Moulding

What Is Automotive Moulding?

Automotive moulding — also spelled molding — refers to the decorative and protective trim strips and profiles fitted to a vehicle's body. Moulding is a decorative component of the exterior body of a car, truck, or SUV — essentially a profiled strip of plastic, chrome, or hard rubber located at different body parts, including windows, sides, fenders, and the windshield. Far from purely cosmetic, these pieces play a meaningful role in keeping sheet metal and painted surfaces safe from everyday wear.

Why Automotive Moulding Matters

You don't realize how important automotive moulding is until your car is missing it — moulding and trim are crucial for defining the looks of your vehicle and an essential part of any restoration project. Beyond aesthetics, moulding acts as a first line of defense against parking lot dings, door edge chips, and road debris. Adding body side moulding provides protection against parking lot damage, while still needing to look good once installed.

Types of Automotive Moulding

Car mouldings are available in a variety of types, sizes, and shapes, including side body moulding, lower body moulding, door mouldings, window mouldings, footrest moulding, mudflaps, bumper guards, wheel well trim, door edge guards, and fender flares. Each serves a distinct purpose:

• Body Side Moulding — Runs along the door panels to absorb lateral impact and prevent paint damage in tight parking spaces.
• Door Edge Guards — Narrow strips that protect the leading edge of each door from chipping paint when the door swings open.
• Window & Windshield Moulding — Seals and frames glass openings, keeping out moisture and wind noise.
• Bumper Moulding — Wraps around front and rear bumpers to cushion minor impacts and maintain a factory-finished appearance.
• Wheel Well Trim — Frames the wheel arches, shielding inner body panels from gravel and road spray.

Materials and Finishes

Car mouldings can be made from various materials, with polyvinyl chloride (PVC) being a common choice due to its high scratch resistance, weather resistance, and gloss matching that of the car body. They are also available in different colours and patterns, such as black body side moulding with a grain pattern that replicates the style of older classic or European cars, while chrome body moulding is another popular option providing a classic look suited for modern cars and trucks. When selecting a replacement or upgrade, consider whether you need a paint-matched piece for a seamless OEM look, or a chrome or black accent to complement your vehicle's styling.

Installation Tips

Most body mouldings attach via automotive-grade adhesive tape or mechanical fasteners. Allow the adhesive to cure fully before exposing the vehicle to the elements, and consider using protective sealants to shield the trim from harsh weather conditions and UV rays. Always clean and dry the mounting surface thoroughly before application to ensure a lasting bond.

Shop Moulding by Brand

For quality and fitment you can count on, Keystone is the go-to source for automotive body moulding in this category. Keystone Automotive Industries, a subsidiary of LKQ Corporation, is the United States' largest aftermarket auto parts supplier and an ISO 9001 compliant distributor offering a high-quality, cost-effective alternative to new OEM replacement parts. Their broad catalog of collision and appearance parts — including moulding — makes them a trusted name for both professional repair shops and DIY enthusiasts alike.