Cummins - C Series 8.3L with 17mm injectors. Case, J.I. - 8.3L with 17mm injectors. SG Tool Aid 35680 Diesel Tester Adapter for John Deere, Perkins & 21mm Injectors. SG Tool Aid 35730 Diesel Tester Adapter Cat 3054, 3056, Perkins 1000 Series.
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