Home / Cylinder Head / Manley Valve Spring 1449 POLISHED “Chevy Duramax 6.6L diesel CA625+ custom age HSK” 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 Bolts & StudsEngine & Performance ARP cabinet with SS 12pt metric accessory bolts Engine & PerformanceTurbochargers Haltech Turbosmart GenV eWG50 Progate 50 Bolts & StudsEngine & Performance ARP cabinet with SS 12pt accessory bolts Bolts & StudsEngine & Performance ARP cabinet with black hex accessory bolts