Description
Diaper is NHRA approved but is not designed for vehicles that require SFI approved diapers
4-paddle cerametallic construction
Contact our Build Advisors if you have any questions or concerns Sales@5150AutoSport
below and behind the fuel cell and away from the exhaust system
The ARP Head Stud Kit is a bolt-on kit that requires no additional modifications
S14 EVO3 2.5L Crankshaft, E30 M3 SC7426 Diaper is NHRA approved butNEW OEM S14 EVO3 2. 5L Crankshaft 4 cylinder engine. Replaces BMW Part number 11211315485, 11211316978, 11211316979 factory 87mm Stroke. Does NOT come with bearings.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy






















