Genuine Toyota Front Brake Disc 43512-42040 — 275mm Diameter 25mm Thickness Vented Design OEM Rotor
| Disc Thickness: | 25 Mm | Outer Diameter: | 275 Mm |
| Minimum Thickness: | 22 Mm | Bolt Circle Diameter: | 114.3 Mm |
| Number of Holes: | 5 | Height: | 46.5 Mm |
| Weight: | 14.35 Kg | Center Hole Diameter: | 62 Mm |
| High Light: | Genuine Toyota front brake disc,OEM vented brake rotor 275mm,Toyota brake disc 25mm thickness |
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The Front Brake Disc (Rotor) with OEM reference number 43512-42040 is a genuine, verified direct-fit replacement for a range of Toyota, Scion, and Lexus vehicles. 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 materials to ensure superior quality and long-lasting reliability.
| Part Number | 43512-42040 | Product Name | Front Brake Disc |
|---|---|---|---|
| Car Model | Toyota RAV4 4.4 Prius V Scion xB | Engine Model | Toyota |
| Condition | 100% Brand New | Size | Standard |
| Weight | Standard | Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe | ||
| Package | Neutral Packing Or Make It As Requested | ||
| Material | High-strength aluminum alloy & precision bearings | Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement | Quality Standard | OEM equivalent / ISO quality control |
Primary Applications (Toyota, Scion, Lexus):
| Brand | Model | Chassis / Body | Engine / Years |
|---|---|---|---|
| Toyota | RAV4 | XA40 (2013-2018) — Japan built / LE Trim | 2.4L & 2.5L, without 3rd row seat |
| Toyota | RAV4 Hybrid | XA40 (2016-2018) | 2.5L Hybrid |
| Toyota | Prius V / α | ZVW4_ (2012-2017) | 1.8L Hybrid |
| Toyota | Prius α | 4WD (DBA-ZRR85G) | 3ZRFAE engine, 2014/10-2021/12 |
| Toyota | Esquire | 4WD (DBA-ZRR85G) | 3ZRFAE engine, 2014/10-2021/12 |
| Scion | xB | (2011-2015) | 2.4L L4 |
| Lexus | HS 250h | (2010) | Hybrid |
- This is a front axle disc only. It is a vented disc with a 275mm diameter and 25mm thickness.
- RAV4 Japan-built LE trim uses this disc; Canada-built and non-LE trims may use different part numbers (43512-0R010, 43512-0R020).
- For Lexus HS 250h, this part is also listed as 4351242080.
- Always verify your vehicle's original part number and specifications before ordering. When in doubt, check the stamped part number on your existing disc or consult your vehicle's workshop manual.
| Symptom | Description |
|---|---|
| Vibration or pulsation | Steering wheel or brake pedal pulsates when braking |
| Squealing or grinding | Unusual noises during braking |
| Reduced braking performance | Longer stopping distances |
| Uneven pad wear | Brake pads wearing unevenly |
| Visible damage | Scoring, cracks, or warping on the disc surface |
| QC Item | Verification Method |
|---|---|
| Dimensional accuracy | Precision measurement — outer diameter (275mm), thickness (25mm), center hole (62mm), height (46.5mm), PCD (114.3mm), 5-hole pattern |
| Material composition | High-grade materials verification — ensures proper wear resistance and heat dissipation |
| Runout / Balance | Precision measurement — ensures smooth braking without vibration |
| Surface finish | Visual and dimensional inspection — ensures proper pad contact |
| Internal defects | Inspection for cracks, porosity, or surface imperfections |
| Toyota OEM standards | Manufactured and tested to strict Toyota specifications |
| Batch traceability | Each production batch documented with quality certificates |
(Reference Toyota workshop manual for complete steps):
- Safety first — securely support the vehicle on jack stands
- Remove the front wheel
- Remove the brake caliper and caliper bracket — support the caliper to avoid stressing the brake hose
- Remove the brake disc retaining screws (if equipped)
- Remove the old brake disc from the hub
- Clean the hub mounting surface thoroughly — remove all rust and debris
- Compare the new disc with the old unit — verify part number (43512-42040) and dimensions (275mm diameter, 25mm thickness) match
- Install the new brake disc onto the hub
- Install the brake disc retaining screws (if applicable)
- Reinstall the caliper bracket and caliper
- Torque all bolts to manufacturer specification
- Reinstall the wheel and torque lug nuts to specification
- Bed in the new brake discs — follow manufacturer procedure for proper break-in
- Road test — verify smooth braking without vibration or noise
- Inspect brake discs for wear, scoring, or damage during every brake service
- Replace brake discs when they reach minimum thickness (22mm)
- 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
- Sold individually (1 disc per unit)
- Packed in carton
- Bulk wholesale available in master cartons
- Suitable for: Toyota specialist repair shops, independent garages, auto parts distributors
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