Home / Avionics / Instruments & Gauges / Probes / Sending Units / Leads / Probe, EGT, Clamp Long Probe, EGT, Clamp Long$32.13 Probe, EGT, Clamp Long quantity Add to cart SKU: INEGP100L Category: Probes / Sending Units / Leads Description Description Clamp on probe for use on 503, 532, 582 & 618. Clamps directly onto exhaust manifold. One probe per cylinder. Use3/16″ dia. hole. Can also be used on the manifolds that have the welded boss.