Yimi (Guangzhou) Automotive Parts Co, Ltd
| Bore Finish | Precision-Honed for Smooth Piston Operation |
| Engine Applications | ISUZU NQR 4HK1 Diesel Engine |
| Packaging Details | Neutral Package or as customers’ request |
| Delivery Time | 5-8 Work Days |
| Material | Metal / Plastic |
| Payment Terms | T/T |
| Part No | 8981917872, 8-98191787-2 |
| Type | Brake Master Vacuum |
| Mounting Type | Bolt-On to Brake Booster / Firewall |
| Seal Material | High-Quality Brake Fluid-Resistant Rubber |
| Fitment | OEM Standard, Direct Replacement |
| Vehicle Application | ISUZU NPR, ISUZU NQR |
| H/S Code | 870830000 |
| Condition | Brand New |
| Supply Ability | 10000 pcs/month |
| Part Name | Brake Master Cylinder / Brake Master Vacuum Assembly |
| Model Number | ISUZU NPR, ISUZU NQR |
| Certification | ISO/TS16949 |
| Brand Name | YIMI |
| Place of Origin | China |
View Detail Information
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Product Specification
| Bore Finish | Precision-Honed for Smooth Piston Operation | Engine Applications | ISUZU NQR 4HK1 Diesel Engine |
| Packaging Details | Neutral Package or as customers’ request | Delivery Time | 5-8 Work Days |
| Material | Metal / Plastic | Payment Terms | T/T |
| Part No | 8981917872, 8-98191787-2 | Type | Brake Master Vacuum |
| Mounting Type | Bolt-On to Brake Booster / Firewall | Seal Material | High-Quality Brake Fluid-Resistant Rubber |
| Fitment | OEM Standard, Direct Replacement | Vehicle Application | ISUZU NPR, ISUZU NQR |
| H/S Code | 870830000 | Condition | Brand New |
| Supply Ability | 10000 pcs/month | Part Name | Brake Master Cylinder / Brake Master Vacuum Assembly |
| Model Number | ISUZU NPR, ISUZU NQR | Certification | ISO/TS16949 |
| Brand Name | YIMI | Place of Origin | China |
| High Light | Brake Master Cylinder 8981917872 ，ISUZU NPR NQR 4HK1 Truck Cylinder ，Isuzu Chassis Brake Master Cylinder | ||
Brake Master Cylinder 8981917872 8-98191787-2 For ISUZU NPR NQR 4HK1 Truck
Product Description
Function :
Brake master cylinder converts brake pedal force into hydraulic pressure, delivering fluid to wheel cylinders for safe and reliable braking in ISUZU NPR and NQR trucks.
Product Description :
The Brake Master Cylinder (OEM Numbers: 8981917872 / 8-98191787-2) is a premium-quality, direct replacement hydraulic brake component designed specifically for ISUZU NPR and NQR series trucks equipped with 4HK1 diesel engines. This complete brake master cylinder assembly – also known as a brake master vacuum assembly or brake master cylinder with booster – is the heart of the vehicle's hydraulic brake system. It converts mechanical force from the brake pedal into hydraulic pressure, distributing brake fluid through the brake lines to the wheel cylinders or calipers, ensuring safe and reliable stopping power.
| Part Number: | 8981917872, 8-98191787-2 | Product Name: | Brake Master Cylinder / Brake Master Vacuum Assembly |
|---|---|---|---|
| Car Model: | ISUZU NPR, ISUZU NQR | Engine Model: | ISUZU NQR 4HK1 Diesel Engine |
| 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 Monthes | 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 |
Features & Advantages
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 hydraulic pressure.
Durable Construction: Metal and plastic housing resists corrosion and wear for long service life.
Reliable Braking Performance: Provides consistent hydraulic pressure and smooth pedal feel.
Integrated Vacuum Booster: Uses engine vacuum to reduce pedal effort and improve braking response (where applicable).
Restores Braking Power: Eliminates spongy pedal, low pedal, and reduced braking performance caused by a faulty master cylinder.
Direct Replacement: Matches OE master cylinder dimensions, mounting points, and hydraulic connections.
Long Service Life: Engineered for commercial truck applications.
Essential Safety Component: Critical for reliable braking and vehicle safety.
3-Month Warranty: Backed by a 3-month warranty against manufacturing defects.
Vehicle & Engine Compatibility
This brake master cylinder is specifically designed for ISUZU medium-duty trucks and commercial vehicles. Common applications include:
ISUZU NPR (Medium-Duty Trucks)
ISUZU NQR (Medium-Duty Trucks)
Engine Specifications:
ISUZU 4HK1 — 5.2L Inline-4 Turbo Diesel
Application: Medium-duty trucks and commercial vehicles
Installation Notes
Professional mechanic installation is essential for safety:
Ensure vehicle is on level ground – Safely raise and support the vehicle if required.
Drain brake fluid – Remove old brake fluid from the reservoir using a clean suction tool.
Disconnect brake lines – Carefully disconnect the brake lines from the master cylinder; cap the lines to prevent fluid loss and contamination.
Remove the master cylinder – Unbolt the master cylinder from the brake booster or firewall.
Bench bleed the new master cylinder – Before installation, bench bleed the new cylinder to remove air and prime the internal chambers.
Position the new cylinder – Install the new master cylinder on the brake booster/firewall; hand-start mounting bolts.
Torque mounting bolts – Tighten bolts to manufacturer torque specifications.
Connect brake lines – Reconnect the brake lines to the master cylinder; torque line fittings to specification.
Refill with fresh brake fluid – Fill the reservoir with the recommended brake fluid (DOT 3 or DOT 4 as specified).
Bleed the brake system – Bleed all four brake circuits in the correct sequence (typically furthest from the master cylinder first).
Check for leaks – Inspect all connections for fluid leaks; ensure the master cylinder is not leaking.
Test brake pedal – Pump the brake pedal; ensure firm pedal feel and proper pedal height.
Road test – Test the brakes at low speed in a safe area; verify proper stopping performance.
Quality Control
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.
Packaging and Delivery
Inquiry
For pricing, availability, or bulk purchase of the Brake Master Cylinder 8981917872 8-98191787-2 For ISUZU NPR NQR 4HK1 Truck , please contact our sales team for a competitive quote and expert technical support.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
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