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sptSPRK-FE20BE
Supertech Ford/Mazda DURATEC 2.0L/2.3L Beehive Valve Spring Kit (Use OEM Retainer/OEM Seat)
sptSPRK-TS-DUR-DS
Supertech Ford/Mazda Duratec Single Valve Spring Kit - 55lbs at 35mm
sptSPRK-EC3025D
Supertech GM ECOTEC 2.0L Dual Valve Spring Kit (Requires Smaller Seal)
sptSPRK-H1002D
Supertech Honda B16/B18C Dual Valve Spring Kit (w/Titanium Retainers)
sptSPRK-H1002D-ST
Supertech Honda B-Series Dual Valve Spring Kit
sptSPRK-H100DR-ST
Supertech Honda B-Series Dual Valve Spring Kit (Set of 16)