Search  for anything...
Rust-Oleum

Rust-Oleum Automotive High Heat Primer Spray, Flat Gray

  • Based on 3,708 reviews
Condition: New
Checking for the best price...
$9.69 Why this price?

Buy Now, Pay Later

As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 8
Order within 2 hours and 19 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 12 Ounce (Pack of 1)


Features

  • High heat primer spray paint is designed for use on metal surfaces such as automotive engines, mufflers and more
  • Oil based paint with Stops Rust formula provides rust resistant base coat for cars, trucks and other vehicles
  • Covers up to 12 sq ft, dries to the touch in 30 minutes and can be topcoated in 1 hour
  • Spray paint offers outstanding heat resistance for metal surfaces up to 2000F
  • Flat finish can be covered with any topcoat with superior adhesion
  • Specially formulated to prevent rust and is recommended for use on automotive engines and other metal surfaces which reach intermittent temperatures up to 2000F (1093C).
  • Ideal for mufflers, head pipes and engine blocks
  • For best appearance, top coat with Rust-Oleum High Heat Paint
  • Any-angle spray technology allows the can to be sprayed in any direction, even upside down

Description

Rustoleum Automotive 249410 12 Oz Engine Primer Spray Paint, Gray Features: 12 oz spray paint Resists heat up to 500°F Perfect for using on automotive engines and other automotive surfaces Specifically formulated to prevent and stop rust Any angle spray comfort tip Gray. From the Manufacturer Rust-Oleum High Heat Primer bonds to bare metal and helps create a smooth top coat finish.

Brand: Rust-Oleum


Color: Gray


Finish Type: Matte


Size: 12 Ounce (Pack of 1)


Item Volume: 354.88 ml


Special Feature: Rust Resistant


Unit Count: 12 Ounce


Paint Type: Spray


Specific Uses For Product: Interior/Exterior


Surface Recommendation: Metal


Brand Name: Rust-Oleum


Paint Type: Spray


Specific Uses For Product: Interior/Exterior


Surface Recommendation: Metal


Indoor Outdoor Usage: Indoor


Item Form: Aerosol


Included Components: Rust-Oleum 249340 Automotive 12-Ounce High Heat Primer Spray Paint, Gray


Model Name: Automotive


Container Type: aerosol can


Full Cure Time: 1 hours


Coverage: see package


UPC: 020066188771


Global Trade Identification Number: 71


Manufacturer: Rust-Oleum


Age Range Description: Adult


Item Type Name: High Heat Primer Spray Paint


Item Weight: 340 g


Model Number: 249340


Part Number: 249340


Warranty Description: Satisfaction Guaranteed


Special Features: Rust Resistant


Is Waterproof: False


Size: 12 Ounce (Pack of 1)


Item Volume: 354.88 ml


Unit Count: 12 Ounce


Color: Gray


Finish Type: Matte


Color Code: 000000


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 8

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works great for high heated areas !!!
Size: 12 Ounce (Pack of 1)
Very durable, easy to use, scratch protection, bottle didnt leak when used, had a quick dry finish, used one bottle to cover all 4 brake calibers with some left over in the can, used for high heated area that covered everything i needed to be covered
Reviewed in the United States on August 13, 2026 by Hotchakalate Store Front
    • Yep
Size: 12 Ounce (Pack of 1)
Worked just fine
Reviewed in the United States on July 10, 2026 by jim
    • Handles the heat
Size: 12 Ounce (Pack of 1)
Used this on valve covers and it holds up to engine heat just fine. Dark grey color and dries fast. Same price as home Depot. Sprays a nice even coat just make sure you shake it a lot.
Reviewed in the United States on May 25, 2026 by Jarrod Overbey
    • Good product if you are willing to take the time to do it right.
Size: 12 Ounce (Pack of 1)
Works very well when certain common sense best practices are followed. Clean the part thoroughly, that means basic and acid washes beforehand, rough up surface (I used 60 grit) where applicable. Once clean always hold part with hanger or clean non-powdered gloves, after first coat, the same precaution needs to be adhered to. Coats should be thin and consistent. Ideally I would not move forward to final color coats with anything less than two complete prime coats. Part of the reason I coated my exhaust is that I am moving to a winter salt state, soooooo yeah, coat it or watch it rust into oblivion. I tend to go overboard on everything, so the whole system has 4-6 coats of primer depending on location and base metal, with 1-3 curing cycles (where possible), prior to color coats. Coverage is actually pretty good. After the priming process I sanded again after curing but prior to final color coat. I used black, but I imagine most colors (which are in no way true to color expectations or vibrancy... this stuff isn't jet-hot) will hold up the same depending on application and part cleanliness throughout the process. If applied and cured properly I see no reason why flaking, delamination, or "chipping" should be too much of an issue within reason. I'm a year into this job and as of my last oil change, I was able to fully inspect my work and found none of the above. I am happy with the product so far and it worth noting, this is NOT a thermal coating, it is purely protective.... and i suppose aesthetic for some. Time consuming to do right, but if the purpose is to protect your investment, well, take the time and do it right. Can you just go to town on an exhaust part and throw it on the car? Sure. Will it be as durable? Probably not. Take all of this as you will. ... show more
Reviewed in the United States on December 16, 2017 by Bif McSeriousCat
    • High Heat Primer
Size: 12 Ounce (Pack of 1)
Rust-Oleum quality
Reviewed in the United States on June 30, 2026 by gapi
    • Easy to use
Size: 12 Ounce (Pack of 1)
This primer lays out nice even if you are not a professional painter. With good prep work you can make a great foundation for painting with this product
Reviewed in the United States on June 21, 2026 by Amazon Customer
    • Does what is says
Size: 12 Ounce (Pack of 1)
I used the primer and also the same paint on the edges of my open steel kiln, and it survived multiple runs of heat treating knives at1600. No direct flame contact.
Reviewed in the United States on March 1, 2026 by Gary Norman
    • Rust-Oleum A name you can Trust
Size: 12 Ounce (Pack of 1)
Go's on quick drys fast easy to use spray performance upside down workis well and the tip didn't get clogged for the money and shipping fast looks great
Reviewed in the United States on July 5, 2026 by Bobby V

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...