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Peterson Fluid Systems water neck spacer 1 configured with two -6 AN ports is machined from billet aluminum and features an O‑ringed flange that can accommodate a thermostat. This spacer gives a compact way to route cylinder head water lines using -6 AN fittings while maintaining proper sealing and thermostat placement in modified cooling setups.
Peterson Fluid Systems Water Neck Spacer 1 2 x -6AN
