1985-87 Fieros use the same springs. 1984's use some of the same rear springs (all but one) as the 85-87's but different front springs. 1988's use entirely different springs.
REAR SPRINGS:
(EXC WS6) CODE (W/WS6) CODE
-------------------------------
1984 10029092 NWY (Stiffest)
10029091 NWX |
10029090 NWW (Softest)
1985-87 10030180 NXD 10034976 NYM (Stiffest)
10029092 NWY 10034975 NYL |
10029091 NWX 10034974 NYK |
10029090 NWW 10034973 NYJ (Softest)
1988 ALL CODE
---------------
10053695 PUD (Stiffest)
10053694 PUC |
10053693 PUB |
10053692 PUA (Softest)
FRONT SPRINGS:
(EXC WS6) CODE (W/WS6) CODE
-------------------------------
1984 10029670 DMF 10029675 DMN (Stiffest)
10029669 DMD 10029674 DMM |
10029668 DMC 10029673 DMK |
10029667 DMB 10029672 DMJ |
10029666 DMA 10029671 DMH (Softest)
1985-87 10034097 FJA 10034102 FJH (Stiffest)
10034096 FHZ 10034101 FJF |
10034095 FHY 10034100 FJD |
10034094 FHX 10034099 FJC |
10034093 FHW 10034098 FJB (Softest)
1988 ALL CODE
---------------
10048402 FPJ (Stiffest)
10048401 FPH |
10068654 ARD |
10068653 ARC |
10068652 ARB (Softest)
The codes can be found on a paper tag on the spring or on the Service Parts Identification Label on the left front inner fender. The spring codes for my 85 GT from the label are; 6JH, 7JH, 8YM and 9YM (JH = FJH, YM = NYM)
6 code = left front spring code
7 code = right front spring code
8 code = left rear spring code
9 code = right rear spring code
From: Scott Backer