Replacement air intake asm for primary(with mild steel elbow/solenoid) on E-Classic 1400STD, 1400IR & 2300 models: -E-Classic 1400 STD models with serial # E100004 to E100011. -E-Classic 1400 IR models with serial # E100320 to E101182. -E-Classic 2300 models- all serial numbers. Order pn 7268 for E-Classic 1400 models with serial # E100012 to E100319.