12 oz. Marine Engine Combustion Cleaner | Sierra 18-9580-3
12 oz. Marine Engine Combustion Cleaner | Sierra 18-9580-3
Sierra
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Improves engine efficiency & removes internal carbon deposits from marine engines.
- Sierra combustion cleaner fuel additive
- Dissolves gum and varnish build up in fuel system
- Frees sticky piston rings
- Displaces moisture in fuel
- Can be used as a fuel stabilizer for winter storage
- For use in both 2-cycle & 4-stroke marine engines
- Mix 1 to 2 ounces to every one gallon of gasoline
- 12 ounce bottle
! 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.