660" Dual Valve Spring Kit Steel- 4.8/5.3/6.0/Ls1/Ls2/Ls3

660" Dual Valve Spring Kit Steel- 4.8/5.3/6.0/Ls1/Ls2/Ls3. High Quality Assurance: 100% tested before shipment to ensure reliability. Steel Material Construction: Durable steel material ensures long-lasting performance. Versatile Engine Compatibility: Fits 4.8, 5.3, 6.0, LS1, LS2, and LS3 engines. Standard Component Type: Designed as a standard cylinder head component. Flexible MOQ Policy: Small orders accepted via express shipping. Trail Order Acceptance: Trial orders are welcome for new customers. Honest Service Commitment: Clients treated as friends with best service. Secure Payment Terms: 30% deposit via TT, balance before delivery.