S54-Powered, Widebody 1973 BMW 3.0CS 6-Speed

The 1973 BMW E9 Coupe is currently bid to $55,555 on Bring a Trailer. See Friday's Watchlist AI fair value, deal score, hammer-price prediction, and bidding intelligence for this 1973 BMW E9 Coupeauction.

This 1973 BMW 3.0CS had been lightly modified at the time it was offered on BaT in 2018, and it has since undergone a custom build that involved adding widebody, CSL Group 2-style bodywork, air suspension, and an E46-sourced 3.2-liter S54 inline-six and six-speed manual. The car was stripped and repainted Nardo Grey with Motorsport-style stripes in 2025 and has been fitted with 18″ Alpina-look wheels, carbon-backed sport seats, adjustable camber plates, a CSL-style tune and air box, upgraded cooling components, and a Rennline Exactshift billet short shifter. The current owner purchased the car

• Make: BMW
• Model: E9 Coupe
• Year: 1973
• Transmission: Six-speed manual
• Engine: 3.2L S54 Inline-Six
• Drivetrain: RWD
• Exterior color: Nardo Grey
• VIN: 2240954