• 1. valve spring retainer lock: 阀弹簧锁夹 | 气门弹簧锁销
• 2. lock valve spring retainer: 气阀弹簧锁头

• 1.Valve Guide, Valve Seat, Valve Lock, Valve Spring Retainer, Casting Products.
  气门导管，气门座圈，气门锁片，气门弹簧座，铸件系列。
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