Home / Engine & Performance / Manley Valve Spring 1.550 DOUBLE “Haltech Turbosmart GenV eWG50 Progate 50” has been added to your cart. View cart Manley Valve Spring 1.550 DOUBLE€ 1.130,26 Manley Valve Spring 1.550 DOUBLE quantity Add to cart SKU: 221452SF-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Bolts & StudsEngine & Performance ARP FORD 6.7L Powerstroke diesel CA625+ head stud kit Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 78.00mm 9.0:1 Bolts & StudsEngine & Performance Chevy Duramax 6.6L diesel CA625+ custom age HSK Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 84.50mm 9.0:1