Home / Engine & Performance / Manley Valve Spring 1449 POLISHED “ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT” has been added to your cart. View cart Manley Valve Spring 1449 POLISHED€ 1.556,96 Manley Valve Spring 1449 POLISHED quantity Add to cart SKU: 221449P-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 85.00mm 9.0:1 Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 84.50mm 9.0:1 Bolts & StudsEngine & Performance ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT Bolts & StudsEngine & Performance ARP cabinet with SS 12pt accessory bolts