Can you spray this over rust? And if you can, won't this spray just coat the rust while the rust eats away the metal underneath?

Don't spray it over rust, treat or repair the rust first. More than one undercoating job has actually made rust worse by trapping water and it eats away from the inside out and you'd never know until something falls apart.

I am considering using this product on my Jeep plastic fenders and bumpers. Has anyone done this?

I used this to undercoat the cab fenders and running boards on my 49 Chevy pickup but they were steel not sure about plastic.

How long does it take to dry?

It took about 24 hours to fully dry. That was in 100° weather too.

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3M - 03584-6PK Professional Grade Rubberized Undercoating, 03584, 16 oz

3M - 03584-6PK Professional Grade Rubberized Undercoating, 03584, 16 oz

Product ID: 12920598

Details

Brand
3M
Color
Black
Finish Type
Eggshell
Size
2.67 Ounce of
Item Volume
16 Fluid
Special Feature
Crack

🔇Sound deadening tech

🚿Easy spray-on aerosol

🛡️Rust & abrasion shield

R$1071

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Description

🛠️ Protect your ride like a pro — silence, shield, and style in one spray!

QUIETER RIDES AHEAD - Rubberized formula reduces road noise for a premium driving experience
ULTIMATE RUST DEFENSE - Seals out moisture and grit to extend vehicle life
EFFORTLESS APPLICATION - Aerosol spray lets you protect your ride with precision and ease
VERSATILE VEHICLE ARMOR - Perfect for wheel wells, fenders, undercarriage, and more
PROFESSIONAL GRADE RELIABILITY - Trusted by industry pros for durable, long-lasting protection

3M 03584 Professional Grade Rubberized Undercoating is a 16 oz aerosol coating designed to protect cars, trucks, and recreational vehicles from rust, abrasion, and road noise. Its versatile asphalt-based formula is ideal for undercarriages, wheel wells, and fenders, providing a durable, sound-deadening barrier that extends vehicle lifespan. Engineered for industrial use, it offers easy spray-on application trusted by professionals.

Specifications

ASIN	B005W0OXUG
Best Sellers Rank	#436,176 in Automotive ( See Top 100 in Automotive ) #169 in Automotive Primers
Customer Reviews	4.6 4.6 out of 5 stars (402)
Department	unisex-adult
Item Weight	1.35 pounds
Item model number	03584-6PK
Manufacturer	3M
Product Dimensions	10.1 x 8.4 x 5.6 inches

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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R$1071

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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