Part numbers listed below indicate interchangeable parts. These parts share the same size, parameter, function and compatibility. However, please note that items from different brands may have minor variations.
C938, C-938 - DURALAST, SPECTRA PREMIUM, WELLS
C531, C-531 - SPECTRA PREMIUM, ACDELCO, UNITED AUTOMOTIVE ENGINE PRODUCTS
UF121, UF-121 - STANDARD MOTOR PRODUCTS, SMP, STANDARD IGNITION
50093 - ORIGINAL ENGINE MANAGEMENT, FORECAST
250092, 2-50092 - MASTERPRO, MASTERPRO IGNITION
CLS1043 - TPI TRUE PARTS INCORPORATED, IMC
53006565, 5300 6565 - DODGE, CHRYSLER
CUF121 - WPS WORLD POWER SYSTEMS, WAI
521977, 521-977, 52-1977 - CARQUEST