660" Dual Valve Springs Kit w/Steel Retainers Fit for GM LS1 LS2 LS3 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L 6.2L Gen III IV Engines #Replaces SK001 SK001S

[Fitment]: This kit is wide compatibility& covers all popular LS Engines Fits for all GM Gen III and Gen IV LS series V8 engines: fit for LR4, LY2, L20 4.8L fit for LM7, L59, LM4, L33, LC9, LH6, LY5, LMG 5.3L fit for LS1, LS6 5.7L fit for LQ4, LQ9, LS2, L76, L98 6.0L fit for LS3, L92, L99 6.2L Important Note:Not compatible with LS7/LS9/LSA and any Gen 5 LT1/4 engine applications, and most aftermarket cylinder heads with bronze guides [Package Includes]：.16 x 660" Dual Valve Springs; .16 x Hardened Steel Spring Retainers; .16 x Viton Valve Stem Seals; .32 x Valve Lock

• [Fitment]:This kit is wide compatibility& covers all popular LS Engines Fits for all GM Gen III and Gen IV LS series V8 engines: fit for LR4, LY2, L20 4.8L fit for LM7, L59, LM4, L33, LC9, LH6, LY5, LMG 5.3L fit for LS1, LS6 5.7L fit for LQ4, LQ9, LS2, L76, L98 6.0L fit for LS3, L92, L99 6.2L Important Note: LS7 engines require the addition of 0.045"" shims to use. Not compatible with LS9/LSA and any Gen 5 LT1/4 engine applications, and most aftermarket cylinder heads with bronze guides
• [Replace part number]: SK001 SK001S
• [Package Includes]：16 x 660" Dual Valve Springs; 16 x Hardened Steel Spring Retainers; 16 x Viton Valve Stem Seals; 32 x Valve Lock
• [Customer Service ]Your purchase is backed by our 1-year customer service guarantee. If you have any questions regarding installation, fitment, or performance, simply contact us and we will provide a solution, allowing you to buy with complete confidence.
• [Notice] Please check replace part number and fitment information to verify this is the correct one you need before purchasing.
• [High-Quality Materials, Built to Last]: Our valve springs undergo precision heat treatment and shot peening strengthening, delivering exceptional fatigue resistance and extended service life. Every component is subjected to rigorous dimensional inspection and quality control to prevent air leakage and excessive oil consumption. This makes them a cost-effective choice for routine repairs on LS series engines.