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 09 months 25 days 24 minutes ago. Engines 1,160 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