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Select your specific body style and options below to find replacement speakers, subs, stereos, dash kits, and more.
|Speaker location||Speaker sizes**|
|Front Door Tweeters||Tweeter|
|Front Door Woofers||4"|
Our installation details on your Audi S4 will help you do the job.
Whatever your level of experience, we can help with your installation — and save you even more money. Here's how:
When you select your vehicle on our site, you'll be able to shop from filtered lists of the products, such as receivers and speakers, that we know fit or work with your vehicle. You'll also be able to find more ”universal“ products, like amplifiers and subwoofers, that can be installed in just about any vehicle.
Pretty much every car on the road these days has a factory stereo. And pretty much every audiophile wants better sound than the factory stereo system can produce. At Crutchfield, we want to help you get the best sound possible in your ride and we’ve spent over four decades doing the research you need to get the stereo equipment that’s right for your ride.
We've disassembled the dashes and door panels of tens of thousands of vehicles, measured the spaces where the factory stereos and speakers fit, and loaded our findings into our massive fit database. Our system then compares these measurements to the dimensions of a given receiver or speaker to determine which aftermarket products will fit in the factory location.
No one else in the consumer electronics industry does the kind of stuff we do. That’s why no one else knows what we know.
You'll often see us note that a product "works with" your vehicle. This means that while it doesn't necessarily fit in a factory location, it's still designed to be compatible with your vehicle's electronics or interior design. Compatible products include adapters (for Bluetooth® or smartphone control, for example) that plug into your vehicle's stereo wiring harness and device holders that mount in a specific spot on the dash.
We also carry a wide range of products that actually are designed to work exclusively with specific vehicles. See below to learn more.
When you're choosing new car audio gear, the first step is to choose the gear that fits your car. The second step is to get it installed correctly. That's why we developed the Crutchfield KitFinder. With KitFinder, you'll be able to use our massive database to find and compare gear that will fit your specific vehicle. We'll also make sure you have the installation parts and instructions that make the job easier. Whether you're a first-time DIY-er or an experienced car audio pro, KitFinder takes the hassle and guesswork out of choosing and installing your new stereo and/or speakers.
When you shop with us, you'll see:
With most orders, you'll also get a set of Crutchfield's legendary vehicle-specific disassembly instructions. Created using info gathered by our Vehicle Research Team, these guides give you step-by-step guidance and detailed illustrations or photos. They're available for thousands of vehicles.
To see which speakers fit your vehicle, we've disassembled the door panels of tens of thousands of vehicles, measured the spaces where the factory speakers fit, and loaded our findings into Crutchfield's massive fit database. Our system then compares these measurements to the dimensions of a given speaker to see if it will fit in the factory cavity.
Here's how all that info helps you get and install your new speakers:
Many manufacturers have designed products that work directly with specific vehicles. These include:
Many car A/V products we describe as “universal,” in that there aren't dedicated factory locations for them. With many of these products, you'll have to check your vehicle for available space, and carefully plan your installation in advance. The most common include: