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Rear Brake Wheel Cylinder 8-97139840-0 For Isuzu NKR55 4JB1 8971398400
Product Overview
The Rear Brake Wheel Cylinder (OEM Numbers: 8-97139840-0 / 8971398400 and 8-94128141-3 / 8941281413) is a premium-quality, direct replacement hydraulic component designed for the rear drum brake system of Isuzu NKR55 light-duty trucks equipped with the 4JB1 diesel engine.
Direct Replacement: Matches OE mounting bolt pattern, inlet port loion, and bleeder screw position
Cost-Effective: Affordable alternative to genuine OEM without compromising safety
Vehicle & Engine Compatibility
This rear brake wheel cylinder is specifically designed for Isuzu NKR55 trucks with 4JB1 engine.
Isuzu Vehicle Models:
ISUZU NKR55 (light-duty truck, 4JB1 engine)
May also fit other Isuzu NKR/NPR models with similar rear brake system - verify
Engine Specifiion - ISUZU 4JB1:
4-Cylinder, Inline Diesel, OHV
Displacement: 2.8L (2771cc)
Installation Notes
Installation steps (typical for rear wheel cylinder):
Safely lift and support the vehicle - remove the rear wheel and brake drum
Clean the brake assembly - use brake cleaner to remove dust and debris
Disconnect the brake line - from the back of the old wheel cylinder using a flare nut wrench. Cap the line
Remove the old wheel cylinder - unbolt the two mounting bolts from the backing plate
Clean the backing plate mounting surface - remove old gasket/sealant
Compare new cylinder with old - verify bore size, bolt spacing, and port orientation
Install new wheel cylinder - apply a thin film of brake grease to the mounting flange. Bolt to backing plate. Torque bolts to specifiion (typically 10-15 Nm)
Reconnect the brake line - hand-start, then tighten with flare nut wrench. Do not cross-thread
Reinstall brake shoes and hardware - ensure pushrods engage properly
Reinstall brake drum and wheel - adjust shoes if needed
Bleed the brake system - start from the wheel farthest from the master cylinder
Check for leaks - inspect the new cylinder and line fitting
Test drive - ensure proper braking and no pulling
Quality Control
Material Verifiion: Body alloy and seal compound tested
Dimensional Inspection: Bore diameter, bolt hole spacing, and thread pitch verified against OE samples
Leak Test (Hydraulic): Each cylinder pressurized to ensure no internal or external leakage
Piston Movement Test: Smooth operation confirmed over full stroke
Thread Inspection: Inlet and bleeder threads checked with GO/NO-GO gauges
Visual Inspection: 100% checked for casting defects, scratches, or damaged ports
Packaged Safely: Cylinder sealed in plastic bag, boxed with foam protection
Packaging and Delivery
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
Inquiry
For pricing, availability, or bulk purchase of the Rear Brake Wheel Cylinder 8-97139840-0 For Isuzu NKR55 4JB1 8971398400, please contact our sales team for a competitive quote and expert technical support.
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 ...
