OEM 3501121LD040 Brake Disc Front Brake Rotor for JAC N56 1040S HFN721 IZUMI Aftermarket Truck Part
| Material: | Metal | Color: | Silver |
| Installation Position: | Front Axle, Left Or Right Side | OEM Part Number: | 3501121LD040 |
| Condition: | Brand New | Unit: | PCS |
| Inspection Interval: | Every 10,000 Km | Packaging Type: | Neutral Box / Color Box / Custom Brand Packaging |
| High Light: | OEM 3501121LD040 Brake Disc,JAC N56 1040S HFN721 Brake Rotor,IZUMI Aftermarket Brake Disc |
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The Brake Disc with OEM number 3501121LD040 is a direct-fit replacement front brake rotor for JAC N56, 1040S, and HFN721 light trucks. It works together with the brake caliper and pads to slow and stop the vehicle through friction.
Working Principle: The brake disc rotates with the wheel hub. When the driver applies the brakes, the caliper squeezes the brake pads against the disc surface. Friction converts kinetic energy into heat, slowing the vehicle. The disc must maintain minimum thickness, flatness, and balanced rotation to ensure safe, vibration-free braking. A worn or warped disc causes pedal pulsation, noise, and longer stopping distances.
- ConfirmedOEM Number: 3501121LD040 — confirmed across multiple independent suppliers.
- ConfirmedPart Name: Brake Disc / Brake Rotor / ブレーキディスク / Disco del freno — confirmed in Japanese, Italian, Vietnamese, French, and Greek listings.
- ConfirmedVehicle Compatibility: JAC N56 — confirmed by IZUMI and BZLP sources; JAC 1040S and HFN721 also listed by MAMUR.
- ConfirmedMaterial: Metal — per BZLP supplier listing.
- ConfirmedColor: Silver — per BZLP supplier listing.
- ConfirmedAftermarket Brands: IZUMI (3-month warranty, delivery 15–20 days) / BZLP / MAMUR (delivery 5–30 days).
- Fitment NoteCritical Fitment Note: Some Russian suppliers list a different part number YF35A10401075 for the JAC N56 front brake disc. Verify your vehicle's original disc number before ordering.
- PendingCritical Specifications Pending: Disc diameter (mm), thickness (mm), minimum thickness, ventilation type (solid/vented), bolt hole count, PCD, and overall height — must be measured from your actual stock or verified against OEM specification.
- PendingBench Test Data: Hardness, thermal crack resistance, and dynamic balance — recommend supplying your own test report.
- PendingInstallation Success Rate: Recommend providing repair order statistics.
- Brake pedal pulsation or vibration during braking
- Squealing, grinding, or scraping noise when braking
- Visible deep grooves, scoring, or heat cracks on the disc surface
- Longer stopping distance or reduced braking efficiency
- Vehicle pulls to one side during braking
| Part Number | 3501121LD040 | Product Name | Brake Disc |
|---|---|---|---|
| Car Model | JAC N56 / 1040S / HFN721 | Engine Model | JAC N56 / 1040S / HFN721 |
| Condition | 100% Brand New | Size | — |
| Weight | Standard | Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe | Package | Neutral packing or made as requested |
| Warranty | 6 months | Price & Stock | Please contact us for more information |
| Material | High-strength aluminum alloy & precision bearings | Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement | Quality Standard | OEM equivalent / ISO quality control |
| Feature | Benefit & Verification Signal |
|---|---|
| OEM-matched fitment | Direct replacement for worn or warped original disc — OEM number confirmed across multiple suppliers. |
| Metal construction | Withstands braking heat and friction — material confirmed by supplier listing. |
| IZUMI aftermarket brand | Established aftermarket option with 3-month warranty — per supplier listing. |
| MAMUR aftermarket option | Alternative brand with 25+ years in Chinese truck parts — per supplier profile. |
| QC Item | Verification Method |
|---|---|
| Disc thickness | Micrometer measurement (spec pending) |
| Disc runout | Dial indicator on braking surface (spec pending) |
| Surface hardness | Hardness test (spec pending) |
| Crack detection | Visual + dye penetrant inspection (spec pending) |
| Dynamic balance | Brake disc balancer (spec pending) |
⚠️ IMPORTANT: Brake system work is safety-critical. Replace discs in axle pairs (both left and right). Use new brake pads when installing new discs. Clean the hub surface before installation. Professional workshop installation is strongly recommended.
- Raise the vehicle and secure it on stands. Remove the wheel.
- Remove the brake caliper and hang it aside (do not disconnect the hydraulic line unless necessary).
- Remove the caliper bracket if required. Remove the disc retaining screws/bolts.
- Slide the old disc off the hub. Clean the hub surface thoroughly.
- Install the new disc. Secure the retaining screws. Check disc runout with a dial indicator (⚠️ spec pending).
- Reinstall the caliper bracket and caliper with new brake pads.
- Bleed the brake system if lines were opened.
- Pump the brake pedal to seat the pads before driving. Test the brakes at low speed first.
Inspect brake discs at every tire rotation or every 10,000 km. Measure thickness and check for cracks, deep grooves, or heat spots. Replace discs when below minimum thickness or when symptoms (pulsation, noise, reduced braking) appear. Replace brake pads as a set when worn.
- Neutral box / color box / custom brand packaging
- Suitable for: wholesale distributors, brake repair workshops, and JAC parts suppliers
- MOQ: small orders accepted; better pricing for large orders
- Unit: PCS
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