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with ventilator 3685868 1 3 87 48 54 SBC exc 261 with ventilator 3686875 1 3 87 48 51 DUBL DUTI w ventilator positive ventilation |
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school bus transfer crankcase ventilator assembly from replaced engine or install new service ventilator Part No 3686875 A B Bracket supplied with engine may be used if sufficient adjustment can be made to align |