BMW S14 2.3L Engine with Getrag 5-Speed Gearbox – E30 M3 (1989)

Up for sale is a BMW S14B 2.3-liter inline-four engine paired with a Getrag five-speed manual gearbox, removed from a 1989 E30 M3. This package was acquired by the seller in 2019 and represents a rare opportunity to obtain a classic E30 M3 drivetrain in good condition. The S14 engine is renowned for its dual overhead camshafts, 16-valve aluminum cylinder head, and cast-iron block, making it one of BMW’s most iconic motors for motorsport and street performance.

The engine features a black crinkle-finished intake plenum with the signature “BMW M Power” lettering, maintaining a factory-correct look. The included Getrag 5-speed gearbox retains the clutch slave cylinder, fork, and throw-out bearing, making it a ready-to-install drivetrain package. Ancillary components include a Bosch Motronic control module, wiring harness, exhaust manifold, and other original equipment to simplify installation or restoration.

Factory-rated output for the 2.3L S14 engine was 192 horsepower and 170 lb-ft of torque, providing the spirited driving experience the E30 M3 is famous for. The engine was removed from a car that showed approximately 150,000 miles, offering a combination of longevity and usable performance for restoration or race projects.

Technical Specifications

• Engine Code: BMW S14B23

• Displacement: 2.3 liters (2,302 cc)

• Configuration: Inline-four (I4)

• Valvetrain: DOHC, 16 valves

• Block Material: Cast iron

• Cylinder Head Material: Aluminum alloy

• Intake Plenum: Black crinkle finish with “BMW M Power” lettering

• Factory Output: 192 hp @ 6,750 rpm, 170 lb-ft torque @ 4,750 rpm

• Gearbox: Getrag 5-speed manual

• Included Gearbox Components: Clutch slave cylinder, fork, throw-out bearing

• Ancillary Components: Bosch Motronic ECU, wiring harness, exhaust manifold, miscellaneous brackets and fittings

• Mileage: Approximately 150,000 miles on the original engine

Package Includes

• BMW S14B23 2.3L inline-four engine

• Getrag 5-speed manual gearbox with clutch components

• Bosch Motronic engine control module

• Wiring harness

• Exhaust manifold

• Ancillary components for installation

Compatibility

• BMW E30 M3 (1986–1991)

• Suitable for classic restoration, motorsport projects, or E30 engine swaps

• Compatible with other E30 chassis variants with appropriate mounts and transmission adapters

Condition

• Engine and gearbox removed from a high-mileage 1989 E30 M3

• Well-maintained and complete package, ready for restoration or rebuild

• Storage and preservation recommended before installation

This BMW 2.3-liter S14B inline-four and Getrag five-speed manual gearbox are said to have been removed from a 1989 E30 M3 that was acquired by the seller in 2019. The engine features a cast-iron block, an aluminum cylinder head, dual overhead camshafts, and a black-finished intake plenum with “BMW M Power” lettering. The gearbox retains a clutch slave cylinder, and the package also includes a Bosch Motronic control module, a wiring harness, an exhaust manifold, and ancillary equipment.