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AutoAmenity Chrome Wheelskins Hubcaps Home >Molding>1-2" Molding>1/8-1" Molding>2"+Wider Molding>Bumper Kits

Auto Bumper Molding Kit

For Cars, Trucks, SUVs, and Vans

Auto Bumper Molding Provides Ding and Dent Protection and a finished trim look.

Easy Peel-and-Stick installation.

Moldings on this page may be Ordered Directly from the Cowles Factory,

Some items may not be stocked and are manufactured to order,

which may mean 7 to 10 Days before they ship.

Universal Black Bumper Trim Molding
Auto Bumper protective molding installed
Bumper Protection Molding kit
Why Risk Scrapes Dings and Dents?
Bumper dinged because no Auto Bumper protective moulding installed

This Deluxe Rubber Bumper Molding kit comes with Four Pieces, 7/8" wide, 21 inch long, 5/16" thick, of Bumper molding with formed bullet-shaped round ends, and 3M automotive tape attached, ready to peel and stick.  Impact-absorbing smooth rubber with finished ends. Not available in stores, we offer our trim moldings direct to you!

Bumper Protection Molding kit

7/8" Black Bumper Protection Molding Kit
Cowles 4 piece kit -
4 pieces 21 inches long
Both ends are formed bullet shaped

Model M34-121  4-piece kit $54.5

This item has been Discontinued
 7/8" wide by 5/16" thick black core, gloss finish molding
This molding is only available in black
Molding Prices include Free Shipping*
Black 7/8 inch Door Protection auto body side Molding Trim  Strips 7/8" Black Body Side Trim Molding Kit
Cowles 14 feet kit - 2 pieces 7 feet long
Both ends are formed bullet shaped
M33-524  7/8" Black 2-piece Kit $59.50

This item has been Discontinued
Black PVC Body Side Molding,
Not available in longer lengths
 7/8" wide by 5/16" thick black core, gloss finish molding

Prevent most minor dings, paint-chips and body blemishes that can happen when someone opens their door and whacks your vehicle. Many vehicles come with decorative side moldings strategically placed at "door-ding height" to help prevent this problem. If your vehicle lacks such protection, you may want to consider installing it yourself. Installing side protective body molding is a fairly simple undertaking, provided that you take the time to apply it carefully and meticulously.

Measure: Be sure to measure the area you want to protect. Note the length of the pre-cut kits, some trucks may need two kits if you want to extend the molding to the box as well as the cab.  If you are installing moldings into slots in bumpers or body side panels, be sure to allow adequate clearance so you do not need to force the molding into place. Order enough so you have a foot or two extra to practice your cuts.


Easy to install.

All of our molding comes with 3M acrylic automotive foam tape attached and ready to peel and stick on. Once applied, 3M peel-and-stick pressure-sensitive self-adhesive backing not is affected by weather or road chemicals. Not available in stores, we offer our trim moldings direct to you! Why pay for expensive dealer installation?


Materials: Body Side Molding kit, Sharp Cutting tool, Bottle of Isopropyl Alcohol from your bathroom, Clean white rag, Masking tape, Grease pencil (whose marks will easily rub off). A warm garage or a sunny day makes the whole job a lot easier. Do not use a heat gun, and do not heat by close proximity to a radiant heater. High heat may damage the UV protection layer over the aluminized film (Mylar).


Seal the ends: The molding manufacturers are now recommending sealing the cut ends of chrome moldings with clear nail polish to seal water out of the mylar and plastic clear layers.  This will help to prevent delamination over time.  It is not necessary with black moldings because they are a single solid extrusion impervious to water.

Moldings with 3M tape are best installed at temperatures warmer than 65 degrees. Plastic moldings are more flexible, easier to manipulate and cut when warmer than 70 degrees. Smaller moldings can be easily cut with heavy sharp kitchen shears or tin snips. For larger moldings, more than 3/16 inch thick, a clean straight cut is more difficult. We recommend a clean sharp anvil-style pruner (with a sharp blade coming down on a flat surface) is the best tool to get a straight cut on all sizes of molding. A carpenter's utility knife with razor blade inserts may also work if you are careful , but not one with the break-off blades.


The picture below left shows the professional tool used by our installers to cut molding, with 3.75 inch long replaceable razor blade. The Center picture shows a Husky Multi-cut tool available in hardware stores for about $20. The picture at right shows an Craftsman anvil-style cutters with replaceable blades  available at Sears.

Professional Auto Molding Cutting Tool with replaceable bladeProfessional Auto Molding Cutting Tool with replaceable bladeCraftsman Cutters Anvil-style  Molding Cutting Tool


Prepare the vehicle bonding surface by cleaning it thoroughly with regular isopropyl rubbing alcohol and a clean lint-free white cotton rag or clean disposable toweling. Do not use shop rags which may have dirt or oily residues. For more professional results, use 3M brand Prep Solvent 70 or similar products available at many auto stores.


THOROUGH CLEANING removes oily or waxy residues so the 3M Peel-and-stick adhesive can bond securely. Avoid using colored cloth rags for this purpose, as dyes in the fabric may leave colored residue behind.

We do not recommend using packaged medical alcohol towelettes because they may contain antimicrobial agents such as Benzalkonium Chloride, skin lotion, conditioners, or other additives which could leave residues that may prevent proper adhesion of the 3M tape. If you use packaged towelettes for one cleaning step, you should follow that by another cleaning with clean disposable toweling and alcohol or 3M cleaner. Do not re-use towels from one cleaning step to the next, since they may re-distribute residues you are trying to get rid of.
Some common automotive products, such as silicone-based waxes or surface conditioners such as Armor-All or Tire Shine. may be  more difficult to remove completely. If such products have been applied to the surface any time in the past, it may require 4 or more repeats of cleaning with new clean cloth and alcohol or 3M solvent to completely remove. If you have any doubt of cleanliness of the surface, test with a small piece of masking tape to different area’s that have been cleaned. (Use a new piece of masking tape for each area tested.)

If the masking tape peels off without much resistance, repeat cleaning steps until the masking tape sticks aggressively.
We have found that 3M tape adheres better to painted surfaces than plastic ones. This is due to the inherent smoothness of the paint, where the plastic usually has a fine textured surface that tends to hold onto wax residues and may need more thorough cleaning.


If you do not have a ridge or line to follow on the car, Apply a strip of masking tape to be a guide to help position the Body Side Moulding to be perfectly straight. You may want to measure up from the ground at each end to get a parallel line. Stick the masking tape at one end, and hold it a few inches away from the car while pulling tape off the roll to the other end, eyeball your line, then stick it down lightly. Step back and look to see the lines are right, change if necessary. It is easy to change the tape at this point. Once the body molding is installed and the glue sets for a few days, it does not come off!

Once the straight line of masking tape is in place to provide a guide, use pieces of masking tape to temporarily "dry-fit" the entire length of body molding in place on the vehicle.

Determine where you'll need to cut the body molding for the doors and seams for a precise and accurate installation. Use pieces of tape or a grease pencil to mark the exact locations on the molding where you'll need to make the cuts. At the door-openings, and where the molding terminates at the edge of wheel-wells, you may need to cut angles to match the vehicle lines. Allow 1/8" minimum gap for door clearance. At the hinge side of the door you may need to bevel the end of the molding so that there is enough clearance when the door is opened.

Once you've marked the locations, carefully cut the molding. The molding is made from a relatively soft plastic. Cutting isn't difficult, but it is easier when the molding is warmer than when it is colder. Always cut chrome moldings with the blade entering the chrome side, cutting down through to the tape side.

Work with one section at a time, peel about a foot of the backing from the adhesive strips and press the molding into place. Then pull on the loose end of the backing and move along the molding, pressing it into place. Do not peel so much of the backing away that thesticky glue surface can contact other dirty surfaces which could then impair its adhesion.

After it is applied to the vehicle surface, rub each section of molding firmly with a soft clean cloth to help ensure that it is seated securely. You may want to come back a few hours later, or the next day, to give it another pressure rub to ensure the best adhesion.

Open and close the doors slowly, watching to ensure that the side molding is not touched or rubbed as the door moves.

Allow the molding adhesive to set up for at least 24 hours before washing your vehicle. Maximum adhesion is reached after 3-5 days in temperatures above 70 degrees, longer if it is cooler.


Chrome Moldings are made with a reflective aluminized polyester film (Mylar) sandwiched between a UV protective coating and a vinyl backing that  attaches the film to the translucent gray base vinyl extrusion. In most cases, the Mylar film is then wrapped around the molding to the back side so the edge is protected by the 3M tape and not exposed to the elements. Care should be taken to avoid abrading the protective film, which can then allow salt and road chemicals to degrade the reflective properties of the Mylar film.


Seal the ends: The molding manufacturers are now recommending sealing the cut ends of chrome moldings with clear nail polish to seal water out of the mylar and plastic clear layers.  This will help to prevent delamination over time.  It is not necessary with black moldings because they are a single solid extrusion impervious to water.

3M Automotive Attachment Tape is a .045-inch thick, medium-density white acrylic foam tape with high performance acrylic adhesives on both sides and a red release liner. 3M Automotive Attachment Tape uses automotive OEM (Original Equipment Manufacturer) approved acrylic foam core and adhesive technology. It is characterized by high peel and shear adhesion, high internal strength, high conformability and excellent plasticizer resistance. Typical applications would include body side moldings, rocker panel trim, claddings, bumper trim and other automotive trim components. Because it requires no drilling into automotive painted surfaces, 3M Automotive Attachment Tape eliminates the concern for rust development associated with the use of mechanical fasteners. The unique stress relaxation properties of the tape's foam core allow it to expand and contract with temperature changes. Stress forces of an application are dissipated throughout the foam core, providing excellent long-term performance. The viscoelastic properties incorporated into these tapes allow it to conform to surface irregularities and gaps, providing a better fit by compensating for some part-to-vehicle mismatch. The use of 3M acrylic foam tapes eliminates the unsightly appearance of bolt, screw or rivet heads associated with mechanical fasteners. Surfaces remain clean and smooth, contributing to styling and aerodynamic design. The use of acrylic foam tape can eliminate steps in the installation process, often requiring fewer parts and less labor time.

Phil, I received the (1/4" Chrome) Molding today. It was exactly what I needed. I appreciate your help with the order. I will add you to my favorite sites. I may want to add molding on the car after it is painted. I will stay in touch. Thanks again for your help!!!!!!!! Mel L, Lagrange Ga

I received the (1/8" Chrome Trim) molding yesterday in good condition and some is on the car already. I am waiting for a dashboard piece to be painted to do the rest. It went on easily and I got exactly the results that I wanted. You have a happy customer. Grant B, Harisburg PA

Email your pictures and we will post yours on the website too!!

Use Anvil-Style Cutters with a sharp Blade
going down onto a Flat Anvil surface,
to make the best clean, straight cuts, 
 as shown in the picture below

 Auto Trim Molding Anvil Cutter

Do Not Use By-Pass cutting tools

such as Scissors or Tin Snips,

where two blades pass by each other,
they Will NOT give you a clean straight cut.

Do Not Use By-Pass Cutter