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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Electrical Brake Parts & Components

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Brake Light Switch

ES#4669443 - 5G0698459 - Brake Light Switch - Hall sensor found on the master cylinder which informs the computer to illuminate the brake lights - URO - Audi Volkswagen Porsche

Hall sensor found on the master cylinder which informs the computer to illuminate the brake lights 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4669443
Mfg#:
5G0698459
Back Ordered
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

OE Replacement Rear Brake Pad Wear Lead Sensor - Priced Each

Restore reliable electronic brake pad wear monitoring on your Audi B9/B9.5 or 4M chassis with EBC's OE-style replacement rear wear lead sensor. 2X Entries Into Our F80 M3 Sweepstakes
Fits B9 & B9.5 facelift models

Brand:
EBC - Corporate Logo
ES#:
5515930
Mfg#:
EFA1005
Ships in 1 Business Day
$4.99 USD
This product is lifetime replacement eligible Lifetime Replacement

OE Replacement Front Brake Pad Wear Lead Sensor - Priced Each

Restore reliable electronic brake pad wear monitoring on your Audi B9/B9.5 platform with EBC's OE-style replacement front wear lead sensor. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
EBC - Corporate Logo
ES#:
5515929
Mfg#:
EFA1004
Ships in 1 Business Day
$4.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Brake Pad Wear Sensor - Priced Each

ES#3648428 - 4M0615121AB - Brake Pad Wear Sensor - Priced Each - Always replace when replacing pads. - Original Equipment Supplier - Audi

Always replace when replacing pads.

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
3648428
Mfg#:
4M0615121AB
Ships in 1 day
$128.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Parking Brake Motor - Priced Each

Fits the left and right rear calipers

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3088050
Mfg#:
8W0998281
Ships in 3 Business Days
6% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1066.99

This product was last offered at the strikethrough price on
08-31-2026

$1005.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Brake Pad Wear Sensor

ES#4901349 - 8W0615121H - Front Brake Pad Wear Sensor - Alerts you when your brake pads begin to wear thin - Meyle - Audi

Alerts you when your brake pads begin to wear thin 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901349
Mfg#:
8W0615121H
Ships in 5 Business Days
$7.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Audi - Disc brake

ES#4901093 - 4M0615121AB - Audi - Disc brake - Meyle - Audi

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901093
Mfg#:
4M0615121AB
Ships on Oct 19, 2026
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi - Disc brake

ES#4901348 - 8W0615121E - Audi - Disc brake - Meyle - Audi

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901348
Mfg#:
8W0615121E
Ships on Oct 19, 2026
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Electrical Brake Parts & Components

From fluid level senders to pad wear sensors, ECS has replacement electrical parts for your brake system. Count on us for the right parts for your German car.

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Manufacturer names and/or part numbers are used only for identification purposes.

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