BMW’s new S58 3.0 litre twin-turbocharged straight-six petrol engine that’s currently in use for the X3 M and X4 M may soon find its way into a hotter version of the A90 Toyota GR Supra, Autocar reports. The 510-hp unit will be used across the high-performance M range, starting with the M2 Coupe.

However, in a break from convention, the publication states that it’s possible for the S58 engine to be featured in the Supra as well, although currently there’s no expression of interest from Toyota, BMW M chief Markus Flasch said. If the deal is seen through, it would be the first BMW M engine to be featured in a third-party car since the McLaren F1‘s S70 V12.

Flasch told Autocar: “We’ve certainly made no offer to supply the engine to Toyota – and no request has been made, as far as I know. But it’s an interesting idea, if unlikely for now. It would be a lot for us to give away, you might say. But I’d never say never.”

The top-of-the-line Toyota Supra currently uses the B58 3.0 litre straight six engine from which the S58 was developed, although only 10% of parts are common between the two power units. In the Supra, the B58 makes 340 PS at 5,000 rpm and 500 Nm of torque from 1,600 to 4,500 rpm. By comparison, the S58 makes up to 510 hp and 600 Nm of torque, and is said to be easy to package in the Supra.

Flasch added: “As a rule, we don’t offer BMW M engines to third parties because we consider them such a strength of our cars. I think it would be a hard decision for a lot of the team to accept – particularly with the S58 being so new. Why would we sell it before we had a chance to use it ourselves in all the places we plan to?” But, as he said himself, never say never.

GALLERY: BMW M S58 3.0 litre inline-six engine