Home / Engine & Performance / Manley Valve Spring 1.580 DOUBLE “ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT” has been added to your cart. View cart Manley Valve Spring 1.580 DOUBLE€ 740,21 Manley Valve Spring 1.580 DOUBLE quantity Add to cart SKU: 221443-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Bolts & StudsEngine & Performance ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 78.00mm 10.0:1 Engine & PerformanceTurbochargers Haltech Turbosmart GenV eWG50 Progate 50 Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 84.50mm 9.0:1