BMW S14 Engine and Getrag 5-Speed Gearbox

“Crown Jewel” of the BMW enthusiast world. In 2026, finding a complete S14 engine paired with a Getrag 265 gearbox is increasingly rare, as most are already locked away in high-value E30 M3s.

For a seller, this is a six-figure powertrain package; for a buyer, it’s an investment in the most iconic touring car engine in history.

1. Technical Profile: The S14B23

The S14 is essentially the head from the M1 (M88) with two cylinders lopped off, sitting on a modified M10 block.

• Engine: S14 DOHC 2.3-Liter Inline-Four.

• Transmission: Getrag 265 (likely the 265/5 “Dogleg” version if it’s a European spec or early M3).

  • Note: If it is the Dogleg, 1st gear is down and to the left, which is highly coveted by collectors.

• Cosmetics: Powder-coated intake plenum and valve cover (usually in the classic “BMW M Power” crinkle black or silver) significantly enhance the “engine bay jewelry” appeal.

2. 2026 Market Valuation (Estimated USD)

By 2026, the S14 has transcended “used engine” status and is now priced as a “historical artifact.”

3. Key Listing Details to Verify

To maximize the sale or ensure a safe purchase, the following details are critical in 2026:

• Engine Block Integrity: The S14 blocks are thin-walled. Buyers will want to know if it is on the standard bore or if it has been bored to 2.5L (Evo spec).

• Timing Chain & Guides: The guides are the “ticking time bomb” of the S14. A listing that states these were replaced in the last 10,000 miles adds $5,000+ in perceived value.

• ITB Condition: The Individual Throttle Bodies are mechanical art. They should be sync’d and free of shaft play.

• Transmission Syncros: The Getrag 265 is stout, but 2nd gear syncros are notoriously weak. Documentation of a refresh is a major selling point.

4. Included “Spare Parts” Value

In 2026, even “small” S14 parts are expensive. If the listing includes any of the following, the price should be adjusted upward:

• Airbox (Carbon or Plastic): An original airbox is essential for “stock” purists.

• Wiring Harness & ECU: If it includes a “chipped” ECU or a modern standalone (like MaxxECU), specify that for the Restomod crowd.

• Headers: The factory equal-length headers are expensive and difficult to find in good condition.

5. 2026 Expert Tip: “The S54 Comparison”

In the 2026 market, many “casual” BMW fans might suggest swapping an S54 (from the E46 M3) instead because it’s cheaper and more powerful. However, the S14 is about purity and weight distribution.

An E30 M3 with an S14 is a balanced scalpel; an E30 with a 6-cylinder swap is a hammer. Emphasize the lightweight nature (approx. 100 lbs lighter than a 6-cylinder) in the listing.