Hella 355113192 Vented Disc Brake Rotor

When a brake rotor is worn past spec, you feel it. Pulsing through the pedal, a shimmy in the wheel under hard braking, that faint grind you can't quite ignore. The Hella 355113192 is a direct-replacement vented disc brake rotor built to put that behind you. It's a one-piece casting in gray cast iron, 350 millimeters across, finished with a zinc coating that fights the surface rust rotors pick up sitting in a wheel well through a wet season.

The vented design is the important part here. Instead of one solid disc, the two braking faces are separated by internal vanes that pull air through the rotor as the wheel spins. That airflow carries heat away from the pad contact area, which is exactly what you want on a heavier vehicle or anything that sees repeated hard stops. Heat is what kills braking performance. A rotor that sheds it stays truer, resists warping, and gives you consistent pedal feel stop after stop. The one-piece construction keeps the whole thing simple and strong, with the hat and the braking ring cast as a single unit.

The zinc coating does real work too. Bare cast iron flashes orange with surface rust almost overnight, and while the pad wipes the friction face clean every time you brake, the hat, the outer edges, and the cooling vanes stay exposed. That's where corrosion takes hold, and it's what looks ugly through an open wheel. The zinc layer slows all of that down. It won't make the rotor immortal, but it'll keep it looking and working right a lot longer, and it makes the eventual removal at your next brake job far less of a fight with a rusted-on hub.

Fitment comes down to the numbers, so match them carefully. This rotor measures 350 millimeters in diameter, 32 millimeters thick across the braking surface, and 54.5 millimeters in overall height from the hub face to the outer lip. The center hub bore is 67 millimeters and the wheel bolt pattern is 8 by 112 millimeters. Before you order, confirm those figures against the rotor you're pulling off or the OE part number for your vehicle. Diameter, thickness, hub bore, and bolt pattern all have to line up. If any one of them is off, it won't seat right, so it's worth the two minutes to measure.

A few install notes from doing plenty of these. Replace rotors in axle pairs, both fronts or both rears together, so braking stays even side to side. Fresh rotors almost always want fresh pads, and new pads on a new rotor need a proper bed-in, a series of moderate stops that lay down an even transfer layer before you lean on them hard. Clean the hub face down to bare metal before the rotor goes on, because any rust scale or debris trapped under the hat is a direct path to runout and that pedal pulse you were trying to fix in the first place. Torque the wheel to spec in a star pattern. And give the pedal a firm pump before you roll, so the pads are seated up against the disc.

One more thing worth knowing. Every rotor has a minimum, or discard, thickness stamped into the hat by the manufacturer. When you measure the old one across the braking surface and it's at or below that number, it's done, and machining it further isn't safe. A fresh rotor like this one starts you back at full thickness with plenty of service life ahead.

Hella has been building braking and vehicle components for the OE and aftermarket world for a long time, and this rotor is cut from that same cloth. It's sold as a single rotor, so order the quantity you need for the axle. It's the kind of straightforward, correctly-made replacement part that gets your brakes back to how they should feel, no drama. And if you're not sure whether this is the right rotor for your setup, send us the dimensions or your part number and we'll help you confirm before you buy.