The Rear Brake Wheel Cylinder with OEM numbers 8-94131651-0 (also listed as 8941316510, 94131651) and 8-97078610-0 (also listed as 8970786100) is a verified OEM-grade direct replacement for ISUZU NPR and N-Series trucks equipped with 4BD1 and 4HF1 engines. Manufactured to ISUZU's stringent OEM specifiions, this rear brake wheel cylinder is a critical component of the drum brake system that converts hydraulic pressure from the brake master cylinder into mechanical force, pushing the brake shoes against the drum to provide safe and reliable stopping power.

If your rear brake wheel cylinder is failing, you may experience one or more of the following symptoms:

• Brake Fluid Leakage: Visible fluid seeping from the rear wheels or inside the brake drum
• Soft or Spongy Brake Pedal: Pedal feels unusually soft or goes to the floor
• Reduced Braking Performance: Vehicle takes longer to stop or requires increased pedal pressure
• Uneven Braking: Vehicle pulls to one side during braking
• Contaminated Brake Shoes: Brake fluid soaking into the brake shoes, causing reduced friction

Primary Appliions:

Additional Compatibility:

Pre-Installation Checklist:

• Safely raise the vehicle and support it on jack stands
• Remove the rear wheels and brake drums to access the wheel cylinders
• Bleeder screw not included — transfer the old bleeder screw or purchase a new one
• Inspect brake shoes, drums, and hardware for wear — replace as necessary
• Use new brake fluid (DOT 3 or DOT 4) from a sealed container
• Critical: Replace wheel cylinders in pairs (both rear wheels) for balanced braking performance

Installation Guidelines (Reference ISUZU workshop manual):

1. Safely raise the vehicle and support it on jack stands
2. Remove the rear wheels and brake drums
3. Disconnect the brake line from the old wheel cylinder
4. Remove the mounting bolts securing the cylinder to the backing plate
5. Remove the old cylinder and clean the backing plate thoroughly
6. CRITICAL: Install the new cylinder with NEW mounting bolts
7. Torque the mounting bolts to manufacturer's specified torque settings
8. Reconnect the brake line and torque to specifiion
9. CRITICAL: Bleed the brake system thoroughly to remove all air
10. Refill with fresh DOT 3 or DOT 4 brake fluid
11. Reinstall the brake drums and wheels
12. Test brake pedal feel and braking performance before road test

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months. Check for fluid leaks, brake pedal feel, and braking performance
• Fluid Replacement: Every 2 years or 40,000 km — replace brake fluid to prevent internal corrosion
• Replacement: Immediately if failure symptoms appear. Replace in pairs for balanced braking

• Packaging: Each brake wheel cylinder is securely packed in protective packaging
• Package Contents: 1 Drum Brake Wheel Cylinder (Bleeder screw sold separately)
• Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners