick access to the M25, A13, and Dartford Crossing for fast nationwide logistics. We run a dedicated courier network delivering used, reconditioned and rebuilt engines securely across England, Scotland, and Wales, with every unit palletised, protected, and tracked from despatch to your garage or driveway. If you would rather we handle the whole job, our supply and fit services include collection and delivery logistics as standard, keeping your Range Rover under professional care throughout. Local Grays and Essex customers can also book direct workshop drop-off for the fastest possible turnaround, and our logistics team is happy to advise on the best collection option for your Si6-powered vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Buy Your Range Rover Engine From a Reconditioned JLR Engine<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When you buy or shop for a <strong>Range Rover engine for sale<\/strong>, working with genuine JLR specialists matters more than chasing the cheapest listing online. Reconditioned JLR Engine tests every unit, code-matches it to your VIN, and backs reconditioned engines with a real warranty. We offer no upfront charges and no deposit required on qualifying orders, so you only pay once you are happy with the quote and scheduled work. Whether you want to buy a used AJ126 engine, shop for a reconditioned rebuild, or arrange full supply and fit, our Grays-based team is ready to guide you through the whole process with clear, honest pricing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Frequently Asked Questions<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>How much does a Range Rover 3.0 Si6 engine replacement cost?<\/strong>&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Prices typically range from \u00a33,800 for a used engine to \u00a39,500+ for a reconditioned unit, supplied and fitted.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What engine code does the Range Rover Si6 use?<\/strong>&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The Si6 supercharged V6 petrol uses engine code AJ126, a 2,995 cc supercharged unit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Is a reconditioned Si6 engine better than a used one?<\/strong>&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, reconditioned engines include new wear parts and a warranty, making them better long-term value.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Do I need to pay a deposit before work starts?<\/strong>&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No, the reconditioned JLR engine offers no upfront charges and no deposit required on qualifying orders.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Does Reconditioned JLR Engine deliver engines across the UK?<\/strong>&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, we operate nationwide logistics from our Grays base, covering England, Scotland, and Wales.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If your Range Rover 3.0 engine badged Si6 has developed a timing chain rattle, supercharger&#8230;<\/p>\n","protected":false},"author":1,"featured_media":119,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[11,30,8,12,9,6,10],"class_list":["post-118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-range-rover-problems-faults-common-issues-expert-fixes","tag-engine-replacement","tag-range-rover-3-0-engine","tag-range-rover-engine","tag-range-rover-engine-evoque","tag-range-rover-engine-for-sale","tag-reconditioned-jlr-engines","tag-reconditioned-range-rover-engine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Range Rover 3.0 Si6 Engine Replacement Cost UK<\/title>\n<meta name=\"description\" content=\"Buy a Range Rover 3.0 Si6 engine at Reconditioned JLR Engine, Grays. 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