3.5L - V6 - DOHC 24 Valve (VQ35) Type/Material/Application: Single Spring - Special Alloy - Turbo - Endurance Application Outside Diameter: 25.19 Inside Diameter: 18.3 mm Seat Pressure: 75 lbs @ 34.8 mm Open Pressure: 145 lbs @ 24.8 mm Rate Inch: 178 lbs Coil Bind: 20.5 mm Max Net Lift: 12.5 mm This Spring to be used with Factory Valves with recess tip and Ferrea Titanium Retainer # E11060 and Factory supplied Spring Seat Locator
3.5L - V6 - DOHC 24 Valve (VQ35) Type/Material/Application: Single Spring - Special Alloy - Turbo - Endurance Application Outside Diameter: 25.19 mm Inside Diameter: 18.3 mm Seat Pressure: 85 lbs @ 34 mm Open Pressure: 155 lbs @ 24 mm Rate Inch: 178 lbs Coil Bind: 20.5 mm Max Net Lift: 12.5 mm This Spring to be used with Ferrea Lightweight Valves without recess tip and Ferrea Titanium Retainer # E11058 and Ferrea Spring Seat Locator # SL1048
4.8L 6 Cyl. In-Line - 24 Valve - (TB48DE) Type/Material/Application: Single Spring - Special Alloy Outside Diameter: 28.0 mm Inside Diameter: 20.8 mm Seat Pressure: 73 lbs @ 35.85 mm Open Pressure: 155 lbs @ 25.85 mm Rate Inch: 208 lbs Coil Bind: 22.85 mm Max Net Lift: 12 mm This Spring requires Ferrea Titanium Retainer # E11109 and Ferrea Spring Seat Locator # SL1070 (Discard OEM Factory supplied Spring Seat Locator.)
3.8L V6 - DOHC 24 Valve (VR38DETT) Type/Material/Application: Single Spring - Special Alloy Outside Diameter: 25.19 mm Inside Diameter: 18.3 mm Seat Pressure: 90 lbs @ 35 mm Open Pressure: 160 lbs @ 25 mm Rate Inch: 177 lbs Coil Bind: 22.65 mm Max Net Lift: 11 mm This Spring requires 2 Ferrea Titanium Retainer (EXHAUST) # E11110 and (INTAKE) # E11107 and Ferrea Spring Seat Locator # SL1116. (Discard OEM Factory supplied Spring Seat Locator.)
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