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2008–2015 Mercedes C300 / C350 / C250 W204 Stainless Steel Braided Brake Lines – Brake Line Upgrade Kit
2008–2015 Mercedes C300 / C350 / C250 W204 Stainless Steel Braided Brake Lines – Brake Line Upgrade Kit
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Upgrade your factory brake hoses with this set of stainless steel braided brake lines for Mercedes W204 C300, C350 and C250. This complete four-line kit uses a PTFE core inside a 304 stainless steel braid for a firmer pedal and more consistent braking under repeated hard use. As temperatures rise, factory rubber hoses expand and the pedal goes spongy. Braided lines hold their shape, so pedal feel stays the same from the first stop to the last.
What's in the Kit
- 4 braided brake lines — 2 front, 2 rear
- Stainless steel banjo bolts
- Copper crush washers
Specifications
| Inner hose | PTFE |
| Outer braid | 304 stainless steel with PVC cover |
| Fittings | Stainless steel |
| Working pressure | 4,206 PSI |
| Burst pressure | 12,618 PSI |
| Operating temperature | -94°F to +500°F |
| Inside diameter | 3.5 mm |
| Outside diameter | 7.5 mm |
| Minimum bend radius | 38 mm |
Vehicle Compatibility
| Model | Body Style | Chassis | Years |
|---|---|---|---|
| C300 | Sedan | W204 | 2008–2014 |
| C350 | Sedan | W204 | 2008–2014 |
| C250 | Sedan | W204 | 2012–2014 |
| C250 | Coupe | W204 | 2012–2015 |
Direct bolt-on replacement for the factory rubber hoses. Uses the original mounting points and routing — nothing cut, bent or modified.
Fits both rear-wheel-drive and 4MATIC models.
Frequently Asked Questions
Do braided brake lines actually make a difference?
Yes, and the difference is pedal feel rather than stopping power on paper. Rubber hoses expand slightly every time you press the pedal, and more as they heat up — which shows up as a pedal that sinks further the harder you use the brakes. A PTFE liner inside a stainless braid barely moves, so the pedal stays where you expect it. Most noticeable on repeated hard stops, downhill runs, or track sessions.
Do I need to bleed the brakes afterward?
Yes. Any time a brake line comes off, air enters the system and the brakes must be bled before the car is driven. Most people flush in fresh fluid at the same time, since the system is already open.
Can I install these myself?
It's a straightforward job for anyone comfortable working on brakes — roughly 1–2 hours with the car safely supported and a way to bleed the system afterward. If you aren't confident bleeding brakes, have a shop do it. This is the one system on the car where a mistake isn't recoverable.
Should I replace pads and fluid at the same time?
Worth considering, since the system is already open and has to be bled regardless. Lines, pads and fluid together means one job instead of three.
Warranty, Shipping & Returns
- Warranty: Lifetime warranty against manufacturing defects.
- Shipping: Free shipping within the United States. Delivered in 2–5 business days.
- Returns: 30-day returns. Must be unused, not installed, and in original packaging. 15% restocking fee.
