OEM 2100320470 Rear Brake Drum Cast Iron 5-Hole Direct Fit for JAC N56 Light Truck Brake Drum Replacement
| Material: | Cast Iron | Bolt Holes: | 5 |
| Total Height: | ~145 Mm | OEM Part Number: | 2100320470 |
| Related Part Number: | 2100320390 | Design: | Ribbed Outer Casting |
| Condition: | Brand New | Vehicle Model: | JAC N56 |
| High Light: | OEM 2100320470 Brake Drum,Cast Iron Brake Drum,5-Hole Rear Brake Drum |
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OEM Rear Brake Drum 2100320470 for JAC N56 Light Truck — a direct-fit cast iron brake drum featuring a 5-hole flange and ribbed outer design. This drum works with the brake shoes to slow and stop the vehicle through internal expansion friction.
Working Principle: The brake drum rotates with the wheel hub. When the driver applies the brakes, hydraulic pressure pushes the brake shoes outward against the inner surface of the drum. The friction between the shoes and drum converts kinetic energy into heat, slowing the vehicle. The drum must maintain roundness, balanced rotation, and minimum thickness to ensure safe, vibration-free braking. A worn or out-of-round drum causes pedal pulsation, noise, and reduced braking efficiency.
- Confirmed OEM Number: 2100320470 — confirmed by product label "2100320470 制动鼓后 JAC N56"
- Confirmed Part Name: Rear Brake Drum / 制动鼓后 — confirmed by product label
- Confirmed Vehicle Compatibility: JAC N56 — confirmed by product label
- Confirmed Material: Cast iron — ribbed outer surface, machined friction ring (visual inspection)
- Confirmed Design: 5-bolt flange, ribbed outer casting for strength and heat dissipation (per product photos)
- Confirmed Related Part Number: 2100320390 — listed as associated/alternative number by some suppliers
- Pending Critical Dimensions: Inner diameter, outer diameter, PCD, bolt hole diameter, total height, weight — must be measured from your actual stock
- Pending Bench Test Data: Hardness, thermal crack resistance, dynamic balance — recommend supplying your own test report
- Pending Installation 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 drum surface
- Longer stopping distance or reduced braking efficiency
- Vehicle pulls to one side during braking
| Part Number | 2100320470 | Product Name | Rear Brake Drum |
|---|---|---|---|
| Car Model | JAC N56 | Engine Model | JAC N56 |
| 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 Make It As Requested |
| Warranty | 6 Months | Price & Stock | Please Contact Us To Get 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 for JAC N56 | Direct replacement for worn or out-of-round original drum — part number confirmed by product label |
| Cast iron construction | Withstands braking heat and friction — material confirmed by visual inspection |
| Ribbed outer design | Adds strength and aids heat dissipation — confirmed by product photos |
| 5-bolt flange | Standard mounting configuration for N56 rear axle — confirmed by product photos |
| QC Item | Verification Method |
|---|---|
| Drum inner diameter | Micrometer / caliper measurement Spec Pending |
| Roundness | Dial indicator on inner surface Spec Pending |
| Surface hardness | Hardness test Spec Pending |
| Crack detection | Visual + dye penetrant inspection Spec Pending |
| Dynamic balance | Brake drum balancer Spec Pending |
| Bolt hole PCD | Caliper measurement Spec Pending |
- Raise vehicle and secure on stands. Remove wheel.
- Remove brake drum retaining screws/clips. Slide drum off hub. If seized, use brake drum puller.
- Clean hub surface and inspect brake shoes for wear.
- Install new drum. Secure retaining screws.
- Adjust brake shoe clearance per OEM spec Spec Pending — verify against JAC manual.
- Reinstall wheel. Pump brake pedal to seat shoes before driving.
- Test brakes at low speed first.
Inspect brake drums at every tire rotation or every 10,000 km. Measure inner diameter and check for cracks, deep grooves, or heat spots. Replace drums when worn beyond maximum diameter or when symptoms (pulsation, noise, reduced braking) appear. Replace brake shoes as a set when worn.
- Neutral box / color box / custom brand packaging
- Suitable for: Wholesale distributors, brake repair workshops, JAC parts suppliers
- MOQ: Small orders accepted
- Delivery: Pending — varies by supplier
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