2013年12月9日 · 88800014, 88800457, 88800460, 88800387, 88880056, 88880099, J42885, PT2900, 2815– 2V700 Sleeve Identification Note: There are two types of injector sleeves used in Mack engines, conical and flat copper. The conical sleeves are made of stainless steel. A washer is used with the flat copper sleeves. You must determine which