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QU30342 3-4 Brass Synchro Ring for 1959-1967 SM420 Transmission
30342$21.98QU30342 3-4 Brass Synchro Ring for 1959-1967 SM420 4 speed manual transmissions. -
QU30442 SM420 2nd Gear Synchronizer Ring
30442$81.98QU30442 New Old Stock 2nd Gear Synchronizer Ring for 1948-1967 Chevy trucks with Muncie SM420 4 Speed Transmission. -
QU30639 SM420 3-4 Synchro Assembly
30639$349.98QU30639 Replacement 3-4 Synchronizer Assembly for GM SM420 manual transmissions includes Hub, Slider, Struts, and Springs.