303 Black Streak Remover is intended for targeted cleaning of black streaks and runoff dirt. Mariners Warehouse SKU 99440, manufacturer code 30243, supplies one 32 oz spray bottle.
Code 30243 is formulated for black-streak removal rather than a general protective coating. It targets deposited dirt and roof-runoff marks on suitable boat and RV surfaces. Manufacturer examples include fiberglass, vinyl, metal and painted surfaces. Confirm the actual finish and care instructions. A black streak can be deposited soil or a different condition, so persistent discoloration may need separate assessment.
The listed purchase supplies one 32 oz spray bottle. Separate accessories, treatment chemicals, applicators and larger package variants are not confirmed included. Match the exact care task and package before comparing related products or planning your order.
Shake well and apply only to a dry permitted surface. Spray the black streak, allow 2–3 minutes, gently agitate, then remove cleaner and loosened soil with a wet towel, microfiber cloth or sponge. Repeat if needed under the delivered label. Do not transfer the timing to other 303 formulas or present the cleaner as UV protection.
Clear Product Details
Review the 16 oz gel format, specifications and application directions.
Surface Guidance
Check fiberglass, gelcoat and finish suitability before use.
Product Support
Ask about your surface and stain type before ordering.
Shipping & Returns
Review shipping information and return conditions before purchase.
DECK & MULTI-SURFACE CLEANING
Plan Your 303 Black Streak Remover Use
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Confirm Material Fit
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Shake and Use a Dry Surface
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Spray the Target Area
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Allow 2–3 Minutes
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Wipe with a Wet Tool
Compare Product Role, Format & Package
Choose the Right Care Product
Frequently Asked Questions
What does SKU 99440 include?
This listing supplies one 32 oz spray bottle. The manufacturer code is 30243.
Should the surface be wet first?
No. Manufacturer directions say to use only on dry surfaces.
What working period is verified?
Manufacturer directions specify 2–3 minutes before gentle agitation and wet-tool removal.
Does it add a protective coating?
No protective-coating or UV-protection result is established for this cleaner.
Can it be used on a boat?
The manufacturer includes boats among intended applications, subject to exact material and label approval.
Is it the same method as 303 Multi-Surface Cleaner?
No. Use 30243’s specific preparation and directions; do not merge different formulas’ instructions.
Are separate tools or treatment products included?
The listed purchase supplies one 32 oz spray bottle. Separate accessories, treatment chemicals, applicators and larger package variants are not confirmed included.
How can I confirm the right product?
Contact Mariners Warehouse with SKU 99440, code 30243, the exact intended application and any unclear package or label details.
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