| Spring Code | Begin Year | End Year | SRI No. | Supersession | Notes | 
|---|---|---|---|---|---|
| FRONT - SUPER DUTY 99 & Up | |||||
| 1 | 1988 | 1993 | 43-526 | ||
| H | 1994 | 1997 | 43-630 | ||
| R | 1999 | 2000 | 43-772 | 43-800 | Use 43-812 | 
| S | 1999 | 2000 | 43-770 | 43-808 | Use 43-812 | 
| 2001 | 2001 | 43- | 43-808 | Use 43-812 | |
| 2001 | 2001 | 43-808 | Use 43-812 | ||
| 2002 | 2002 | 43- | 43-808 | Use 43-812 | |
| 2002 | 2004 | 43-854 | 43-808 | Use 43-812 | |
| T | 1999 | 2000 | 43-766 | 43-810 | Use 43-812 | 
| 2001 | 2001 | 43-810 | Use 43-812 | ||
| 2001 | 2001 | 43- | 43-810 | Use 43-812 | |
| 2002 | 2002 | 43- | 43-810 | Use 43-812 | |
| 2002 | 2004 | 43-856 | 43-810 | Use 43-812 | |
| U | 1999 | 2000 | 43-778 | 43-812 | |
| 2001 | 2001 | 43-824 | 43-812 | ||
| 2001 | 2001 | 43-812 | |||
| 2002 | 2002 | 43- | 43-812 | ||
| 2002 | 2004 | 43-858 | 43-812 | ||
| V | 1999 | 2000 | 43-776 | 43-814 | Use 43-818 | 
| 2001 | 2001 | 43-820 | 43-814 | Use 43-818 | |
| 2002 | 2002 | 43- | 43-814 | Use 43-818 | |
| 2002 | 2004 | 43-860 | 43-814 | Use 43-818 | |
| W | 1999 | 2000 | 43-774 | 43-816 | Use 43-818 | 
| 2001 | 2001 | 43-816 | Use 43-818 | ||
| 2001 | 2001 | 43-826 | 43-816 | Use 43-818 | |
| 2002 | 2004 | 43-846 | 43-816 | Use 43-818 | |
| X | 1999 | 2000 | 43-768 | 43-818 | |
| 2001 | 2001 | 43-818 | |||
| 2001 | 2001 | 43-822 | 43-818 | ||
| 2002 | 2004 | 43-844 | 43-818 | ||
| Spring Code | Begin Year | End Year | SRI No. | Supersession | Notes | 
| FRONT - F Series 97 & Earlier | |||||
| 5 | 1981 | 1997 | 43-474 | Use 43-476 | |
| 6 | 1981 | 1997 | 43-476 | ||
| 7 | 1981 | 1997 | 43-478 | Use 43-498 | |
| 8 | 1985 | 1997 | 43-516 | ||
| 9 | 1981 | 1997 | 43-498 | ||
| Q | 1995 | 1997 | 43-678 | 43-498 | |
| R | 1985 | 1997 | 43-628 | Use 43-516 | |
| S | 1985 | 1997 | 43-522 | Use 43-516 | |
| T | 1985 | 1997 | 43-536 | Use 43-516 | |
| Y | 1981 | 1986 | 43-492 | 43-498 | |
| Spring Code | Begin Year | End Year | SRI No. | Supersession | Notes | 
| REAR - F Super Duty | |||||
| 8 | 1988 | 1993 | 43-899 | 43-901 + 43-903 | |
| 1994 | 1997 | 43-1089 | 43-901 + 43-1215 | ||
| 1994 | 1997 | 43-1211 | 43-901 + 43-1215 | ||
| A | 1999 | 2001 | 43-1341 | 43-1261 | |
| 2001 | 2001 | 43-1381 | 43-1261 | ||
| B | 1999 | 2002 | 43-1363 | 43-1261 | |
| 2002 | 2002 | 43- | 43-1261 | ||
| 2003 | 2004 | 43-1435 | 43-1261 | ||
| 2005 | 2005 | 43-1535 | 43-1587 + 43-1291 | ||
| 2005 | 2006 | 43-1585 | 43-1587 + 43-1291 | ||
| C | 1999 | 1999 | 43-1263 | ||
| 2000 | 2000 | 43-1343 | 43-1263 | ||
| 2001 | 2002 | 43-1371 | 43-1263 | ||
| 2002 | 2002 | 43- | 43-1263 + 43-1481 | ||
| 2003 | 2003 | 43-1477 | 43-1263 + 43-1481 | ||
| 2004 | 2004 | 43-1543 | 43-1263 + 43-1481 | ||
| 2005 | 2005 | 43-1517 | 43-1519 + 43-1577 | ||
| 2006 | 2006 | 43-1727 | 43-1519 + 43-1577 | ||
| D | 1999 | 1999 | 43-1265 | ||
| 2000 | 2003 | 43-1327 | 43-1265 | ||
| 2002 | 2003 | 43-1409 | 43-1265 + 43-1493 | ||
| 2003 | 2004 | 43-1489 | 43-1265 + 43-1493 | ||
| 2005 | 2006 | 43-1591 | 43-1593 + 43-1577 | ||
| E | 1999 | 1999 | 43-1267 | Use 43-1265 | |
| 2000 | 2002 | 43-1329 | 43-1267 | Use 43-1265 | |
| 2003 | 2004 | 43-1495 | 43-1267 + 43-1499 | Use 43-1265 + 43-1499 | |
| F | 2005 | 2006 | 43-1571 | ||
| 2006 | 2006 | 43-1753 | 43-1571 | ||
| H | 2005 | 2005 | 43-1671 | 43-1605 + 43-1583 | Use 43-1605 + 43-1581 | 
| 2005 | 2007 | 43-1603 | 43-1605 + 43-1583 | Use 43-1605 + 43-1581 | |
| 2008 | 2008 | 43-1709 | 43-1711 + 43-1583 | Use 43-1699 + 43-1581 | |
| J | 2003 | 2004 | 43-1465 | 43-1285 + 43-1291 | |
| 2005 | 2005 | 43-1523 | 43-1599 + 43-1581 | ||
| 2005 | 2007 | 43-1597 | 43-1599 + 43-1581 | ||
| 2008 | 2008 | 43-1697 | 43-1699 + 43-1581 | ||
| K | 2005 | 2005 | 43-1529 | 43-1587 + 43-1291 | |
| 2005 | 2006 | 43-1635 | 43-1587 + 43-1291 | ||
| M | 1999 | 1999 | 43-1269 | 43-1285 + 43-1291 | |
| 2000 | 2004 | 43-1345 | 43-1285 + 43-1291 | ||
| N | 1999 | 1999 | 43-1275 | 43-1289 + 43-1291 | |
| 2000 | 2001 | 43-1641 | 43-1289 + 43-1291 | ||
| 2002 | 2002 | 43-1453 | 43-1289 + 43-1291 | ||
| 2003 | 2004 | 43-1483 | 43-1289 + 43-1291 | ||
| 2004 | 2004 | 43- | 43-1289 + 43-1291 | ||
| P | 2003 | 2004 | 43-1471 | 43-1261 + 43-1481 | Dup Codes | 
| 2004 | 2004 | 43-1445 | 43-1263 | Dup Codes | |
| S | 2003 | 2004 | 43-1471 | 43-1261 + 43-1481 | |
| Spring Code | Begin Year | End Year | SRI No. | Supersession | Notes | 
| REAR - F Series | |||||
| 1 | 1997 | 2000 | 43-1227 | 43-1233 | Use 43-1231 | 
| 2 | 1997 | 2003 | 43-1229 | 43-1233 | Use 43-1231 | 
| 3 | 1981 | 1982 | 43-687 | 43-807 | Use 43-721 | 
| 1983 | 1985 | 43-807 | Use 43-721 | ||
| 1986 | 1986 | 43-889 | 43-721 | ||
| 1997 | 2003 | 43-1231 | |||
| 2004 | 2004 | 43-1193 | Use 43-1199 | ||
| 4 | 1997 | 2000 | 43-1233 | Use 43-1199HD | |
| 5 | 1981 | 1982 | |||
| 1983 | 1986 | 43-809 | 43-721 | ||
| 6 | 1981 | 1991 | 43-689 | ||
| 1992 | 1994 | 43-1087 | 43-1225 | Use 43-879 | |
| 1999 | 2000 | 43-1433 | 43-1233 | Use 43-1231 | |
| 1999 | 2003 | 43-127 | 43-1233 | Use 43-1231 | |
| 2004 | 2004 | 43-1433 | 43-1233 | Use 43-1231 | |
| 7 | 1981 | 1983 | 43-691 | Use 43-695 | |
| 1984 | 1986 | 43-839 | |||
| 1987 | 1990 | 43-965 | |||
| 1991 | 1993 | 43-1053 | 43-965 | ||
| 8 | 1981 | 1986 | 43-693 | Use 43-879 | |
| 9 | 1981 | 1989 | 43-695 | ||
| 1992 | 1997 | 43-1055 | |||
| 2001 | 2003 | 43- | 43-1353 | ||
| 2003 | 2004 | 43-1353 | |||
| A | 1981 | 1991 | 43-689 | ||
| 1982 | 1982 | 43-699 | Use 43-803 | ||
| 1983 | 1995 | 43-803 | |||
| 1996 | 1997 | 43-1223 | Use 43-803 | Except 97 F150 | |
| 1997 | 2003 | 43-1185 | Except 97 F250, F350 | ||
| 2004 | 2004 | 43-1447 | 43-1199 | ||
| 2004 | 2004 | 43-1199 | |||
| B | 1997 | 2004 | 43-1187 | 43-1185 | |
| C | 1981 | 1981 | 43-713 | ||
| 1997 | 1997 | 43-1189 | 43-1297 | Use 43-1199 | |
| 1997 | 1998 | 43-1185 | |||
| D | 1981 | 1981 | 43-755 | Use 43-711 | |
| 1982 | 1985 | 43-767 | Use 43-769 | ||
| 1986 | 1986 | 43-755 | Use 43-711 | ||
| 1987 | 1993 | 43-883 | |||
| 1997 | 1998 | 43-1189 | 43-1297 | Use 43-1199 | |
| 1997 | 1998 | 43-1191 | 43-1297 | Use 43-1199 | |
| 1998 | 1999 | 43-1297 | Use 43-1199 | ||
| 2000 | 2001 | 43-1451 | Use 43-1199 | ||
| 2002 | 2004 | 43-1431 | Use 43-1199 | ||
| E | 1981 | 1981 | 43-711 | ||
| 1982 | 1985 | 43-769 | |||
| 1994 | 1994 | 43-1111 | 43-803 | ||
| F | 1981 | 1981 | 43-715 | 43-755 | Use 43-711 | 
| 1982 | 1982 | 43-771 | Use 43-769 | ||
| 1987 | 1994 | 43-879 | |||
| 1995 | 1995 | 43-1121 | 43-879 | ||
| 1996 | 1997 | 43-1225 | Use 43-879 | Except 97 F150 | |
| 1997 | 2004 | 43-1193 | 43-1297 | Use 43-1199 | |
| G | 1994 | 1994 | 43-1093 | 43-883 | |
| 1995 | 1997 | 43-1119 | Use 43-883 | ||
| 1997 | 1998 | 43-1195 | 43-1293 | Use 43-1199 | |
| 1997 | 2003 | 43-1293 | Use 43-1199 | ||
| 2004 | 2004 | 43-1231 | Use 43-1199HD | ||
| H | 1981 | 1981 | 43-719 | 43-709 | Use 43-711 | 
| 1982 | 1984 | 43-775 | |||
| 1985 | 1985 | 43-835 | Use 43-775 | ||
| 1986 | 1988 | 43-865 | Use 43-883 | ||
| 1994 | 1994 | 43-1095 | 43-721 | ||
| 1995 | 1997 | 43-1117 | 43-721 | Except 97 F150 | |
| 1997 | 2004 | 43-1197 | 43-1199 | Except 97 F250, F350 | |
| I | 1994 | 1997 | 43-1097 | 43-965 | |
| J | 1981 | 1981 | 43-709 | Use 43-711 | |
| 1982 | 1982 | 43-777 | Use 43-769 | ||
| 1993 | 1993 | 43-1079 | Use 43-883 | ||
| 1994 | 1997 | 43-1115 | Use 43-883 | Except 97 F150 | |
| 1997 | 2004 | 43-1203 | 43-1199 | Except 97 F250, F350 | |
| K | 1981 | 1982 | 43-707 | Use 43-723 | |
| 1983 | 1986 | 43-815 | Use 43-803 | ||
| 1994 | 1997 | 43-1099 | 43-689 | ||
| 1997 | 1997 | 43-1205 | 43-1185 | Except 97 F250, F350 | |
| 1999 | 2004 | 43-1205 | 43-1185 | ||
| L | 1981 | 1991 | 43-723 | ||
| 1992 | 1993 | 43-1047 | 43-723 | ||
| 1994 | 1997 | 43-1101 | 43-723 | Except 97 F150 | |
| 1997 | 2003 | 43-1207 | 43-1231 | Except 97 F250, F350 | |
| 2004 | 2004 | 43-1187 | 43-1185 | ||
| M | 1981 | 1986 | 43-713 | ||
| 2001 | 2003 | 43- | 43-1351 | ||
| 2003 | 2004 | 43-1351 | F150 Supercrew | ||
| 2004 | 2005 | 43-1353 | Except 04 F150 Supercrew | ||
| 2006 | 2006 | 43-1677 | 43-1679 | ||
| 2007 | 2008 | 43-1689 | 43-1679 | ||
| N | 1994 | 1997 | 43-1105 | 43-883 | Except 97 F150 | 
| 1997 | 1997 | 43-1199 | Except 97 F250, F350 | ||
| 1999 | 2004 | 43-1199 | |||
| 2004 | 2004 | 43-1447 | 43-1199 | ||
| P | 1994 | 1997 | 43-1107 | 43-883 | Except 97 F150 | 
| 1997 | 1998 | 43-1201 | 43-1199 | Except 97 F250, F350 | |
| 2004 | 2008 | 43-1629 | 43-1555 | ||
| R | 2004 | 2005 | 43-1361 | 43-1553 | Use 43-1555 | 
| 2006 | 2008 | 43-1679 | |||
| S | 1992 | 1993 | 43-1049 | 43-883 | |
| 1999 | 2004 | 43-1449 | Use 43-1199 | Except New Body 04 F150 | |
| 2004 | 2005 | 43-1559 | 43-1555 | New Body 04 F150 | |
| V | 1981 | 1981 | 43-753 | 43-709 | Use 73-711 | 
| 1982 | 1985 | 43-765 | Use 43-769 | ||
| 1986 | 1986 | 43-753 | 43-709 | Use 73-711 | |
| 1987 | 1991 | 43-891 | 43-883 | ||
| 1992 | 1992 | 43-1209 | 43-883 | ||
| 2003 | 2003 | 43-1227 | 43-1233 | Use 43-1231 | |
| 2003 | 2004 | 43-1433 | 43-1233 | Use 43-1231 | |
| W | 1981 | 1982 | 43-701 | ||
| 1983 | 1983 | 43-805 | 43-701 | Duplicate Code Coverage | |
| 1983 | 1983 | 43-841 | Use 43-701 | ||
| 1984 | 1986 | 43-803 | |||
| X | 1981 | 1981 | 43-717 | 43-709 | Use 73-711 | 
| 1982 | 1984 | 43-773 | Use 43-769 | ||
| 1985 | 1985 | 43-837 | Use 43-769 | ||
| Y | 1981 | 1981 | 43-693 | Use 43-879 | |
| 1987 | 1993 | 43-889 | 43-721 | ||
| 1999 | 2000 | 43-1233 | Use 43-1231 | ||
| Z | 1981 | 1981 | 43-723 | ||
| Ford F350 Leaf Springs | 

 
    
    
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