BMW S14 Engine Project & Getrag 5-Speed Gearbox | 2.3L Inline-Four | E30 M3 Original Powertrain
Offered here is a BMW S14 2.3-liter inline-four engine project paired with a Getrag 5-speed manual gearbox, removed from a 1990 BMW E30 M3. This is a genuine M3 drivetrain — the same legendary configuration that powered BMW’s Group A touring cars and helped define the brand’s motorsport legacy.
This BMW 2.3-liter S14B inline-four and Getrag five-speed manual gearbox were removed from the seller’s 1990 E30 M3 after a rod bearing spun and damaged the engine in 2003. The engine was stored around 20 years and has been partially disassembled. Details include a cast-iron block, an aluminum cylinder head, dual overhead camshafts, and a black-finished intake plenum with “BMW M Power” lettering. The gearbox is accompanied by a clutch.
The engine suffered a spun rod bearing in 2003 and was subsequently removed from service. It has since been stored for approximately 20 years and remains partially disassembled, making it an ideal base for a complete rebuild or restoration project.
Technical Specifications
| Specification | Details |
|---|---|
| Engine Code | BMW S14B23 |
| Displacement | 2.3 Liters (2302 cc) |
| Configuration | Inline-4, Naturally Aspirated |
| Power (Factory Rated) | 192–200 HP (143–147 kW) @ 6,750 rpm |
| Torque (Factory Rated) | 240 Nm (177 lb-ft) @ 4,750 rpm |
| Block Material | Cast-Iron |
| Head Material | Aluminum Alloy |
| Valvetrain | Dual Overhead Camshafts (DOHC), 16 Valves |
| Induction | Individual Throttle Bodies |
| Fuel System | Bosch Motronic EFI |
| Transmission | Getrag 5-Speed Manual |
| Drive Configuration | Rear-Wheel Drive |
| Production Vehicle | BMW M3 (E30) 1986–1991 |
| Condition | Project / Rebuild Required |
Included Components
BMW S14B23 Engine (Core) – Partially disassembled, ideal for restoration or rebuild
Cast-Iron Engine Block – Original M3 specification
Aluminum Cylinder Head – Complete with camshafts
Black “BMW M Power” Intake Plenum – Signature M design with individual throttle bodies
Getrag 5-Speed Manual Gearbox – Original E30 M3 transmission
Clutch Assembly – Included with gearbox
Assorted Hardware and Fasteners – Stored with the engine components
Condition Notes
Engine suffered rod bearing failure before removal in 2003
Has been stored indoors for roughly two decades
Partially disassembled for inspection and preservation
No visible corrosion or external damage noted on major castings
Gearbox turns freely and includes matching clutch unit
Recommended for complete rebuild or race restoration project
Compatibility
BMW M3 (E30) 1986–1991
Suitable for E30 M3 restorations, race builds, or collector projects
Can be adapted for use in retro racing or custom M Power swaps
Collector Significance
The BMW S14 is one of the most celebrated naturally aspirated four-cylinder engines ever built — derived from the legendary M10 block and S38 head architecture used in BMW’s Group A and DTM cars.
Its high-revving nature, distinctive intake sound, and direct motorsport lineage make it an icon among BMW enthusiasts.
This particular unit, paired with its original Getrag 5-speed gearbox, represents an authentic foundation for a numbers-matching restoration, track car rebuild, or investment-grade M3 project.
BMW S14 Engine Project & Getrag 5-Speed Gearbox — a genuine E30 M3 powertrain, stored for two decades and ready for a new life in a rebuild or restoration project.
Featuring its original BMW M Power plenum, DOHC 16-valve head, and matching gearbox with clutch, this is an exceptional base for anyone looking to restore or recreate the legendary M3 performance experience.
Miguel Castañeda (verified owner) –
The replacement transmission was exactly as described. After installation, the car shifts smoothly, and there haven’t been any issues at all.
Arthur Fournier (verified owner) –
Les pièces sont de très bonne qualité et les prix restent compétitifs par rapport aux fournisseurs en France.
Antoine Bernard (verified owner) –
Le rapport qualité-prix est excellent. Les pièces sont de très bonne qualité et les délais de livraison ont été respectés.
Thierry Colin (verified owner) –
J’avais quelques doutes avant de commander en ligne, mais le service client m’a rassuré en vérifiant la compatibilité avec mon véhicule. Je recommande sans hésiter.
Martin Aubry (verified owner) –
Très bon rapport qualité-prix. Les pièces sont fiables et nettement moins chères que chez le concessionnaire.
Olivier Chevalier (verified owner) –
Les pièces sont de très bonne qualité et les prix restent compétitifs par rapport aux fournisseurs en France.
Noah Cooper (verified owner) –
The brake components were high quality and fit exactly like the originals. Installation was simple, and braking performance has been excellent.
Emily Brooks (verified owner) –
The engine has now been installed for several months and continues to perform flawlessly. No oil leaks, no unusual noises, and excellent performance.
Sylvain Morel (verified owner) –
Livraison rapide jusqu’à Bordeaux. Toutes les pièces étaient très bien protégées et sont arrivées en excellent état.
Philip Turner (verified owner) –
I purchased a transmission for my 528i, and it’s been performing perfectly since installation. Gear changes are smooth, and the vehicle drives better than it has in a long time.
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Raúl Benítez (verified owner) –
Very impressed with the overall quality of the parts. Everything matched the original specifications, making installation quick and hassle-free.
Cameron Lawson (verified owner) –
The replacement differential and transmission arrived in excellent condition. Both components have performed flawlessly since installation.
Manuel Gallego (verified owner) –
Shipping was faster than expected, and the packaging was excellent. Even the larger body panels arrived without any damage.
Oscar Richardson (verified owner) –
I ordered both front and rear bumpers, and the fitment was excellent. The quality of the materials is very impressive.
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Finding reliable BMW parts online isn’t always easy, but this company delivered exactly what was promised.
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Je recommande cette boutique à tous les propriétaires de BMW. Des pièces de qualité, une équipe compétente, une livraison rapide et un service client irréprochable.
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Grâce à la vérification de mon VIN avant l’expédition, j’ai reçu exactement les bonnes pièces pour mon véhicule. Un service vraiment appréciable.
David Marshall (verified owner) –
The replacement engine started immediately after installation. Performance has been excellent with no leaks, unusual noises, or warning lights.
David Salazar (verified owner) –
Finding genuine BMW parts online can be difficult, but this company delivered exactly what they advertised. I will definitely be ordering again.
David Marshall (verified owner) –
The packaging for the engine was outstanding. It arrived securely mounted, protected from damage, and ready for installation.
Gregory Pelletier (verified owner) –
La boîte de vitesses fonctionne comme une neuve. Je retrouve enfin le plaisir de conduire ma BMW au quotidien.
Adam Foster (verified owner) –
Customer support took the time to verify my VIN before shipping, which helped ensure I received the correct engine. That level of service is greatly appreciated.
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Les plaquettes de frein sont de très bonne qualité. Le freinage est puissant et totalement silencieux.
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Les jantes sont magnifiques et de très bonne qualité. Elles correspondent exactement aux photos du site et donnent un nouveau look à ma voiture.
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C’est la deuxième fois que je commande sur ce site et je suis une nouvelle fois très satisfait. Service sérieux et produits de qualité.
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Florian Perrin (verified owner) –
Les pièces sont de très bonne qualité et les prix restent compétitifs par rapport aux fournisseurs en France.
Andrew Graham (verified owner) –
I purchased a transmission for my 528i, and it’s been performing perfectly since installation. Gear changes are smooth, and the vehicle drives better than it has in a long time.
Jonathan Reed (verified owner) –
I’ve recommended this company to several friends because every order I’ve placed has been accurate, professionally packaged, and delivered on time.