12033: RING SET-PISTON ------------------------------------------------------------------------------------------------------------- part number Required Production period Applies for models Replacements ------------------------------------------------------------------------------------------------------------- 12033N4200 01 10.1978 - 04.1980 L28E ------------------------------------------------------------------------------------------------------------- 12033N4220 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12033N4220 01 09.1981 - 08.1982 *L28E ------------------------------------------------------------------------------------------------------------- 12033N4220 01 09.1982 - ... *L28E ------------------------------------------------------------------------------------------------------------- 12033P8360 01 05.1980 - 08.1981 L28E 12033P8370 Interchangeable ------------------------------------------------------------------------------------------------------------- 12033P8370 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12033P8600 01 09.1981 - 08.1982 L28E 12033P8610 Interchangeable ------------------------------------------------------------------------------------------------------------- 12033P8610 01 09.1982 - ... L28E ------------------------------------------------------------------------------------------------------------- 12036N4200 01 10.1978 - 04.1980 L28E ------------------------------------------------------------------------------------------------------------- 12036N4220 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12036N4220 01 09.1981 - 08.1982 *L28E ------------------------------------------------------------------------------------------------------------- 12036N4220 01 09.1982 - ... *L28E ------------------------------------------------------------------------------------------------------------- 12036P8360 01 05.1980 - 08.1981 L28E 12036P8370 Interchangeable ------------------------------------------------------------------------------------------------------------- 12036P8370 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12036P8600 01 09.1981 - 08.1982 L28E 12036P8610 Interchangeable ------------------------------------------------------------------------------------------------------------- 12036P8610 01 09.1982 - ... L28E ------------------------------------------------------------------------------------------------------------- 12038N4200 01 10.1978 - 04.1980 L28E ------------------------------------------------------------------------------------------------------------- 12038N4220 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12038N4220 01 09.1981 - 08.1982 *L28E ------------------------------------------------------------------------------------------------------------- 12038N4220 01 09.1982 - ... *L28E ------------------------------------------------------------------------------------------------------------- 12038P8360 01 05.1980 - 08.1981 L28E 12038P8370 Interchangeable ------------------------------------------------------------------------------------------------------------- 12038P8370 01 05.1980 - 08.1981 L28E ------------------------------------------------------------------------------------------------------------- 12038P8600 01 09.1981 - 08.1982 L28E 12038P8610 Interchangeable ------------------------------------------------------------------------------------------------------------- 12038P8610 01 09.1982 - ... L28E ------------------------------------------------------------------------------------------------------------- Source of above chart: https://nissan-europe.epc-data.com/280zx/s130/2647-l28e/engine_mechanical/120/12033/