BMW 635CSI Tail Light Bulb Parts

Showing 18 out of 18 part(s) found in our catalog.

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BMW 635CSI
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Electrical, Lighting and Body
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Tail Light Bulb
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1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$1.69
Reg
$1.76
List
$0.39
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
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$2.28
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$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
Reg
$2.28
List
$4.94
Please verify wattage and length of existing bulb prior to ordering.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.69
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$2.80
List
$1.06
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
List
$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 wattage and length of existing bulb prior to ordering.
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$1.89
Reg
$1.97
List
$0.46
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
Reg
$2.28
List
$0.31
1985, 1986, 1987, 1988, 1989 BMW 635CSi
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$2.69
Reg
$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 tail light bulb is between $1.19 and $3.29.

What Type Of Bulb Does The BMW 635CSI Tail Light Use?

Most BMW 635CSI models use either the standard 1157 or 7528 tail light bulb, though the exact type can vary depending on the vehicle’s year and where it was sold. The best way to get the right replacement is to look up your owner’s manual or take a look at the bulb that’s already in your car. It’s important to match the correct base and wattage to keep everything working properly. Some drivers opt for LED bulbs, which often last longer and shine brighter. If you’re not sure which bulb to buy, it helps to bring the old one with you to a parts store so you can be certain you’re picking out the right match.

How Do You Replace The BMW 635CSI Tail Light Bulb?

To change out the BMW 635CSI tail light bulb, open the trunk and look for the trim panel or cover behind the tail light. Pop off the cover and you should see the bulb holder. Twist it out of the assembly, then pull out the old bulb and push in the new one. Make sure the new bulb sits snugly in place before putting everything back together. Once you reattach the bulb holder and cover, turn on your lights to check your work. For best results, put on gloves to avoid oil from your skin getting on the bulb, which can shorten its life.

Why Are My BMW 635CSI Tail Lights Not Working Even After Replacing The Bulb?

If your tail lights still aren't working after you've swapped in a new bulb, there could be an issue with the socket, the contacts, or even the fuse. Sometimes, moisture or corrosion can build up where the bulb connects, which stops electricity from flowing properly. Try cleaning the socket with some electrical contact cleaner and take a look at the wiring. Also, check your car’s fuse box for blown fuses. On rare occasions, the light switch or the tail light assembly itself might be the culprit instead of the bulb.

Can I Upgrade My BMW 635CSI Tail Light Bulb To LED?

Many people like the idea of upgrading to LEDs, and for most BMW 635CSI models, it’s possible to swap out the original bulb for an LED version with the same base. In some cases, you might notice fast blinking (hyper-flashing) or "bulb out" warnings after making the switch—this happens because LEDs use less power. You can usually fix this with a resistor kit or an LED-compatible relay. Upgrading to LED can give you brighter light and bulbs that last longer, making it a popular choice.

How Can I Prevent My BMW 635CSI Tail Light Bulb From Burning Out Quickly?

If you find yourself replacing tail light bulbs more often than you’d like, it’s usually due to moisture in the housing, poor-quality bulbs, or a shaky connection in the socket. Always use the kind of bulb recommended for your car’s make and model. When you install it, try wearing gloves and make sure the bulb is seated squarely in place. Inspect the tail light housing for cracks or broken seals where water can get in, and keep connections clean to help your bulbs last longer.

How Can You Easily Find Affordable BMW 635CSI Tail Light Bulbs?

At AutohausAZ, finding the right BMW 635CSI tail light bulb is simple and easy on your wallet. We offer everyday low prices and quick shipping, so you can get back on the road without the hassle. And if something’s not quite right, our return process is straightforward. Count on us to keep your BMW shining bright for less.