NAPA Gold 7356 Oil Filter

Confirm the baseplate design your engine's filter boss uses before ordering. NAPA's own catalog treats the 7356 as the current, flat-baseplate generation within its OE cross-reference family, superseding the older convex-baseplate 1356. Multiple independent sources document a thread-bottoming and under-compression leak risk when the older 1356 is used on a newer flat-baseplate boss with an integrated hex nut; the 7356 avoids that specific risk. If your OE part number is 15400-PLM-A01, 15400-PLM-A02, or 15400-RTA-003, the 7356 is the documented correct match.

Yes. Six or more independent, dated owner cut-open reports spanning roughly 4,000 to 16,000 miles of service confirm a functioning silicone anti-drain-back valve, with no dry-start or bypass failures reported across any of them. One forum report of an unusual-looking bypass component was resolved by the community as a normal part of the design, not a defect.

This listing's own spec data states only a bare 19-micron flow-rate figure with no named test method. The manufacturer's ISO 4548-12 laboratory result (99% efficiency at 23 microns) is published for this filter's identical physical part sold under the WIX 57356 identity; no independent third-party lab has verified that figure for either brand label.

Not directly disclosed on this specific listing. The identical physical part, sold under the WIX 57356 identity, carries a manufacturer-published 8-11 PSI bypass setting and a 363 PSI burst rating.

Standard cellulose media, per the manufacturer's own spec field and an independent retailer's structured spec page. It is not a synthetic-blend media; NAPA's Platinum tier is the synthetic-media, extended-drain option in the NAPA filter lineup.