EQUIPMENT REPLACEMENT PART PRE-CHECK

Check the fit.
Before you buy.

FitXref is a free, source-backed pre-check for replacement equipment parts. Pick your equipment below, enter the nameplate or spec fields for your existing part and the one you are about to buy, and see exactly which fields match, which differ, and which you still need to verify — before the order ships.

30official cross-reference groups
168model pages
8field guides
✓every claim sourced
What we do: free field-by-field pre-checks against official cross-reference sources, so you can spot a wrong part before you pay for shipping or a restocking fee.

What we don't do: we are not a compatibility, safety, wiring, or installation certification, and we don't sell parts ourselves. A field match here is a reason to keep going, not a reason to skip a qualified installer's sign-off.

PICK YOUR EQUIPMENT

Every category answers the same question.

POOL EQUIPMENT

Pool Pump Motors

Compare a candidate replacement motor against 30 official Nidec / U.S. MOTORS alias groups, then run a full nameplate field pre-check.

Live

WELL EQUIPMENT

Well Pump Pressure Switches

Look up pressure switch cut-in/cut-out settings, wiring, and replacement compatibility for residential well pump systems.

Live

SOLAR EQUIPMENT

Solar Charge Controllers

Brand-to-brand compatibility for solar charge controllers and battery banks. In research — not yet open.

Coming soon

How a pre-check works

Each category starts from a real manufacturer cross-reference or official specification, never a guess. Enter what's printed on your existing part's nameplate, then the seller's listed spec for the replacement. FitXref lines the fields up side by side and tells you plainly: same, different, or unknown.

Reference only, always

  • Every query is free — there is no account, paywall, or query limit.
  • Technical claims cite a manufacturer document or a named professional community.
  • A match is a purchase pre-check, not a safety or installation approval.
  • Some outbound links are affiliate links — see our affiliate disclosure.