Home / Engine & Performance / Manley Valve Spring Seat, Spring CUP-OD 1.550 “ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT” has been added to your cart. View cart Manley Valve Spring Seat, Spring CUP-OD 1.550€ 126,28 Manley Valve Spring Seat, Spring CUP-OD 1.550 quantity Add to cart SKU: 42122-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 78.00mm 10.0:1 Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 78.00mm 9.0:1 Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 85.00mm 10.5:1 Bolts & StudsEngine & Performance ARP cabinet with SS hex accessory bolts