BMW S54B32 Engine and 6-Speed Gearbox

The S54B32 is widely considered the peak of BMW’s naturally aspirated inline-six development. In 2026, it remains the gold standard for swaps into E30s, E36s, and Z3s, while acting as the essential heart for E46 M3 restorations.

Pairing it with the Getrag 420G 6-speed creates the definitive “analogue” driving experience.

Listing Details

• BMW S54B32 Engine
• 3.2-Liter Inline-Six
• Iron Block w/Aluminum Cylinder Head
• Dual Overhead Camshafts
• Double-VANOS Variable Valve Timing
• Ancillary Equipment
• Getrag Six-Speed Manual Gearbox

Technical Profile

• Engine: 3.2-Liter Inline-Six, Individual Throttle Bodies (ITBs), Double VANOS.

• Output: 333–343 hp (depending on US/EU spec) / 262 lb-ft torque.

• Redline: 8,000 RPM (piston speeds that rivaled F1 engines of the era).

• Transmission: Getrag 420G 6-Speed Manual (stout, but complex to service).

2. 2026 Market Valuation (Estimated USD)

By 2026, the S54 has shifted into a “rebuild-first” economy. Buyers are wary of high-mileage units that haven’t addressed the “Big Three” mechanical issues.

3. The “Big Three” Checklist (Mandatory for 2026)

In the 2026 market, the value of an S54 is defined by whether these three services have been performed and documented:

1. Rod Bearings: The factory bearings were prone to premature wear. A 2026 listing must specify if they’ve been replaced (ideally with treated bearings like WPC or ACL).

2. VANOS System: The variable valve timing system can suffer from sheared bolts or hub failure. A “Beisan Systems” or “Dr. VANOS” rebuild adds significant value.

3. Subframe/RACP: While not part of the engine itself, if the engine is being sold as part of a donor car, the rear subframe mounting points must be inspected for cracks.

4. Swap-Ready Components

If you are selling or buying this for a swap, ensure the following are included to avoid “nickel-and-diming” yourself later:

• MSS54 / MSS54HP ECU: If the EWS (immobilizer) has been deleted, the value goes up for swappers.

• Gas Pedal: The S54 is Drive-by-Wire; you need the matching electronic pedal.

• Wiring Harness: Ensure it hasn’t been cut.

• Oil Cooler & Lines: The S54 runs hot; the factory oil cooling system is essential.