BMW E90 3-Series Brake Reservoir Cap Parts
Showing 1 out of 1 part(s) found in our catalog.
Brand
Keyword
Category
Select category below to view parts.
Mon-Fri 8-4 MST/PST (Arizona Time)
The average price of a BMW E90 3-Series brake reservoir cap is between $35.99 and $35.99.
What Size And Type Of Cap Fits The Bmw E90 3-Series Brake Reservoir?
If you’re hunting for a new BMW E90 3-Series brake reservoir cap, the best fit will be an OE-standard cap made for models from 2006 to 2013. Most E90s use a cap with a 34mm diameter and a standard thread pattern specific to BMW brake reservoirs. BMW part number 34336779715 is the common match for these cars. While it may look similar to caps on other BMW models, the E90's cap is made for the shape and pressure range of this reservoir, so using a mismatched cap might cause sealing issues. Stick with an original or an exact OE replacement for the best fit. If your old cap has a soft rubber gasket, make sure the new one does too, since that’s what keeps out moisture and air. When in doubt, check your existing cap's part number or bring it with you to the store.
How Do I Know If My Bmw E90 3-Series Brake Reservoir Cap Needs Replacing?
Cracks, stripped threads, and a loose fit are clear signs your BMW E90 3-Series brake reservoir cap should be swapped out. If you spot fluid on the reservoir or smell brake fluid when you lift the hood, chances are the cap isn’t sealing tight. A broken or missing gasket under the cap almost always means time for a new one. Even if your cap looks fine, if you start getting brake warning lights and can’t find another cause, don't rule out the cap. With BMWs, small leaks and loose seals sometimes trip pressure sensors.
Can A Faulty Cap Cause Brake Problems Or Warning Lights On My Bmw E90 3-Series?
Yes, a worn-out BMW E90 3-Series brake reservoir cap can cause trouble. A loose or cracked cap won’t keep out moisture or dirt, so over time the fluid goes bad and your pedal starts to feel mushy. Air leaks throw off system pressure, which on many BMWs can set off dash lights, even if the brakes seem to work for now. If ignored, this kind of problem leaves systems open to damage and raises the risk of bigger repairs later. Just fixing the cap can save you a lot of hassle.
Is It Hard To Replace The Bmw E90 3-Series Brake Reservoir Cap Myself?
Changing this cap is about as simple as it gets—no tools, no stress. Unscrew the old BMW E90 3-Series brake reservoir cap by hand, toss it, and twist the new one on until it's firm. Wipe up any fluid and double-check the brake level while you’re at it. There’s nothing tricky about the job, and it’s a good chance to spot early leaks or low fluid before they lead to bigger headaches.
Are Aftermarket Brake Reservoir Caps Safe To Use On My Bmw E90 3-Series?
Not every aftermarket BMW E90 3-Series brake reservoir cap will get the job done. Factory caps meet BMW's specs—they're built to hold pressure, cope with brake fluid, and shrug off engine heat. Some aftermarket caps work fine, but others go soft, crack, or leak before long. If you want reliability, use a cap that’s made for your E90, not just something “close enough.” Reputable brands usually get it right, but bargain-bin choices can cost more in the long run.
Why Choose AutohausAZ For Your BMW E90 3-Series Brake Reservoir Cap?
Shopping at AutohausAZ means you get the right cap, fast, and without hassle. We stock the exact BMW E90 3-Series brake reservoir cap you need—no guessing, no getting stuck with the wrong fit. Prices stay fair, and shipping never drags out for weeks. Have to return something? Our process is straightforward and friendly, no hoops to jump through. We care about helping you finish the job, not just making a sale. When you need brakes to work right, count on us to deliver what fits. Skip the dealership markup—get your E90 cap with us, and keep your BMW running the way it should.
