Rear Brake Wheel Cylinder 8-97358879-0 8973588790 For ISUZU NPR 4HK1 Engine

The Rear Brake Wheel Cylinder (OEM Numbers: 8-97358879-0 / 8973588790) is a premium-quality, direct replacement hydraulic brake component designed specifically for ISUZU NPR series medium-duty trucks equipped with 4HK1 diesel engines.

Function: Converts hydraulic pressure from the master cylinder into mechanical force to push brake shoes against the drum, ensuring safe and effective rear braking in ISUZU NPR 4HK1 trucks.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• Precision-Honed Bore: Smooth, accurate bore ensures consistent piston movement and reliable brake actuation
• Durable Seals: High-quality brake fluid-resistant seals prevent leaks and ensure long service life
• Corrosion-Resistant Housing: Treated cast iron or aluminum housing resists corrosion from moisture and road salt
• Restores Braking Performance: Eliminates spongy pedal feel, pulling, and reduced stopping power
• Prevents Brake Fluid Leaks: Precision seals and machining prevent fluid loss that compromises braking safety
• Direct Replacement: Matches OE cylinder dimensions, mounting points, and brake line connections
• Even Brake Application: Replacing in pairs ensures balanced, pull-free braking
• Essential for Brake Safety: Critical component that directly affects vehicle stopping distance and safety

This rear brake wheel cylinder is specifically designed for ISUZU medium-duty trucks and commercial vehicles:

• ISUZU NPR (Medium-Duty Trucks)
• ISUZU N Series (NP - as applicable)
• ISUZU 4HK1 Engine Specifications:
  • 4-Cylinder, Inline Turbo Diesel
  • Displacement: 5.2L
  • Application: Medium-duty trucks and commercial vehicles

Also compatible with various ISUZU models using the same rear drum brake system configuration.

Professional mechanic installation is essential for safety:

1. Ensure vehicle is safely raised - Use appropriate jack stands to support the vehicle; remove the rear wheel
2. Remove the brake drum - Remove the brake drum to access the wheel cylinder and brake shoes
3. Remove the brake shoes - Carefully remove the brake shoe assembly; note the spring and hardware positions
4. Disconnect the brake line - Disconnect the brake fluid line from the wheel cylinder; cap the line to prevent fluid loss
5. Remove the old wheel cylinder - Unbolt the wheel cylinder from the backing plate
6. Inspect the backing plate - Check the backing plate for damage, wear, or corrosion
7. Install the new wheel cylinder - Position the new cylinder on the backing plate; install mounting bolts
8. Torque mounting bolts - Tighten bolts to manufacturer torque specifications
9. Reconnect the brake line - Reconnect the brake line to the new cylinder; torque the fitting to specification
10. Reinstall brake shoes - Reinstall the brake shoe assembly with new springs and hardware
11. Adjust brake shoes - Adjust the brake shoe-to-drum clearance to manufacturer specification
12. Reinstall the brake drum - Install the brake drum; ensure proper fit and adjustment
13. Bleed the brake system - Bleed the brake system to remove air; start with the wheel furthest from the master cylinder
14. Check for leaks - Inspect all connections for fluid leaks; ensure the cylinder is not leaking
15. Test brake pedal - Pump the brake pedal; ensure firm pedal feel and proper pedal height
16. Road test - Test the brakes at low speed in a safe area; verify proper stopping performance

• Material Verification: Confirms housing and seal materials meet ISUZU durability and brake fluid compatibility specifications
• Bore Dimensional Inspection: Cylinder bore diameter, finish, and roundness verified within OEM tolerances
• Seal Integrity Testing: Each cylinder tested for seal performance and leak-proof operation
• Piston Fit Verification: Piston fit and movement checked for smooth operation
• Pressure Testing: Sample tested to ensure consistent hydraulic pressure output
• Visual Inspection: 100% checked for casting defects, machining flaws, and seal damage
• Packaged Safely: Protected and packaged to prevent damage during transit

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea