Not Sold
S54-Powered Euro 1980 BMW 635CSi 6-Speed
Bring A Trailer • US • 13 Nov 2026
Market Position:
Market Average
Track live values and receive listing alerts
Track live values and receive listing alerts
Not Sold
S54-Powered Euro 1980 BMW 635CSi 6-Speed
US • 13 Nov 2026
Vehicle Details
AI Listing Summary
This 1980 BMW 635CSi stands out with a recent S54 M3 engine and 6-speed manual transmission conversion by Lang Racing Development. While mechanically impressive, the listing notes paint chips and blemishes, suggesting it's a driver-focused classic with some cosmetic needs.
Condition
7
The car has had significant mechanical work done, including an S54 engine swap and transmission rebuild. However, the description notes 'chips and blemishes in the paint,' indicating it is not in excellent or outstanding condition externally. The interior leather has been refreshed, but the overall condition is 'Very Good' due to the visible paint imperfections and the age of the vehicle, despite extensive mechanical upgrades.
/ 10
91,000 miles
WBA53310005590488
1980
Auction
Manual
LHD
United States
Not Sold
S54-Powered Euro 1980 BMW 635CSi 6-Speed
Bring A Trailer • US • 13 Nov 2026
Market Position:
Market Average
Track live values and receive listing alerts
Description
Shown $39k M3 Drivetrain Swap c.2025 Rebuilt 3.2-Liter S54 Inline-Six Overhauled Six-Speed Manual Transmission Graphite Metallic Paint Leather Upholstery 15" Style 5 Alloy Wheels Records Power Windows & Locks Swap Records This slicktop 1980 BMW 635CSi is a European-market example that was refurbished before being sold through by Oldenzaal Classics and imported in 2025, after which it was fitted with an S54 3.2-liter inline-six and six-speed manual transmission by Lang Racing Development.
The engine installation included rebuilt cylinder head and VANOS components, new timing-chain components, oil pump and bearings, fabricated engine mounts, headers and exhaust, a custom intake, and associated wiring and control hardware.
The drivetrain uses an E46 six-speed transmission, a limited-slip differential, and a custom M3 driveshaft.
The car also features 15″ BMW Style 5 wheels, a decklid spoiler, fog lights, European-market lighting and bumpers, power windows, and power locks.
Now with an...
Price Analysis vs Other 6 Series (E24) 635CSis
£1,662
Lowest Price (Since 2020)
£15,154
Median Price (Since 2020)
£55,125
Highest Price (Since 2020)
World Record
If this vehicle sells at the mid-point of its estimate it will set a new world record for the [enter model]
Top X%
The mid-point of the vehicle's estimate places it in the top [X]% of sold prices we've seen for the [enter model]
Lowest Price
If this vehicle sells at the mid-point of its estimate it will be the lowest price we've seen for the [enter model]
Average Price
The mid-point of the vehicle's estimate places it near the average price we see for the [enter model]
Rare Sale
This vehicle comes to market rarely. In auction records we've only seen [enter number] sold before
Icon
This vehicle is an icon of the game. Any collection would benefit from having one
Previous 6 Series (E24) 635CSi Sales
MOT Information
Loading...
Loading...
Latest MOT mileage:
Loading
MOT History
Loading...
Loading...
Loading...
MOT Mileage Trend
Gallery
People Also Viewed - For Sale
People Also Viewed - Historic
Auction House Headquarters
Bring A Trailer
1300 22nd Street, Suite 200, San Francisco, California, 94107, US
Operating from San Francisco, California, Bring A Trailer is an online auction platform dedicated to classic, performance, and collector vehicles. They operate timed online auctions globally and provide vehicle consignment.
Insurance
