OEM Number: manufacturer part number for reference are 6100FP, 6101FP. OEM: 6100FP, 6101FP. They have a 1in tube for a 1‑1/4in bonnet hole. 1pc Breather with built in PCV. Durable Material: Finned valve cover breather is made of aluminum and steel material, which is rustproof, high temperature resistant, and not easy to break.
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