The M20 engine platform found in E30's is prone to substantial vacuum leaks, nowhere greater than at the ICV elbow. Not only is this part NLA (No Longer Available), it wouldn't matter because an OEM part would still be loose.
83–93 BMW E30 E34 E36 M20 M50 BOSCH Idle Regulating Control Valve TShape ICV OEM
82 86 BMW E30 325 325E 325ES M20B27 Eta ICV Idle Control Valve 13411707395 OEM
Hybrid Racing IACV Delete Plate HYB-ICV-01-04 K20 K24 K-Series Intake Manifold
E46 E39 M52 M54 Intake Manifold ICV Idle Control Valve Plastic Insert Port Right
Toyota AE111 20V Blacktop 4AGE Idle Air Control Valve IACV 22270-16070 ICV 4A-GE
0280140516 Fits For Volvo Saab ISV ICV IAC Idle Air Control Valve
