Manley Valve Spring Retainers for Gen III Hemi Steel
05-10 SRT8 300c, 06-10 Charger, 08-14 Challenger, 11-14 Charger, 11-14 SRT8 300c, 12-18 Jeep SRT, 15 Challenger, 15 Charger, 15 SRT 300c, Manley Performance
Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications. Locators are manufactured in our own CNC lathes. Heat treated and black oxided after machining. Valve locks are manufactured in our own Swiss turning centers with rigid control over the all-important angle to ensure precise mating with the retainer.
* These Chrysler Hemi springs come with shims which are ONLY needed for 6.1L applications on the intake side in order to achieve the correct installed height. P/N 221431 also includes a set of piloting rings that install over the factory Top Hat" integral valve seal to properly locate the ID of the spring on early 5.7L (thru 2008) and 6.1L applications.
- Item Requires Shipping
- 3.0 lbs.
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