The E30 has become a great platform for engine swaps of all kinds

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All bearings measured with the new Mahr air gauge will not have marks on them

Designed with durability and precision in mind

To install

BMW S54 Complete Engine Build Kit by 5150 AutoSport CAN Keypad The E30 has become aHave you been considering building your E46 M3 but weren't sure where to start? Unsure of what components to pair for the best possible power and reliability combination? We receive inquiries daily from S54 owners interested in building their engine but unsure where to start. The 5150 AutoSport Complete Engine Build Kit features every component you need to fortify your BMW S54 Engine internally and prepare for high power, high boost applications, or