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There are only two differences that are important.
1. The N55 kit comes with a different hose (17122181274, NLA) than the N54 (17127602294)
2. The N55 kit comes with N54 spark plugs but do not use them. They will not work. Use 12120037582. They should not have been sold in PPKV2 ending -665
The other differences are due to supersessions (the fan, some hardware, and aluminum screw sticker)
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2013 BMW 135is Coupe | Dinan Stage 3 | Dinan Monoball Joints | Dinan Toe Links | 1M Subframe Bushings | 1M Strut Bar | MPSS - BMW 313M's 18x7.5 / 18x8.5 | Min Grey, Savanna | Prem, Tech | DCT | #341/586
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