Stop Rust Kit

Stop Rust System for Small Projects

item(s): 40909

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POR-15 Stop Rust Kit - Stop rust like a pro!

The POR-15 3-Step Rust Preventive System cleans, preps, and coats metal to stop rust permanently.

P.O.R. Products is known for formulating products with the capabilities of creating complete systems for various automotive restoration needs. The POR-15 3-Step Rust Preventive System is designed to stop rust on metal surfaces and ensures the best results when applying POR-15 Rust Preventive Coating. The clear-cut process allows for the proper cleaning, prepping, and coating; and when used correctly, our 3-Step System creates a non-porous surface that seals and protects metal from water, chemicals, salt, battery acid, fertilizers, and other corrosive contaminants. Black and Gray Rust Preventive Coatings are non-conductive and good for EV conversion applications. Top coating is required if surface is exposed to UV light.

This surface rust repair kit is available in two colors, Gloss Black and a glossy Gray. When top coating the rust preventive coating with light colors or black, it is best to use Gray. Using Gray will allow you to see any missed coverage easily.

* Replaces POR-15 Super Start Kit

Great for small parts and touch-ups! Stop rust in projects like:

Control Arms, Axles, Trailer Hitch

Everything you need in one kit to stop rust permanently.

  • 8 oz bottle POR-15 Cleaner Degreaser
  • 8 oz bottle POR-15 Metal Prep
  • 4 oz can POR-15 Rust Preventive Coating
  • Paintbrush, Foam Applicator, Latex gloves
  • Detailed instructions and tips


  • Covers a 6 sq. ft. area with two coats
  • Ideal for small projects such as small subframes, axle replacements, control arms, brake shields, and more
  • Cost-effective price for three premium POR-15 products
  • Includes POR-15 Cleaner Degreaser to remove dirt, grease, wax, and other contaminants
  • Includes POR-15 Metal Prep to neutralize rust, etch metal, and coat with a zinc phosphate surface
  • Includes POR-15 Rust Preventive Coating for a hammer-tough finish resistant to most acids and alkalis, and repels all fuels and oils

POR-15 Stop Rust Kit Technical Data Sheet

The components of the POR-15 3-Step Rust Preventive System

Step 1 POR-15 Cleaner Degreaser
Step 1 - Clean it!: POR-15® Cleaner Degreaser(Formerly Marine Clean) removes grease, oil, dirt, and grime in one application without leaving residues, noxious fumes, or flammable solvents.

Step 2 POR-15 Metal Prep
Step 2 - Prep it!: POR-15 Metal Prep (Formerly PREP & READY) provides the best adhesion for POR-15 Rust Preventive Coating on any metal surface, including shiny polished metal surfaces.

Step 2 POR-15 Rust Preventive Coating
Step 3 - Coat it!: POR-15 Rust Preventive Coating is a high-tech, high-performance rust preventive coating designed for application directly on stable rust or seasoned metal surfaces. Provides permanent rust protection with a hammer-tough finish resistant to acids, alkalis, and repels all fuels and oils. Top Coat if exposed to UV light.

WARNING: Cancer -

Customer Reviews

Based on 132 reviews
Michael Staley
Very satisfied very

Very happy with information about product and a militate salesman, super happy about results.

Robbie Rankin
Works as advertised

Got the 3 part kit and followed the instructions to the letter on my trailer hitch. Kind of encapsulated it. Seems super tough do far

Jeff Wendt
Great Primer

This stuff works great for my small rust spot repairs.

John Norman

Have not been able to apply due to the amount of rain that we have been receiving. I will give it a review when it dries out. But it did arrive in a timely manner.


Order fulfilled in a timely manner.

Metal that is media blasted provides the best surface for coatings. If not possible, remove all built-up dirt, loose rust, and paint. Note that if you leave old paint behind, the rust preventive can only adhere as strongly as the paint it is applied over. This generally is not as strong as applying to prepped and scuffed-up bare metal.

These products should only be handled when wearing latex gloves, eye protection, and NOSHA approved respirator. Always work in a well-ventilated area. 

Step 1. Remove all loose rust, paint, grease, dirt, and contaminants. Roughen smooth surfaces with 180 grit sandpaper or scuff pad. Apply POR-15 Cleaner Degreaser to a surface, agitate the surface with a scuff pad or brush and keep wet 10-15 minutes then rinse thoroughly with water and allow the surface to dry. Repeat if surface is still oily or greasy. It is important not to allow the product to dry on the surface prior to rinsing with water. POR-15 Cleaner Degreaser is a heavy duty water soluble cleaner that may be used over metal, wood, fiberglass, vinyl and concrete.

Step 2. Apply POR-15 Metal Prep to the bare metal surface, keep wet 20-45 minutes, then rinse thoroughly with water and allow the surface to dry. It is important not to allow POR-15 Metal Prep to dry on the surface prior to rinsing with water. Once dry the surface may show a flash rust or a white powdery residue, this is perfectly normal. POR-15 Metal Prep provides the best surface profile and greatly improves paint adhesion to any type of metal surface for opaque paints and coatings.

Step 3. Wearing gloves and a properly fitted NOSHA approved respirator is recommended when applying POR-15 Rust Preventive Coating. Do Not shake. Mix by stirring until all solids at the bottom of the can are dissolved. Mixing may be done with a drill mixer on slow or by hand. It is recommended to apply two thin covering coats of POR-15 Rust Preventive Coating. Apply the first coat to the properly prepared substrate with the supplied brush. Apply the second coat when the first coat is dry but still slightly tacky to the touch. If POR-15 Rust Preventive Coating is applied too heavy, brush marks may result in the finish. Do not apply this product if the humidity is above 70%. If the humidity is too high POR-15 Rust Preventive Coating will surface dry too quickly which may result in small bubbles in the finish. POR-15 Rust Preventive Coating requires an opaque topcoat only if exposed to direct sunlight. Best chemical adhesion to POR-15 Rust Preventive is when it is dry but still tacky (it has a finger drag). If the rust preventive is already completely dried or cured, you must scuff the surface with a maroon pad or 240-320 grit sandpaper for mechanical adhesion of a topcoat.

If your project will be exposed to U.V. light, topcoat it with POR-15 TopCoat, Engine Enamel, Caliper Paint, Detail Paint, or 2K Urethane industrial topcoat. You can topcoat with most other UV safe opaque paint as well.