Front Brake Disc 43512-37150 for HINO 300 3.5T — 5-Hole Ventilated Rotor in FC250 Grey Cast Iron Precision CNC Machined

The Front Brake Disc (Rotor) with OEM reference number 43512-37150 is a verified direct-fit replacement for the HINO 300 series 3.5T commercial trucks from 2009 onward. This disc is a critical component of the braking system, mounted to the wheel hub and working in conjunction with the brake pads to slow and stop the vehicle.

When the brake pedal is pressed, the brake pads are pressed against the rotating disc, creating friction that converts kinetic energy into heat, ultimately slowing down or stopping the vehicle. A worn or damaged brake disc can lead to vibration or pulsation when braking, squealing or grinding noises, reduced braking performance, uneven brake pad wear, and increased stopping distances.

This OE-spec replacement disc restores factory braking performance and safety. Manufactured to meet or exceed original equipment standards, this disc features a vented design for superior heat dissipation and is produced from high-quality FC250 grey cast iron (GG25 equivalent) for reliable and safe braking.

Different HINO 300 series variants may use different front brake disc specifications. Below are alternative specifications found for other HINO 300 models:

Installation Guidelines (Reference HINO workshop manual for complete steps):

1. Safety first — securely support the vehicle on jack stands
2. Remove the front wheel
3. Remove the brake caliper and caliper bracket — support the caliper to avoid stressing the brake hose
4. Remove the brake disc retaining screws (if equipped)
5. Remove the old brake disc from the hub
6. Clean the hub mounting surface thoroughly — remove all rust and debris
7. Compare the new disc with the old unit — verify part number and dimensions match
8. Install the new brake disc onto the hub
9. Install the brake disc retaining screws (if applicable)
10. Reinstall the caliper bracket and caliper
11. Torque all bolts to manufacturer specification
12. Reinstall the wheel and torque lug nuts to specification
13. Bed in the new brake discs — follow manufacturer procedure for proper break-in
14. Road test — verify smooth braking without vibration or noise

Maintenance Schedule:

• Inspect brake discs for wear, scoring, or damage during every brake service
• Replace brake discs when they reach minimum thickness
• Replace brake discs in pairs (both front discs) for balanced braking performance
• Always replace brake pads when replacing brake discs

• Individually sealed in protective packaging (polybag)
• Packed in white/color box or on pallets
• Sold individually (1 disc per unit)
• Bulk wholesale available in master cartons
• Warranty: 1 year / 20,000 km
• Country of Origin: Made in Taiwan
• Suitable for: HINO specialist repair shops, commercial vehicle maintenance depots, fleet maintenance suppliers, auto parts distributors