OEM Front Brake Drum 8-94385650-0 8943856500 8-94385650-3 For ISUZU NPR58/NPR66/NKR58/NKR66 4BE1 4HG1 — 320mm ID, 5-Stud, Cast Iron Replacement

The Front Brake Drum with OEM numbers 8-94385650-0 (also listed as 8943856500, 8-94385-650-0) is a verified OEM-grade direct replacement for ISUZU NPR58, NPR66, NKR58, and NKR66 series light-duty commercial trucks equipped with 4BE1 and 4HG1 diesel engines.

As the rotating component of the front drum brake system, this brake drum provides the friction surface against which the brake shoes press to slow and stop the vehicle. Manufactured to ISUZU's stringent OEM specifications, this drum is precision-cast from high-grade gray cast iron to ensure dimensional stability, heat dissipation, and long service life under continuous braking demands.

This brake drum features a 320mm inside diameter and a 5-stud wheel bolt pattern, matching factory-original specifications for the ISUZU N-Series platform.

• OEM Specification — Verified by ISUZU OEM part numbers 8-94385650-0, 8943856500, 8-94385-650-0, and 8-94385650-3
• Precision 320mm Inside Diameter — Verified by Bretts Truck Parts and multiple parts catalogs: 320mm ID, 5-stud pattern
• Proven Durability — Constructed from high-grade gray cast iron with precision-machined friction surface
• Verified OEM Fitment — Confirmed for ISUZU NPR58 (1988-1993, 1994-1995), NPR66 (1991-2002), NKR58 (1987-1994), NKR66 (1994-2005), and NPR70 (2002-2005) models
• Net Weight 17.6 kg — Verified by multiple parts catalogs
• ISO/TS16949 Certified — Manufactured under strict quality control standards
• OEM Cross-Reference Verified — Interchangeable with ZEVS BD0411, 2G0027, and other aftermarket equivalents

If your front brake drum is failing, you may experience one or more of the following symptoms:

• Brake Squealing or Grinding Noise: High-pitched squealing or metallic grinding during braking
• Brake Vibration or Pulsation: Steering wheel or brake pedal pulsates during braking
• Reduced Braking Performance: Increased stopping distance or soft brake pedal
• Vehicle Pulls to One Side: Uneven braking force causing vehicle drift during braking
• Visible Cracks or Heat Checking: Cracks, heat spots, or deep grooves on drum friction surface
• Brake Drum Out of Round: Drum surface no longer circular, causing uneven brake shoe contact

Our manufacturing and inspection processes ensure every brake drum meets or exceeds ISUZU OEM standards.

Pre-Installation Checklist:

• Quantity Required: 2 per vehicle (one for each front wheel)
• Inspect the brake shoes, wheel cylinders, and hardware for wear — replace as necessary
• CRITICAL: Always replace brake shoes when installing new drums for optimal braking performance
• Clean the axle hub and drum mounting surface thoroughly
• Check the wheel studs for damage or corrosion — replace if necessary
• Safety First: Ensure the vehicle is securely supported on jack stands. Never work under a vehicle supported only by a jack

Installation Guidelines (Reference ISUZU workshop manual):

1. Safely raise the vehicle and support it on jack stands
2. Remove the front wheel and brake drum retaining hardware
3. Remove the old brake drum from the axle hub
4. Clean the axle hub mounting surface thoroughly
5. CRITICAL: Inspect the brake shoes for wear or contamination — replace if necessary
6. Install the new brake drum onto the axle hub
7. CRITICAL: Torque the wheel nuts to manufacturer's specified torque settings in a star pattern
8. Adjust brake shoe clearance as specified
9. Reinstall the wheel and lower the vehicle
10. CRITICAL: Pump the brake pedal several times to seat the brake shoes against the drum before driving
11. Test drive to verify smooth braking performance and check for unusual noises or vibration

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months. Check drum inside diameter for wear — replace if it exceeds the maximum wear limit
• Measurement: Measure drum inside diameter at multiple points to check for out-of-round or taper
• Replacement: Recommended when the drum inside diameter exceeds the maximum specification or if cracks, deep grooves, or heat checking are present
• Note: Always replace brake drums in pairs (both front wheels) for balanced braking performance

• Packaging: Each brake drum is securely packed in a heavy-duty carton to prevent shipping damage
• Pack Quantity: 1 PC (sold individually) or 2 PCS (complete front axle set)
• Net Weight: Approx. 17.6 kg per drum
• MOQ: 10 pieces
• Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners