303 Automobile Tonneau Cover & Convertible Top Cleaner 30571 is a cleaning product for suitable fabric and vinyl convertible tops, truck tonneau covers and car bras. Mariners Warehouse SKU 79935 supplies one 16 oz spray bottle. Select it for soil removal and preparation under the exact cover or top maker’s care instructions.

The cleaner lifts appropriate dirt, stains and environmental grime, with manufacturer-described residue-free rinsing under correct use. Cleaning prepares the surface for a separately selected protective treatment; it does not itself establish renewed fabric water repellency, UV protection or repair of torn fabric, seams and coatings. Identify fabric versus vinyl before deciding on follow-up care.

Rinse thoroughly to remove loose soil, then apply cleaner while the surface remains wet. Agitate lightly with a damp suitable sponge, towel or top-cleaning brush and rinse fully with clean water before the surface dries. For tougher stains, manufacturer guidance allows a 10–20-minute work period before gentle scrubbing and rinsing, subject to the exact label and conditions; never let the cleaner dry in place. Complete drying as the material requires before applying a separate approved protectant.

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.

Application Guides

Plan Your 303 Automobile Tonneau Cover & Convertible Top Cleaner Use

Confirm the exact item, task, surface and included quantity before starting.

Top Cleaner or Fabric Guard?

30571 cleans appropriate fabric and vinyl tops through a wet-surface, rinse-off process. Fabric Guard is a separate water-repellent treatment for its own approved clean, fully dry fabrics. Cleaning and protective treatment are different stages with different working conditions.

For a permitted vinyl top, evaluate the appropriate vinyl protectant rather than assuming a fabric treatment fits the material. A compatible protectant and soft cleaning tools are separate purchases. Check both product labels and the exact top maker’s care requirements before planning a sequence. Review the 303 Marine Fabric Guard - 16oz MPN - 30616 as a separately sold option.

Continue Your Care-Product Selection

Choose a product family by your actual task and verify every selected item separately.

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Frequently Asked Questions

What does SKU 79935 include?
One 16 oz spray bottle. The manufacturer/pack code is 30571.
Which surfaces are identified?
Suitable fabric and vinyl convertible tops, tonneau covers and car bras, with exact material/coating approval checked.
Should the top be dry when applying?
No. Rinse first and apply the cleaner while the surface remains wet under its directions.
How should I agitate?
Use light agitation with a suitable damp sponge, towel or top-cleaning brush that the material permits.
Can the cleaner dry on the top?
No. Rinse thoroughly with clean water before the surface dries.
What is the tough-stain timing?
Manufacturer guidance describes 10–20 minutes before gentle scrubbing and rinsing, under the exact label and conditions; do not let cleaner dry.
Does this bottle include protective treatment?
No. Fabric Guard or a suitable vinyl protectant is a separate product and care stage.
How can I confirm the right selection?
Contact Mariners Warehouse with SKU 79935, code 30571, your actual material or equipment and the intended task.

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