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Land Rover Defender 90 / 110 / 130
Power hp
Torque Nm
Displacement L
Layout
Swap overview with verified parts, part numbers and sources.
M57 in Land Rover Defender.
Documented from 31 recorded sources: 5 of the ten mandatory blocks are carried by two independent publishers, 2 remain open. Internal confidence 76%.
The M57 is a 3.0 litre inline-six common-rail turbodiesel. A German engine reference dates the start of production to July 1998 in Steyr, Austria, and names a Bosch CP3 high-pressure pump with a maximum rail pressure of 1600 bar. One documented Defender build gives 180 bhp in the donor and roughly 240 bhp after a stage 1 map in the converted vehicle. No source read here gives torque, compression ratio or weight for a specific 306Dx code, so those are not stated.
Status: SUPPORTED · Confidence 62%
Turbocharged diesel with intercooler. Two suppliers treat the turbo as a variable rather than a constant: one states that E39/E46 M57 variants require the turbo from a TD6 or X5 E53 for this installation, the other notes that depending on the M57N2 d
Donor choice follows the intended gearbox. For the ZF 6HP automatic route one supplier names the BMW X5 E53 3.0d of model years 2004-2006 with engine code 306D2 and the 6HP26 gearbox, and recommends buying the complete donor vehicle so the parts can be seen running before removal. For manual routes the documented donors are the Range Rover L322 3.0d (306D1, one build used an engine with 115,000 miles) and BMW 3 and 5 series cars; one build report specifies a narrow block chosen as 'pre LCI' and gives the engine cost as roughly GBP 600 at the time of writing in April 2022. A conversion specialist offers the swap around a reconditioned 330D iron-block M57.
What has to come from the donor rather than a catalogue: the engine with its DDE control unit and engine harness; for the automatic route the ZF gearbox, its selector and the donor's CAN bus wiring; for the BMW manual route the ZF GS6-37 six-speed gearbox from a 520D; the turbo, which one supplier says must come from a TD6 or X5 E53 for E39/E46 variants; and a sump, for which one build used a 330D unit. One supplier explicitly recommends buying the complete donor vehicle and seeing it run before stripping it, so that missing ancillaries are noticed before the Defender is off the road. Mounts, adapter plates, transfer box adapter, cooling pack and standalone harness are the parts bought new.
Status: VERIFIED · Confidence 84%
Mount kits exist from at least five independent suppliers, and the crucial distinction is bolt-in versus weld-in. Bolt-in: one supplier's 300TDI/M57 306D1 kit is described as bolting straight to the original 300TDI mounts with no welding required, and another supplier's M57N2 kit for the RHD TDCi Defender is described as needing no modification to the original chassis. Weld-in: the universal M57N/M57N2 kit consists of a right and a left engine bracket, two weld-on chassis mounts, two mounting rubbers and a bolt kit, and the automatic kits use welded chassis brackets with placement jigs offered separately; Td5 cars are described as requiring the original mounts to be cut off first. Two documented builds went a third way with fabricated mounts, one using thick mild steel brackets made to hold the correct engine angle. Nothing here is a universal fit - each kit names its chassis generation and block width.
(1Q) Only one source read here names a sump for this installation: a documented Defender 90 build with an M57 306D1 from a Range Rover L322 used a 330D sump together with a dual mass flywheel. No source read here describes the pickup, the oil pump, or the clearance between sump and front axle, steering box or front crossmember for any Defender generation. The dedicated sump thread that came up in two searches was not reachable (see note), so this classic collision point is the weakest part of this dataset.
Three manual routes are documented and they are not variants of one another. First, keeping the Land Rover R380: a 50 mm CNC adapter plate bolts the M57 306D1 narrow block to any Defender or Discovery 300TDI R380, offered by at least three independent manufacturers; one of them lists fitment for Defender 200TDI and 300TDI, Discovery 1 and Range Rover Classic. Second, keeping the Puma MT82: one documented build retained the original six-speed MT82 with an adapter plate described as 'a bolt on job' to give the correct spacing, plus an uprated MT82 output shaft kit. Third, fitting a BMW manual: a documented Defender 90 used the ZF GS6-37 six-speed manual from a 520D with a transfer box adapter to the LT230. Which route is open depends on the block width and on the Defender generation.
No reliable combination-specific information found.
Status: OPEN
No reliable combination-specific information found.
Status: OPEN
The clutch arrangement follows the adapter kit and the two documented approaches are not interchangeable. Solid flywheel route: one adapter kit comes with a solid mass flywheel and a custom spigot bush, includes no clutch, and states that any standard 200/300 TDI TGV fitment clutch may be used with the Defender diesel 2.5 NA OEM release bearing; the same kit requires the BMW ring gear from a BMW flexplate or flywheel with a 270 mm inside diameter and notes that minimal grinding of the bell housing near the new starter position and removal of 10 mm from the end of the guide tube are needed. Dual mass route: another supplier's kit contains a dual mass flywheel with bolt kit and starter ring gear plus a custom clutch kit with plate, cover, bolts, release bearing, pivot ball and spigot bush; a third adapter plate manufacturer requires the customer to supply a BMW dual mass flywheel, a BMW pressure plate and a Land Rover disc. For the MT82 route a documented build used the standard BMW dual mass flywheel with a custom clutch made to suit the 23-spline Ford input shaft, and a conversion specialist quotes a billet adapter plate rated at 650 Nm with a SACHS pressure plate and a genuine Land Rover slave cylinder.
Status: VERIFIED · Confidence 88%
The automatic route is documented for this combination, unlike in most swaps of this kind. The gearbox is the BMW ZF unit that came with the engine: one supplier's complete Defender kit is built around the M57N 306D2 and the 6HP26 from an X5 E53 3.0d of 2004-2006, another supplier's bolt-in mount kit covers 6HP26, 6HP28x and 8HP70x behind an M57N2, a third supplier offers 6HP and 8HP adapters, and a documented Defender 110 was converted a second time from an M57N with a GS6x53DZ manual to an M57N2 with a ZF 8HP70x.
Status: VERIFIED · Confidence 86%
The adaptation for the automatic route sits at the transfer box, not between engine and gearbox, because the ZF unit is the engine's factory partner. Three independent suppliers sell the interface: a custom LT230 transfer box adapter of the X-drive type as part of a complete Defender kit, an 'M57 SWAP 6/8hp 4wd to LT230 Adapter', and an '8HP to LT230 adapter' used in a documented Defender 110 conversion. No source read here names a flexplate part or a flexplate modification for this combination.
Status: VERIFIED · Confidence 84%
Engine and gearbox mounting are supplied together for the automatic route. One supplier's universal kit uses welded chassis brackets for the engine and bolt-in gearbox mounts, with placement jig plates available separately, and states that the transfer box ends up in the factory Puma/TDCi position, so TDCi Defenders need no chassis modification while other models get gearbox brackets that use existing holes and Td5 models require the original mounts to be cut off first; the complete X5 E53 kit likewise requires welding for the chassis mounts and notes that pre-Td5 Defenders need a Td5 centre crossmember sourced separately. A second supplier's kit for the RHD TDCi Defender is bolt-in with no welding or cutting and includes the transfer box rubbers.
Status: VERIFIED · Confidence 84%
Propshaft consequences follow directly from where the transfer box ends up. Because the automatic package puts the transfer box in the factory Puma/TDCi position, further rearward than on earlier Defenders, one supplier states that depending on the Defender variant the propshafts may need modifying or TDCi propshafts may need sourcing. For the TDCi Defender itself a second supplier states that its kit works with the original propshaft lengths.
Status: VERIFIED · Confidence 80%
Control of the ZF gearbox is done over CAN bus from the engine's DDE, not by a separate aftermarket controller. The supplier's automatic body harness carries the ZF 6HP power connection, the gear selector with sport and tiptronic modes, a brake switch for shifter selection, a start inhibit relay and 'full CAN BUS intergration complete with resistance built in to ensure correct comunication between engine ECU and gearbox', plus an OBD port. A general wiring guide from a second publisher confirms the requirement from the other direction: 'in some cases you will need to wire up a can bus circuit, for example you must ensure the can bus circuit is correct when using an automatic transmission'. A third supplier sells ZF6 standalone wiring as a separate item.
Status: VERIFIED · Confidence 84%
(1Q) One documented build addresses the propshafts for a manual conversion: in a Puma 110 that kept its MT82 gearbox and LT230, the original Defender 110 drivetrain including transfer box and propshafts was left unmodified. For the route with a BMW manual gearbox and a transfer box adapter, no source read here states whether the propshaft lengths change. Because the transfer box position is what determines propshaft length, that gap matters and should not be filled by analogy with the automatic route.
(1Q) Only one source read here touches gearing: a documented Defender 90 conversion had the LT230 transfer box fully rebuilt with 1.1:1 ratio gears alongside the M57 and a BMW six-speed manual. No source read here reports a change to the front or rear axle differentials, to the axle ratio or to axle load capacity for this combination, and the absence of such reports is not evidence that no change is needed.
Status: SINGLE_SOURCE · Confidence 42%
The M57's common-rail system needs a feed pressure that the Defender's original arrangement does not supply on its own. One supplier offers an inline fuel pump as an option within the 300TDI/R380 kit; one documented build fitted a Bosch inline high-pressure lift pump for roughly GBP 35 (article dated April 2022) on the passenger chassis rail with rubber-lined P clips and a braided hose to the injection pump, while keeping the original tank lift pump; a general M57 swap guide states that all BMW common-rail diesel systems require pre-supply pressure. A second documented build reports failed fuel pressure regulating valve seals and failed high-pressure pump seals during commissioning - see Known Problems.
Status: VERIFIED · Confidence 84%
DISPUTED: whether the Defender's standard cooling suffices for the M57 is not settled by the sources read here. Against: a radiator manufacturer states that the OEM Td5-style radiator is 'marginal at best' in converted vehicles and sells an M57-specific replacement (part AS318) with over 40 percent more capacity and 35 mm connections sized for the M57; a second supplier sells a Defender radiator and intercooler package with a 56 mm core and the degas pipe relocated to the right-hand side specifically for M57 conversions; a third offers an M57-specific made-to-order radiator and a cooling pack; a conversion specialist includes a 'Stage 3' pack with alloy radiator, alloy intercooler and twin Spal fans; and a documented 300TDI 110 with M57 and six-speed automatic still ran 95 to 110 degrees under load after an uprated radiator, new water pump, new sender and several thermostats had been tried. For: one fully documented Puma 110 build reused the original radiator and intercooler, took its water pipes from a BMW road car and the original 2.2 TDCi engine and connected to the original Puma expansion tank, and reports no cooling problem. The two sides describe different chassis generations, which may explain the divergence, but no source read here resolves it.
Charge air is reworked in every documented route. Two suppliers sell Defender intercoolers specifically for the M57 conversion: one package pairs a 585 x 320 x 65 mm bar-and-plate core with 54 mm inlets and a matching radiator, the other recommends its own high-capacity intercooler with 57 mm connections and notes that its M57 radiator mounts still accept the standard Td5-style intercooler. Boost pipe kits are part of the supplier conversion kits, and a third supplier sells a dump pipe with V-band. One documented build modified an existing full-width 200TDI intercooler by alloy welding rather than buying new; another reused the original Puma intercooler and joined turbo to intercooler to inlet manifold with a series of 90-degree silicone bends and a reducer.
Downstream of the turbo the exhaust is bespoke. One conversion specialist supplies a 3 inch turbo-back stainless system with a sports silencer as part of its Defender M57 package, and another supplier sells a dump pipe with a V-band connection as a separate part. No source read here describes the routing of the downpipe past the chassis rail, the steering or the bulkhead, and none gives a manifold modification for any Defender generation.
The engine runs on its own BMW DDE control unit; the work is making the Defender talk to it. Two standalone loom generations are documented: a DDE4 loom for the five-plug EDC15 control units and a DDE5/6 loom for the two-plug EDC16 units. Suppliers sell standalone body harnesses with a choice of BMW or Land Rover TDCi throttle pedal connector, pedal adapters, ECU holders and standalone ECU services; for automatic conversions the body harness additionally carries the ZF gearbox power connection, the selector with sport and tiptronic modes, a brake switch for shifter selection, a start inhibit relay, pre-wired fuel pump and reverse light relay control, an OBD port and, in the supplier's words, 'full CAN BUS intergration complete with resistance built in to ensure correct comunication between engine ECU and gearbox'. Two documented builds used third-party standalone harnesses and a Land Rover TDCi throttle pedal.
The BMW EWS immobiliser is handled by an emulator rather than by deletion, and the wiring guide read here warns in general terms that power must not be removed from the control unit before the main relay has switched off, because 'failure to follow this rule will probably end up in your EWS emulator coming out of sync'. Instrument integration is done with a dash controller: one documented build used a CAN bus dash controller to bridge the Land Rover and BMW systems, a conversion specialist includes a dash controller in its package, and a third supplier sells a mount for the ECU and dash controller. No source read here explains in detail how the rev counter, the coolant temperature gauge and the speedometer signal are actually driven, so that path remains undocumented.
Status: SUPPORTED · Confidence 74%
One documented build fitted 330 mm vented front brakes and gives the reason directly: the conversion raised output to about 240 bhp. A second documented conversion notes 'Brake upgrades next...' without specifying them. Independently of any engine swap, a Defender big brake kit with 330 mm vented and grooved front and 295 mm rear discs and AP Racing calipers is offered for the model, with the constraint that at least 16 inch wheels are required and that the standard 5.5 x 16 wheels will not clear it. No source read here gives a suspension change for this combination.
Status: SUPPORTED · Confidence 62%
Cooling is the recurring failure in service. A documented 1999 300TDI 110 CSW converted to M57 with a six-speed automatic in 2021 reported that the 'temperature would go into the red even on a short journey'; over the course of the thread the owner replaced the thermostat, the water pump and the temperature sender, pressure tested for head gasket failure, fitted an uprated radiator and a separate VDO gauge, and bench tested several thermostats in boiling water where Gates and Vernet units showed 'zero opening'. After all of that the engine still ran 95 to 110 degrees under load and the owner concluded he was 'not 100% happy but it's better than it was'. A radiator manufacturer independently calls the OEM Td5-style radiator 'marginal at best' in converted vehicles. Second, donor selection: one build report chose a 'pre LCI' narrow block specifically to avoid the timing chain failures found in post-2007 engines, and a German engine reference independently lists timing chain wear, breaking swirl flap mechanisms, Bosch CP3 high-pressure pump trouble and intake manifold leaks as the M57's known weak points. Third, commissioning failures: a documented Defender 90 build lists INPA software installation problems, a faulty throttle pedal, failed fuel pressure regulating valve seals and failed high-pressure pump seals. Fourth, an electrical trap: cutting power to the control unit before the main relay has switched off can throw the EWS emulator out of sync. Finally, a documented non-start: a 2023 forum thread planning an M57 with a six-speed manual on a 7k budget got as far as asking which gearbox to use and produced no build.
Status: VERIFIED · Confidence 90%
No reliable combination-specific information found.
Status: OPEN
Germany, as of 25.07.2026: an engine swap of this kind has no Teilegutachten and no ABE, so the general framework applies. One inspection body puts the starting position as follows: "If modifications have been made to your vehicle that may be expected to endanger other road users, that change the vehicle category, or that worsen emissions or noise behaviour, the vehicle's Betriebserlaubnis may lapse." A second inspection body describes individual assessment for this case: "Without a valid test certificate the modification to the vehicle must be assessed on a case-by-case basis", the officially recognised expert "must carry out all necessary tests and examinations himself", and "only with this report can the competent authority issue an individual operating permit (Einzelbetriebserlaubnis, EBE)". Neither source names engine swaps expressly. Combination-specific, only one German-language forum thread from February 2022 on the Defender with M57 exists, in which the question "Have you ever thought about registering an M57? The emissions report will probably be the problem." is raised and left unanswered; one participant suggests "just ask the inspecting engineer", another reports generally "so far we have got everything registered". The thread reaches no conclusion. This information does not replace advice from the competent inspection body.
Status: SUPPORTED · Confidence 58%
https://mwmachines.co.uk/shop/defender-300tdi-m57-r380-kit | https://mwmachines.co.uk/shop/m57-engine-mounting-kit | https://mwmachines.co.uk/shop/defender-m57n-6hp-conversion-kit-x5-e53-donor | https://mwmachines.co.uk/shop/m57n-6-speed-automatic-engine-mount-kit | https://mwmachines.co.uk/shop/m57n-m57n2-6hp-automatic-body-wiring-harness | https://www.onlinegearboxparts.com/product/bmw-m57-to-300tdi-r380-adaptor-kit/ | https://www.borowskiengineering.com/product/bmw-m57-narrow-block-land-rover-r380-adapter-plate/ | https://house-of-torque.com/product/engine-mounts-m57tue-6hpx/ | https://house-of-torque.com/product/defender-aluminium-radiator-and-intercooler-package/ | https://kingpindesignandfab.com.au/collections/m57-conversion | https://www.allisport.com/shop/performance-products/alloy-radiators/defender-m57-conversion-uprated-radiator/ | https://irbdevelopments.com/defender-big-brake-conversion-v2_irb-front-only-or-front-and-rear-kit/ | https://shop.mahker.com/product/bmw-m57-land-rover-defender-full-engine-conversion/
https://www.youtube.com/watch?v=0bkF4HRPd7E | https://www.youtube.com/watch?v=CSBmrGdhWdM | https://www.youtube.com/watch?v=vgHpYqY3ofk
Zero results. Search run 13 produced no usable Instagram finding at all for this combination; the search returned only supplier and forum pages. For manual follow-up the hashtags #m57defender, #m57swap, #defenderm57 and #bmwpowered are suitable, as are the account names of the suppliers linked above.
https://www.defender2.net/forum/post1053536.html | https://www.landyzone.co.uk/land-rover/defender-110-m57.387830/ | https://www.blacklandy.eu/blboard/vb5/node/2959470 | https://carwiki.de/bmw-m57-motor/ | https://www.onlinegearboxparts.com/m57-6-speed-manual-defender-90/ | https://www.onlinegearboxparts.com/defender-m57n2-8hp/ | https://lofclutches.com/the-m57-powered-engine-swap-agri-defender-110-dcpu/ | https://house-of-torque.com/eninge_conversion_wiring/
31 sources recorded: 27 reachable, 4 unreachable and therefore not used in substance. The 31 findings are spread across 21 domains; of these, 16 publishers carry content (youtube.com appears with three findings in the link field only, and four domains are unreachable). Four German-language sources from four German-language publishers: blacklandy.eu, carwiki.de, tuv.com, tuvsud.com. Note on the checking script: it normalises domains to the last two name components and therefore counts 20 instead of 21 publishers, because mwmachines.co.uk and landyzone.co.uk both collapse to 'co.uk' - in substance these are two mutually independent publishers. No OEM source: no manufacturer document from BMW or Land Rover was reached in this run, so the engine data field rests on a general German-language engine page and a build report. Supplier level: mwmachines.co.uk, onlinegearboxparts.com, borowskiengineering.com, house-of-torque.com, kingpindesignandfab.com.au, allisport.com, irbdevelopments.com, shop.mahker.com, lofclutches.com. Build reports: lofclutches.com (Puma 110 DCPU), onlinegearboxparts.com (Defender 90 with six-speed manual and Defender 110 with 8HP). Forum level: defender2.net, landyzone.co.uk, blacklandy.eu. Several findings from the same publisher count once: mwmachines.co.uk with 5, onlinegearboxparts.com with 3 and house-of-torque.com with 3 findings. shop.mahker.com and the YouTube channel Mahker 4x4 belong together - the video appears in the link field only. spoolas.eu deals with BMW chassis rather than the Defender and was used only for a general engine statement. Unreachable: bavarianengines.com (robots.txt), defendersource.com (HTTP 402), rangerovers.net (HTTP 402), 4x4community.co.za (HTTP 403).
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