Jeep Ignition Coil 56029129AA Replaces UF-504/56029129AB/AF Enhanced ignition performance

The 8-cylinder Jeep Grand Cherokee, Commander and similar models use ignition coil 56029129AA, compatible with 56029129AB, 56029129AF and UF-504 standards. Uses reinforced epoxy resin potting; copper winding density about 12% higher than original; endurance against high-temperature aging extended by over 30% in tests. Functionally stabilizes ignition voltage and reduces misfire rate, especially under high-load conditions. Replacement difficulty medium; requires removing intake manifold, recommended to replace spark plugs simultaneously. Watch the orientation of the high-voltage harness clips during installation.