Front Brake Disc 43512-37120 For HINO 300 Series — OE-Spec Vented Rotor

Product Description

The Front Brake Disc (Rotor) with OEM reference number 43512-37120 is a verified direct-fit replacement for the HINO 300 series commercial trucks. 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 grey cast iron (FC250 / G3000 equivalent) for reliable and safe braking-20.

Replaces OEM Numbers: 43512-37120 | Cross-Reference: Blue Print ADT343263

Vehicle Compatibility

Primary Applications (HINO 300 Series):

⚠️ Important: This disc is for the front axle only. It is a vented disc with a 287mm diameter and 40mm thickness. Always verify your vehicle's original part number and specifications before ordering.

Common Failure Symptoms

Features & Benefits

Quality Control & Verification

Installation & Maintenance Recommendations

⚠️ IMPORTANT: Brake disc replacement requires mechanical competence and proper safety precautions. Professional installation recommended.

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 (43512-37120) and dimensions (287mm diameter, 40mm thickness) 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 (37mm)--2

• Replace brake discs in pairs (both front discs) for balanced braking performance

• Always replace brake pads when replacing brake discs

Packaging & Supply

• Individually sealed in protective packaging

• Sold individually (1 disc per unit)

• Packed in polybag, white/color box, or on pallets-20

• Bulk wholesale available in master cartons

• Warranty: 1 year / 20,000 km-20

• Country of Origin: Made in Taiwan-20

• Suitable for: HINO specialist repair shops, commercial vehicle maintenance depots, fleet maintenance suppliers, auto parts distributors