They fit the RB26DETT RB25DET RB20DET but the difference between the RB25DET series 1 and series 2 Splitfire coil
packs are the igniters. The series 1 have separate igniters, where the
series 2 are built in. You should be able to tell by looking at the
existing coil packs. Alternatively you could look up the engine number
with Nissan. I hope that helps......
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