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Vehicle Info NeededMANLEYPART NUMBER: 660-221439-1
Super Finished NexTek H.P. Valve Spring 6.4L HEMI
$2790
Ships on 09/09/2026
Lowest Price GuaranteeChrysler 6.4L HEMI
- NexTek H.P. Valve Spring
- 6.4L HEMI
- 1.311'' O.D.
- 0.650'' I.D.
- 353 lbs./in. Spring Rate
- 145 @ 1.811'' Installed
- 380 @ 1.150'' Open
- 0.650'' Max Valve Lift
- 1.100'' Coil Bind
- Single Conical Ovate Wire
- 1/pkg.
Chrysler 6.4L HEMI high performance hydraulic roller applications.
- Type of Spring: Super Finished Single Conical Ovate Wire
- Color Code: N/A
- Installed Height and Pressure: 1.811' @ 145 lbs./in.
- Open Height and Pressure: 1.150' @ 380 lbs./in.
- Spring Rate: 353 lbs./in.
- O.D. of Outer Spring: 1.076' Top / 1.311' Bottom
- I.D. of Outer Spring: 0.650' Top / 0.885' Bottom
- I.D. of Middle Spring: N/A
- I.D. of Inner Spring: N/A
- Coil Bind height: 1.100'
- Weight: 72 grams
- Damper Included: No
Click Here to see 660-221439 Valve Spring Load Chart
Part TypeValve Spring
BrandMANLEY
Part CategoryPerformance Parts
Installed Height (In)1.811 in.
Open Height (In)1.150 in.
QuantitySold individually
Seat Pressure At Installed Height (Lbs)145 lbs.
Part FitmentSemi Universal
Spring Rate (Lbs/In)353 lbs./in.
Coil Bind Height (In)1.100 in.
Valve Spring StyleConical ovate wire
Open Pressure (Lbs)380 lbs.
Package Qty1
Package TypeEA
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