Boeing® Pressure Switch Assembly 21C1-3-21
Bottom line: stock is on the shelf, lock in a quote with trace documents today.
21C1-3-21 shows 8 offers from 6 suppliers with stock ready to ship. For AOG and tight maintenance windows this is the profile you want: confirmed availability instead of open-ended lead times.
Price guidance: $1,800 - $4,250, depending on condition (NE, NS, SV). In-stock parts move fast, so lock in a quote with trace documents early instead of re-sourcing mid-repair.
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