Home / Engine & Performance / Manley Valve Spring 1.311 SINGLE HEMI “Haltech Turbosmart GenV eWG50 Progate 50” has been added to your cart. View cart Manley Valve Spring 1.311 SINGLE HEMI€ 624,42 Manley Valve Spring 1.311 SINGLE HEMI quantity Add to cart SKU: 221431-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Bolts & StudsEngine & Performance ARP cabinet with SS hex accessory bolts Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 78.00mm 10.0:1 Bolts & StudsEngine & Performance ARP cabinet with black hex accessory bolts Bolts & StudsEngine & Performance ARP cabinet with accessory bolts