100%
Spectre Performance 3991 Black 9mm Breather Filter
by Spectre Performance— Made in Corona, CA
Verified American Made
American Score
87% — High
Why not 100%? Full verification requires additional independent sources
Manufactured in Corona, CA
Manufacturing in USA since 1983Verified through 3 independent sources
- Known factory location
- Brand website
- Product listing (state)
Evidence Breakdown
Factory: City-level verified
Website claim: Yes
History: Established
Overseas lines: None known
Black 9mm crankcase breather filter by Spectre Performance. Made in California. Prevents oil vapor from entering intake. 10mm flange, 2-inch outer diameter.
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Spectre Performance 3991 Black 9mm Breather Filter
87% American Score