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MSD promises to keep a lid on poor spark plug wire performance with their replacement cap retainers. Designed for their innovative Pro-Caps, these retainers assure that performance potential stays at maximum levels by keeping your wires firmly attached to the terminals. Loose plug wires make poor connections for efficiency. Stay wired for performance; trade your damaged--or missing--Pro-Cap retainer plates with replacement spark plug wire retainers from MSD.
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$46.09
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