Hella 355119422 Disc Brake Rotor 295mm | Zinc Coated

The Hella 355119422 is a straightforward, do-it-right replacement disc brake rotor. It's a solid one-piece casting, 295 mm across, with a 10 mm nominal thickness and a 44.10 mm overall height. Nothing exotic here, and that's the point. When a rotor is worn past spec or warped enough to pulse the pedal, you want a clean, true replacement that bolts on and gets you stopping straight again. That's exactly what this one does.

The casting is high-carbon gray cast iron with a zinc coating over it. The high-carbon content matters more than it sounds. It helps the rotor shed heat evenly and cuts down on the squeal and judder that cheap castings are known for once they get hot. The zinc coating is there to keep the hat, the edges, and the vanes from turning into a rust bloom the first time the car sits out in the rain. You've seen the orange crust that forms on bare rotors within a week. This finish holds that off, so the wheel well still looks clean months down the road.

Fitment comes down to the numbers. This rotor uses a 6 x 112 mm wheel bolt pattern and a 67 mm hub bore. If those match your vehicle's original rotor, along with the 295 mm diameter and 10 mm thickness, you're in business. We always tell folks to cross-reference the Hella part number against their original equipment number before ordering, because brake geometry is one place you don't want to guess. A rotor that's a few millimeters off on diameter or hub bore won't seat right, and you'll know it the first time you touch the brakes.

A couple of install notes from the shop. First, this rotor is sold individually. Brakes are a per-axle job, so if you're replacing one side you should be doing both. Order two. Replacing rotors in pairs keeps your braking even side to side, which is what keeps the car tracking straight under hard stops. Second, plan on fresh pads at the same time. New pads on an old glazed rotor, or old pads on a fresh rotor, is a recipe for noise and uneven wear. Do them together and they bed in as a matched set.

Speaking of bedding, don't skip it. Once the rotor and pads are on, find a safe stretch of road and make a series of moderate stops from around 35 mph down to 10, then let the brakes cool. This lays down an even layer of pad material on the friction face and sets you up for quiet, consistent braking. The thin zinc coating on the swept area burns off in those first few stops, which is normal. The coating on the hat and vanes stays put and keeps doing its corrosion-fighting job.

Hella has been building replacement brake components for a long time, and the quality control shows in the details. The mounting face is machined flat and true, so you're not chasing runout right out of the box. The vane and hat geometry follows the original design, which keeps cooling and clearance where the engineers intended. For a wear part that you'll replace again down the line, paying for consistent machining and a proper anti-corrosion finish is money well spent. Cheap rotors warp early and rust fast. This isn't one of those.

Who's this for? Anyone doing routine brake maintenance on a vehicle that runs the 6 x 112 mm, 67 mm hub, 295 mm solid rotor setup. It's an honest OE-quality replacement, not a drilled-and-slotted track upgrade, and for daily driving that's exactly what you want. Predictable, quiet, corrosion-resistant, and true. Fit it, bed it, and forget it. That's the whole idea.