Sierra 18-7467 - O-Ring, Replaces Mercury 25-54030
Sierra 18-7467 - O-Ring, Replaces Mercury 25-54030
Sierra
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Sierra 18-7467 - Replacement O-Ring for Mercury 25-54030 and OMC 509008
The Sierra 18-7467 O-ring is an aftermarket replacement cross-referenced to Mercury 25-54030 and OMC / Johnson / Evinrude 509008. These references provide a precise starting point when replacing the sealing component specified in your assembly's parts diagram. Confirm the installed assembly and required part number before ordering; the cross-brand references do not establish universal engine compatibility.
Part Specifications
- Part Number: 18-7467
- Component: Replacement O-ring
- Replaces Mercury: 25-54030
- Replaces OMC / Johnson / Evinrude: 509008
Confirm Fitment Before Ordering
Use the parts diagrams available on our website to help identify the correct O-ring and its position in the assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Include identification details for any replaced or modified assembly.
Additional Information
- Vendor: Sierra
- Part Number: 18-7467
- OEM Cross-Reference: Mercury 25-54030 and OMC / Johnson / Evinrude 509008
Installation Notes
Refer to the applicable engine and assembly service manual for O-ring replacement requirements and specifications.
Frequently Asked Questions
Q: Does Sierra 18-7467 replace Mercury 25-54030?
A: Yes. Mercury 25-54030 is a listed OEM cross-reference; confirm it matches the required part in your assembly's diagram.
Q: Is OMC / Johnson / Evinrude 509008 also listed?
A: Yes. Part number 509008 is the listed OMC / Johnson / Evinrude replacement reference.
Q: Does the cross-brand listing mean it fits every engine from those brands?
A: No. Fitment depends on the specific assembly calling for one of the listed part references, not the engine brand alone.
Q: Is this an OEM-branded O-ring?
A: This product is the Sierra aftermarket replacement, identified by Sierra part number 18-7467.
Q: How can I confirm the correct O-ring before ordering?
A: Check the parts diagrams on our website or send your engine model, serial number and relevant assembly identification details by email, text or live chat for confirmation.
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.