Approx. 16 inch overall length. 19011529, 19011530. IMS (integrated magnetic relay) Notice how solenoid mounting bolts go through solenoid and thread into housing. 11 or 12 teeth on gear. Non-rotatable nose. Solenoid ground wire on left. S wire goes to IMS on right. OCP (over crank protection)
41MT. Similar to 37MT but internal parts are different. Small post on solenoid: Activates from ign on right, ground wire on left. Optional OCP over crank protection.
Delco approx. 19 1/2 inches end to end. 10461033, 10461038, 10461052, 10461533 plus many others. Ground wire on left of solenoid, s terminal on right. Some have OCP (over crank protection) 11 teeth bendix most common. Also available in 10 or 13. Roughly 3 inch back plate length.
Delco 17 1/4 inches overall length. 10461008, 10461089, 10461280 plus many others. Ground wire on left, some are internally grounded. S terminal on right. Some have OCP (over crank protection) Some have ground post on back, some are internally grounded. 12 teeth on bendix, some have 10. Approx. 3 inch length on
Delco 24SI. 145 amp. Pad mount. Plastic cover on back. 4 pin plug in on side normally not used.
Delco 33SI pad mount. Threaded hole on side for ground cable. Optional smaller output terminals.
Delco 33SI. 110-135 Amp. Same mount as others makes update easy. Similar to older model 30SI. Auxiliary smaller output terminals on side.
Delco 22SI Pad Mount. 130-160 amp. 2 optionally used output terminals for accessories or tachometer feed. 2 spade terminals on side usually not used.
