Water Pump Thermostat Housing Bolt Kit Fits for 1997-2014 LS Series... About this item Items Included : This kit includes 6 flange hex head bolts for securing the water pump to the engine block and 2 flange bolts for attaching the thermostat housing to the water pump. These JIS spec bolts come with integrated flanged heads, so no additional washers are required. Compatibility: This water pump bolts kit is compatible with LS Series engines from 1997 to 2014, including LS1, LS2, LS3, LS6, LS7, LS9, and engines (4.8L, 5.3L, 6.0L, 6.2L). The metric flange bolts are also compatible with LSX, LM7, LR4, LQ4, LQ9, L33, LH6, L92, L76, L99, L96, L82, L83, L84, L86, and L87 engines. Premium Quality: Crafted from premium steel, this bolt kit features heavy-duty, high-strength grade 10.9 bolts, offering exceptional durability and superior corrosion resistance for long-lasting performance. Dacromet Coating: This bolt features Dacromet coating, offering superior corrosion resistance. Ideal for harsh environments like high humidity, salt spray, or high temperatures, the Dacromet process creates a durable, eco-friendly protective layer without hydrogen embrittlement risks. Ensures long-lasting performance and reliability.