BMW S14 Engine, Getrag 5-Speed Transmission & Complete Parts Package

Offered for sale is a BMW S14 2.3-liter inline-four engine paired with a Getrag five-speed manual transmission, removed from a 1989 BMW E30 M3. This package represents one of BMW Motorsport’s most iconic powertrains, renowned for its high-revving nature, robust engineering, and racing pedigree.

The engine reportedly underwent a complete rebuild before the seller’s acquisition in late 2022, including block machining, internal component replacement, and cylinder head reconditioning. It comes accompanied by an extensive selection of ancillary components, making it an ideal turnkey package for an E30 M3 restoration, motorsport project, or period-correct BMW swap.

Technical Specifications

• Engine Code: S14B23

• Displacement: 2.3 liters (2,302 cc)

• Configuration: Inline-four (I4)

• Valvetrain: Dual overhead camshafts (DOHC), 16 valves

• Block Material: Cast iron

• Cylinder Head: Aluminum

• Induction: Individual throttle bodies with “BMW M Power” airbox

• Fuel System: Bosch Motronic electronic fuel injection

• Factory Output:

  • 192 horsepower @ 6,750 rpm

  • 170 lb-ft torque @ 4,750 rpm

Rebuild Work (Performed by Previous Owner)

• Engine block honed and resurfaced

• New crankshaft installed

• New pistons and connecting rods fitted

• All seals replaced

• Replacement cylinder head rebuilt with:

  • New camshafts

  • New valves

  • New valve springs

The result is a refreshed, mechanically sorted powerplant ready for installation with supporting components included.

Included Components

Engine & Drivetrain

• Rebuilt BMW S14 2.3L inline-four engine

• Getrag 5-speed manual transmission (with clutch and flywheel)

• BMW M Power valve cover

• Oil pan installed

Fuel, Air & Ignition Systems

• BMW M Power airbox assembly

• Throttle bodies (individual)

• Fuel-injection components

• Ignition components (including distributor and coil packs)

• Chipped Bosch Motronic ECU

• Complete engine wiring harness

Cooling & Electrical

• Radiator

• Fans and shroud

• Coolant expansion tank

• Water pump

• Alternator

• Starter motor

Mounting & Hardware

• Engine arms and mounts

• Miscellaneous brackets and hoses

• Clutch assembly

Condition

• Fully rebuilt engine (prior to 2022 acquisition)

• Removed from a 1989 BMW E30 M3 showing approximately 112,000 miles

• Engine has not been run since rebuild under current ownership

• Comprehensive parts inventory included for complete installation

Compatibility

• Direct fit: BMW E30 M3 (1986–1991)

• Possible adaptation: BMW 2002, E21, E28, or E36 projects with modification

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