Item # 12515Z-15275Z BRAND: Eastwood

Eastwood Internal Frame Coating 14 oz Aerosol

Destroys rust hiding inside chassis so it won't rust through
Destroys rust hiding inside chassis so it won't rust through
Eastwood Internal Frame Coating 14 oz Aerosol is rated 4.0 out of 5 by 38.
  • y_2022, m_10, d_5, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.34
  • cp_3, bvpage2n
  • co_hasreviews, tv_1, tr_37
  • loc_en_US, sid_12515Z-15275Z, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_eastwood
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getAggregateRating, 51.06ms
Grouped product items
Product Name Qty
Eastwood Internal Frame Coating Aerosol Green
In Stock
Eastwood Internal Frame Coating Aerosol Black
In Stock

Starting at$28.99

Save for Later
Destroys rust hiding inside chassis so it won't rust through

90 day Warranty Included

100% Satisfaction Guarantee Since 1978
We stand behind our solutions and customers.

  • • 90 Day Returns
  • • Lifetime Tech Support
Eastwood Internal Frame Coating 14 oz Aerosol

Product Overview:


Internal Frame Coating destroys rust hiding inside the chassis, so it doesn’t rust its way through

Stop Hidden Rust with Eastwood

Leave every inch of a classic vehicle rust-free with Eastwood Internal Frame Coating that takes on the toughest challenges. During your restoration, you have almost certainly have applied a car undercoating to stop water and moisture from rusting the underside. However, there’s often rust hiding inside the frame that can ruin the vehicle’s structural integrity. Use our Internal Frame Coating spray to make your chassis rust-free throughout!

This special aerosol spray is both a rust prevention and rust destroyer formula rolled into one. The conical nozzle reaches directly into the frame and sprays in a wide pattern radial pattern to fully cover the surface while reaching deep into the sub-frame. Phenolic resin encapsulates the rust hiding inside the chassis so it doesn't rust its way through and destroy the frame from the inside out. Once this is completed, zinc phosphate seals the frame against additional rust. The entire process is complete within 24 hours so you can confidently continue with the restoration. Watch our Internal Frame Coating video to see exactly how to use our hidden rust cure.

Old frames on vintage or muscle cars are hard to come by, and once you find one, you need to everything you can to save it. Our frame anti-rust coating spray an affordable way to preserve a chassis so you don't need to search out or fabricate a new one. This spray is available in a black or green finish to stop rust during auto frame restoration before it can reveal itself to the world. Note that three cans will be need for a full frame or truck frame. Learn more about how to use Internal Frame Coating by reading below or contacting the Eastwood experts. We’re here to help you Do the Job Right on every automotive project.


  • Tough phenolic resin penetrates and encapsulates the rust on the internal surface
  • Zinc phosphate seals it to prevent future corrosion
  • 24" long tube with conical nozzle reaches in to spray coating in a radial pattern for complete coverage
  • Aerosol covers 10 sq. ft
  • Fully cures in 24 hours
  • Perfect for frames, rocker panels, A and B pillars or any hollow and hard to reach areas.

Eastwood Internal Frame Coating

How Frame Coating Works

Eastwood Internal Frame Coating destroys rust hiding inside the chassis so it doesn't rust its way through. You spend time and money restoring a chassis — but what about all that rust inside the frame? Apply our rust coating spray to make your chassis rust-free throughout! Tough phenolic resins penetrate, convert and encapsulate the rust on the internal surface. Zinc phosphate then seals it to prevent future corrosion.

Eastwood Internal Frame Coating

Each can of Internal Frame Coating comes with a special 24-inch tube that reaches inside the tubular steel bars and frame parts. This tube has a conical nozzle with multiple sprays, which reach outward to completely cover the innards of the metal. Tough phenolic resins in this coating then penetrate and encapsulate the rust on the internal surface, preventing it from spreading. Zinc phosphate seals it to prevent future corrosion. This special coating cures within 24 hours, leaving you a frame that's strong inside and out even in the subframe and cavities.

Eastwood Internal Frame Coating

Expert Tech Service

Wondering how to spray paint inside a tube? Not sure how much you'll need for a project? The Eastwood team is here to help. We offer free product demonstration videos, how-to-articles, over-the-phone advice and more so you can do the job right. Give us a call, send an email or visit the Eastwood Garage online 24/7. Internal Frame Coating is one of several great products we offer for restoring your chassis so you can enjoy the fruits of your labor on the open road.


In the Box


Internal Frame Coating w/Spray Nozzle, 14-oz. aerosol, green or black

Guides & Accessories


Click here for instructions

Click Here for Material Safety Data Sheet

Safety Information

Always wear eye, skin and respiratory protection when applying this product.Use in a well ventilated area away from open flame. Store in a cool dry place.

Click here to see safety products

Application Tips

Vehicle approximate application coverage requirements. (1) 14 ounce Aerosol covers 10 sq. ft.

  • (2) Cans for sub-frame
  • (3) Cans for full frame
  • (3) Cans for truck frame


Rated 1 out of 5 by from Disappointed with this product Spray can would stop spraying intermittently as I would pull the wand out of the rocker panel and I could not see what areas that I missed. I had to re-do the rocker panel and push down hard on the nozzle continuously during the spray and it would still spray on-off. When there was approximately 25% left in the can, I couldn't get anymore product to come out of the can, I tried a new nozzle and that didn't work either. I feel that I didn't get a good value for the cost of this product.
Date published: 2022-02-08
Rated 1 out of 5 by from 2 bad cans 2 of the 3 cans would not spray. The one that did was not enough to do any real good.
Date published: 2022-01-30
Rated 1 out of 5 by from Rust bleeds through... I purchased several cans of both the green and black, I like the black better because if it drips out any holes it blends in with the black frame paint. I wanted to see how well it actually holds up so I sprayed some lightly rusted area on the outside of my frame. Well after about a 2-3 week time period the rust was coming back through. I was a big an, but now I'm not so sure...
Date published: 2020-04-13
Rated 1 out of 5 by from My 2nd Bad Experience This is my 2nd Bad Experience. The first time I painted inside the cowl. Before I did so, I thoroughly cleaned, sanded and prepped everywhere my hand could reach. When the paint dried, it left air bubbles in the paint. I used acetone to remove as much of them as possible, then sanded them down and top coated with the Eastwood rust encapsulator. I figured this was possibly operator error so I tried the Internal Frame Coat again. This time I used it to paint inside my windshield frame. Being I had got down to bare metal on the outside, I first coated the outside with POR 15. Then I sanded it and painted over that with the Eastwood 2K Aero Spray Paint. This process was approved by Eastwood and looked great. It has been 2 years since I competed this so the paint has cured. Today I decided to coat all the rust inside this windshield frame where it is impossible to prep and paint normally. I masked all the holes in the frame to keep the paint off my painted surfaces. Then I snaked the tube inside and started painting. This product literally destroyed the glue on the masking tape. I'm addition to that it wrinkled and destroyed all my finished paint. It destroyed paint that I had on the outside of the frame, POR 15 I had used on my floor pans that it dripped onto and also destroyed professionally painted surfaces on the outside of the car where it dripped. It additionally ate through my plastic bags I had used to protect my floor. I wish I had never come across the product. Time will tell whether it actually protects the inside of my windshield frame and may work for you if you have nothing but bare metal that comes into contact with it. However, DO NOT USE THIS PRODUCT NEAR ANY PAINTED SURFACE. It pours out like water and will destroy all painted surfaces faster than paint remover. BTW: This past week, I told Eastwood I was going to do this before I started. No one at Eastwood warned me this would destroy my good painted surfaces. To say the least I DO NOT RECOMMEND this product!
Date published: 2020-01-08
  • y_2022, m_10, d_5, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.34
  • cp_3, bvpage2n
  • co_hasreviews, tv_1, tr_37
  • loc_en_US, sid_12515Z-15275Z, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_eastwood
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 10.79ms

Questions & Answers

I am doing a full 'bare metal' restoration. When in the process of Repair, Blast, Prime, Filler, Paint would it be best to coat the internal parts of my body panels? I am concerned about how this might impact my exterior finish by leaking out.

Asked by: DavidC
It would be best to treat the internal parts of your vehicle after the first primer stage. Blast, prime, repair, filler, internal parts coat, re-prime, paint.
Answered by: vince
Date published: 2021-03-05

What is the coverage area?

Asked by: James
This covers 10 square ft.
Answered by: ZachC
Date published: 2021-02-03

can this be used in a tractor gas tank? I am installing a new gas tank on a tractor and I have used this on a Frame,I was wondering if it would hold up inside of this brand new gas tank.

Asked by: FED55MA1942
The Eastwood Internal Frame Coating(12515Z) is not rated for inside the gas tank sealing. To seal the inside of a fuel tank you would use Eastwood's Gas Tank Sealer kit (10165Z)
Answered by: vince
Date published: 2021-01-27

How many cans would I need for Wrangler TJ?

Asked by: JimL
I know this question was asked a year + ago but.... I used 2 cans total. One per side. 1 more would’ve been better but with all the rust removal prep I did, I felt 2 cans did the job. ***use a 4” stove pipe cleaning brush numerous times with four, 3 ft extensions, use a magnet to pull out what you can AFTER using shop vac with long makeshift hose, use your fingers to pull out large rust chunks (couple hours per side!), try some 120 psi compressed air and repeat process til satisfied. Took every bit of one day to do it right, and this is a clean TN Jeep tj!
Answered by: Scotty in TN
Date published: 2022-01-03

How long should a vehicle sit garaged to dry out the frame before application?

Asked by: Sjbiss
48 hours at 50% relative humidity at 70 degrees would provide a dry surface for the application of Eastwood Internal Frame Coating(12515z). Colder temps and higher humidity will all affect and possibly increase drying times.
Answered by: vince
Date published: 2021-01-10

Does this need to dry the full 24 hours before topcoating? I am only topcoating the spots that bleedout of the frame.

Asked by: Jackson
Yes it is recommended to allow this product to cure 24hours before top coating as it is a phenolic resin product and will need to off gas fully before being top coated.
Answered by: vince
Date published: 2021-02-01

I am thinking about using your Internal Frame Coating on the heater channels on my vw bug. I think it would be great, but I am concerned about how the product my perform with heat. Is using this product in a hot application going to be an issue?

Asked by: brian_d123
There should be no problem with spraying your heater channels as the Eastwood internal Frame coating will sustain temperature up to 400 Degrees F. Should the temps in these channels exceed 400 dgrees F we would recommend Eastwood 2K Aerospray High Temp Ceramic(14925Z) which has a 650 degree F maximum temp and it is a direct to metal paint.
Answered by: vince
Date published: 2021-01-10

Is a regular aerosol spray tip available for these paint cans, like those used on aerosol spray paint?

Asked by: Phil55
The Eastwood Internal Frame Coating (12515z & 15275Z) both come with a standard spray tip installed on the can. The 24" long spray tube that is included with this item is an accessory that you change to when the need to spray into hard to reach places is called for.
Answered by: vince
Date published: 2021-02-02

Will this adhere to freshly sandblasted and not sanded sheet metal?

Asked by: Tyler
Yes the Eastwood Internal Frame Coating (12515Z - 12275Z) will adhere to sandblasted sheet metal. The sandblasted surface must be cleaned with Eastwood Pre Painting Prep Spray (10041Z) before application of the frame coating.
Answered by: vince
Date published: 2020-12-07

What prep is needed before applying this product? Should I use air and vacuum to blow out dust/dirt? What about a pressure washer? I’m worried that I will trap water inside the frame if I use the pressure washer. 

Asked by: Cfraser
No prep work is technically required prior to applying this coating. However, if anything you can attach a blow gun to the end of your air compressor lines and blow air though the frame to try to knock lose any major rust sections and debris.
Answered by: Kelly H
Date published: 2021-01-10

Can I put Sound deadening products such as Dynomat over the internal frame coating?

Asked by: Daniel
Once the internal frame coating is dried you can certainly apply sound deadening products over top.
Answered by: Scott C
Date published: 2021-01-10

Can i use it for outdoor gym like power rack. I live in coast so the air is very humid and it reach 114f degree ☀️. And if its will protect the equipments what is the recommend time to re-use the product.

Asked by: jack
This product is designed for crevices and hard to reach areas, for a gym rack we would recommend our chassis black.
Answered by: SeanW
Date published: 2020-09-11

Can the IFC be top coated?

Asked by: KKMD
Yes the Internal Frame Coating can be topped with a great deal of our paints and coatings including the most common- Chassis Black paints we offer.
Answered by: Kelly H
Date published: 2020-08-22

I would like to know if the internal frame paint can paint over paint. I have some paint inside of fenders and I was going to use the product there ,too. Thanks Guy B.

Asked by: Guy631
Unfortunately we can not guarantee compatibility with paints and coatings that we do not sell. We would have to advise you to test a small area first.
Answered by: Kelly H
Date published: 2020-07-26

How do you clean out the extension hose? The instructions say to spray solvent through the hose but I'm not sure how you would do that. Do you sell solvent in an aerosol can that would hook up to the extension?

Asked by: Keith
Our Aerosol Injected cleaner is perfect for cleaning out this extension hose/ tube
Answered by: Kelly H
Date published: 2020-09-25

What one is more durable for the inside of an old boxed frame on a new england pickup? I want it to last as long as i can and want to do it right.

Asked by: 97gmc
These two have identical durability. The only difference is the color.
Answered by: Scott C
Date published: 2020-09-10

What is the recoat times? It says several coats but does not give re coat time

Asked by: Bob W
I was just at the Eastwood store and asked the same question. They told me an hour.
Answered by: Joe M
Date published: 2020-12-28

Can this be applied to a late model gm truck frame with a factory wax coating?

Asked by: Saucy
The wax coating would need to be completely removed before applying any product such as this that is a coating that cures or dries liek a normal paint.
Answered by: Kelly H
Date published: 2020-08-31

If I use Internal Frame Coating be used to protect surfaces of my trailer. Will it need top coated?/ recommendations/

Asked by: Retired and Poor
No need to topcoat our internal frame coating once applied.
Answered by: Scott C
Date published: 2020-10-24

How abrasion resistant is the coating? Could metal rubbing against it rub it off?

Asked by: Christine_208
Internal Frame Coating provides a durable finish, but metal rubbing against it will wear through the finish.
Answered by: NickC
Date published: 2020-05-27

Is it acceptable to use this product on clean bare metal that might be located next to a rusty area??

Asked by: Green27
Our Internal Frame Coating can certainly be applied over bare metal areas.
Answered by: Scott C
Date published: 2020-09-13

What would you recommend on inner cab corners that has slight rust bubble?

Asked by: Drew5
Unfortunately, when you see a slight rust bubble on a cab corner, it is usually rusting from the inside out and the rust is worse than you can see. Generally, cutting out the rusted metal and welding in new is the repair that is needed. You could apply Internal Frame Coating to the back side of the panel which should slow the rust, but when you have a bubble, it will generally need a repair.
Answered by: NickC
Date published: 2020-05-03

I need to repair some welded nuts that are for the fuel tank in my van and need to know if I can apply this before (while the hole is larger) and then weld in the new section to fix the tank mount.

Asked by: Matt
We suggest doing the welding first if at all possible as the heat of welding will burn a little of the coating off around it if you do it after. As long as the small wander and nozzle will fit in the welded nut hole.
Answered by: MattM
Date published: 2020-04-29

So I'm trying to prevent rust throughout my 56chevy and the old fashioned "air-conditioning" vent system has light rust. If I apply this will it give off fumes after it dries. I don't want to be driving with the air circulating and breath in toxic fumes.

Asked by: Brettj
This product will not give off fumes once it is fully cured.
Answered by: Kelly H
Date published: 2022-01-22

Can I use rust converter before I use this product?

Asked by: E9000
We do not recommend using the converter prior to the internal frame unless you can thoroughly clean prior to application.
Answered by: ZachC
Date published: 2020-04-05

what's the difference in internal frame and rust encapsulator? whats a good rule on when and where to use rust converter rust encasulator and internal frame. have insides of doors fenders and cab sections that are impossible to blast and need coated as we

Asked by: Mischa
Internal Frame coating does the same thing as our Rust Encapsulators but is designed specifically to be used in the areas you can not access to do any prep work to them whereas the Encapsulators require prep work for it to adhere properly.
Answered by: Kelly H
Date published: 2020-09-20

can internal frame coating be primed over for paint..

Asked by: john
Yes, the INternal Frame coating can be primed and painted over the top of. Just do not use any self-etching primers.
Answered by: Kelly H
Date published: 2020-06-21

I sprayed the inside of my frame with fluid film about 6 months ago. Can I put this over it?

Asked by: Anonymous
Internal frame coating is formulated to be applied directly over the bare rusty metal. We would not recommend applying this product over the fluid film.
Answered by: Bob G
Date published: 2020-01-15

Would this need to be done after powder coating the outside of the frame or can it withstand the heat and be done before?

Asked by: Goat
Only after powder coating. The heat from the oven, from powder coating, will destroy it
Answered by: Mshawn
Date published: 2021-04-27

Would you recommend this product for coating back side of body panels and bottom of cab and box of a new truck

Asked by: Mark02
This would be a good product for your application. On some new trucks, they have a waxy substance on the frame and panels from the factory. It the parts are coated with this substance our internal frame coating will not be a good product for your truck.
Answered by: Bob G
Date published: 2020-12-07
  • y_2022, m_10, d_4, h_21CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.34
  • cp_3, bvpage2n
  • co_hasquestionsanswers, tq_135
  • loc_en_US, sid_12515Z-15275Z, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_eastwood
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 78.55ms
Eastwood Internal Frame Coating 14 oz Aerosol

Starting at$28.99

In Stock