Search Results We have found 1 items matching your search query. Close BMW M3 E30 S14 2.5 Engine Block 1 307 254.9 11 11 1 315 501 Posted 02 years 08 months 20 days 11 hours 47 minutes ago. Engines 1,140 New,original OEM 2.5 L,S14,BMW Motorsport Engine Block in “standard size” of 95.00 mm.The Engine Block does not include pistons. Rare!! BMW M3 E30 S14 2.5 Engine Block, 307 254.9 / B Unknown 1 Page 1 of 1