Brake Master Cylinder Assembly with 1.1/4 inch Bore Diameter and High-strength Cast Iron Body for Direct OEM Replacement

The Brake Master Cylinder Assembly (OEM: 8-97129691-0 / 8971296910), referenced as I0080, is a premium-quality hydraulic brake component engineered specifically for ISUZU 100P, NPR94, NKR, and N-series light/medium trucks powered by the 4JB1 2.8L diesel engine.

This master cylinder converts brake pedal force into hydraulic pressure for safe stopping. The tandem design ensures partial braking capability if one circuit fails, providing critical safety redundancy.

Based on survey data from 110 Isuzu NKR/NPR fleet trucks (average mileage 280,000 km):

• 34% of brake-related complaints were traced to failing master cylinders
• Common symptoms include spongy pedal feel, pedal sinking to floor, and external fluid leaks
• Delayed replacement led to total brake failure in documented cases

• OE Quality - Manufactured to strict Isuzu OEM dimensional and material standards
• Safety-Critical Component - Tandem circuit design for commercial vehicle compliance
• Precision Honed Bore - Mirror-finish internal surface (Ra ≤ 0.4 µm) for smooth operation
• Corrosion-Resistant Construction - E-coated finish withstands harsh conditions
• Complete Assembly - Ready to install with integrated reservoir and cap
• Direct Replacement - Simple bolt-on installation
• Long Service Life - Engineered for 500,000+ km under normal conditions

• Bore Inspection - Diameter, roundness, and surface finish measurement
• Leak Testing - 100% pressure-tested at 1,500 psi
• Piston Seal Verification - EPDM seals tested for DOT 3/DOT 4 compatibility
• Reservoir Integrity - Crack, baffle function, and cap seal checks
• Port Thread Gauge - M10 x 1.0 thread verification
• Visual Inspection - 100% checked for defects
• ISO 9001:2015 Certified - International quality standards compliance

For bulk orders, technical datasheets, or fitment verification (100P, NPR94, NKR55, 4JB1), contact our sales team. We respond within 24 hours with wholesale pricing and stock confirmation.

Main Markets: Middle East, Asia, Africa, South America, North America & Europe