The Speedmaster PCE470.1003 valve spring cups are precision-manufactured from hardened steel, measuring 1.560" outer diameter, 0.567" inner diameter, and 0.040" thick. Their hardened steel construction provides exceptional durability and resistance to wear under the repeated stress of valve spring operation, helping maintain consistent valve train geometry over the life of your engine build.
Designed to seat valve springs securely, these cups help protect cylinder head surfaces and distribute spring load evenly for reliable performance. Whether you're assembling a performance street engine or a dedicated racing build, these hardened steel valve spring cups deliver the precision and toughness your valve train demands.