BMW 635CSI Turn Signal Bulb Parts

Showing 15 out of 15 part(s) found in our catalog.

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BMW 635CSI
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Electrical, Lighting and Body
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Turn Signal Light Bulb
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Used as parking/turning signal and/or brake/running light depending upon model. Nickel base version of brass base 1157 bulb. Please verify appearance and wattage of existing bulb prior to ordering.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.19
Reg
$2.28
List
$0.35
Multiple uses, may include turn signal, brake light, backup light, rear foglight, and third brake light depending upon model. Please verify appearance and wattage of existing bulb. If original bulbs are...
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.19
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$2.28
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$4.94
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.19
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$2.28
List
$0.39
1989 BMW 635CSi
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$1.49
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$1.55
List
$0.60
OEM
1985, 1986, 1987, 1988 BMW 635CSi
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$1.99
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$2.07
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$0.51
Higher wattage version of nickel base 7528 bulb.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.19
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$2.28
List
$0.35
1985, 1986, 1987 BMW 635CSi
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$2.49
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$2.59
List
$1.46
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$3.29
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$3.43
List
$1.65
Please verify appearance and wattage on existing bulb prior to ordering, for clear version bulb please see 2821 bulb.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$1.19
Reg
$1.24
List
$0.68
Please verify appearance and wattage on existing bulb prior to ordering, for amber version of this bulb please see 194NA bulb.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$1.69
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$1.76
List
$0.32
Primarily used in tail lamp and side markers, please verify appearance and wattage of existing bulb prior to ordering.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.19
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$2.28
List
$0.31
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.69
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$2.80
List
$0.74
Please verify appearance and wattage of existing bulb.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$1.69
Reg
$1.76
List
$0.32
This brand is: (12V - 21W).
1987, 1988, 1989 BMW 635CSi
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$1.79
Reg
$1.86
List
$0.65
1987, 1988, 1989 BMW 635CSi
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$3.19
Reg
$3.32
List
$1.52

The average price of a BMW 635CSI turn signal bulb is between $1.19 and $3.29.

What Bulb Type Does The BMW 635CSI Turn Signal Bulb Use?

Finding the right bulb for your BMW 635CSI turn signal is simple. Most years use a single-filament amber bulb, commonly an 1156 or 175. That said, there can be slight changes from year to year, so double-check your owner’s manual or peek at the housing itself for the exact number. Picking the proper bulb means everything works as it should—and saves you from dealing with annoying flickers or awkward fit issues.

How Do You Replace The BMW 635CSI Turn Signal Bulb?

Replacing the BMW 635CSI turn signal bulb is pretty straightforward. Start by locating the turn signal assembly—usually found at the front, or occasionally from behind the wheel well. You’ll typically need either a Phillips screwdriver or a socket wrench to take off the lens. Twist the bulb socket counterclockwise and pull it free, then install the new bulb. Try not to touch the glass part of the new bulb with your fingers, as it can shorten its life. Put it all back together, then test the signal before you call it a day.

Why Do The BMW 635CSI Turn Signal Bulbs Burn Out Frequently?

If your BMW 635CSI turn signal bulb seems to burn out more often than expected, it’s usually down to things like voltage spikes, worn-out sockets, or just poor-quality bulbs. Sometimes, moisture sneaks into the assembly and creates corrosion, which leads to faster failures. Loose wiring can also play a part. When you replace a bulb, take a moment to check for rust or loose connections. Spend a little more on reputable bulbs if you want to avoid repeating the job too soon.

What Is Causing My BMW 635CSI Turn Signal Bulb To Blink Rapidly?

If your BMW 635CSI turn signal bulb is blinking much faster than normal, usually one of the bulbs is out or there’s a wiring problem somewhere. First, swap in a new bulb and see if that fixes it. If not, take a closer look at the socket and wiring. Rapid blinking, called hyperflashing, sometimes happens if you’ve put in an LED bulb without a load resistor or compatible flasher relay. Stick to the bulbs recommended for your BMW, and you’ll keep things working as they should.

Can I Use LED Bulbs In Place Of Standard BMW 635CSI Turn Signal Bulbs?

Swapping out your regular BMW 635CSI turn signal bulb for an LED is a popular upgrade and brings brighter, longer-lasting signals. Just be aware that if you don’t add a load resistor or use a relay made for LEDs, you’re likely to get hyperflashing. Make sure any LED bulb matches your car’s specification and housing size. And before you go all-in, check your local laws since some places have restrictions on aftermarket lighting. Done right, it’s a great way to make your lights more visible and reduce how often you have to swap bulbs.

How Easy Is It To Buy A BMW 635CSI Turn Signal Bulb?

Getting a BMW 635CSI turn signal bulb from AutohausAZ is a breeze. The prices won’t break the bank and ordering is quick and straightforward. Shipping is fast, and sending something back is just as simple if you need to. When you need a new turn signal bulb for your BMW, you can count on having it show up at your door without any headaches.