ISUZU TFR 4JA1 4JB1 Vane-Type Hydraulic Power Steering Oil Pump with 7.0 L/min Flow Rate and 98 bar Maximum Pressure
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
4JA1 4JB1
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Nominal Displacement: | 7.2 Ml/r | Net Weight: | Approx. 2.0 Kg |
| Pump Type: | Vane-Type Hydraulic | Rotational Speed: | 500–5000 R/min |
| Flow Rate: | 7.0 L/min | Maximum Pressure: | 98 Bar |
| High Light: | Vane-Type Hydraulic Power Steering Oil Pump,7.0 L/min Flow Rate Hydraulic Steering Pump Assembly,98 bar Maximum Pressure Steering Pump |
||
Product Description
ISUZU TFR 4JA1 4JB1 Power Steering Oil Pump 8-97129593-5 OEM Fit
Power Steering Oil Pump 8-97129593-5 8971295935 for ISUZU TFR TFS D-MAX 4JA1 4JB1 4ZD1 — Verified OEM Fit Hydraulic Steering Pump Assembly
Product Overview
This Power Steering Oil Pump with OEM numbers 8-97129593-5 and 8971295935 is a verified direct-fit replacement for ISUZU TFR / TFS / D-MAX / Pickup / Trooper / Rodeo / OPEL Frontera / Vauxhall Brava vehicles equipped with the 4JA1 / 4JB1 / 4ZD1 / 4ZE1 engines. This hydraulic steering pump is a critical component of the power steering system, responsible for generating hydraulic pressure that assists the driver in turning the steering wheel, ensuring smooth and effortless steering control under all driving conditions.
Working Principle
The power steering oil pump is a belt-driven hydraulic pump that draws power steering fluid from the reservoir and pressurizes it to the required operating pressure. The pressurized fluid is delivered to the steering gear box (or rack), where it assists the driver's steering input by applying hydraulic force to the steering mechanism. The 8-97129593-5 pump is a vane-type hydraulic pump with a precision-machined rotor and vanes that generate flow. The pump incorporates an internal pressure relief valve to prevent over-pressurization and a flow control valve to maintain consistent steering assist across the engine speed range.
Failure Symptoms
- Heavy or stiff steering — insufficient hydraulic pressure from a worn pump makes steering difficult, especially at low speeds
- Whining or groaning noise when steering — a worn pump bearing or internal damage produces noise during steering operation
- Steering fluid leakage at the pump — visible fluid traces on the pump body, hoses, or under the vehicle indicate seal failure
- Steering assist loss at idle or low RPM — a weak pump cannot maintain adequate pressure at low engine speeds
- Steering vibration or pulsation — internal pump wear or air in the system causes steering wheel vibration
- Fluid contamination with metal particles — internal pump wear produces metal debris that contaminates the steering fluid
Critical Inspection Note: ISUZU service manuals require that the power steering system be flushed and the fluid replaced whenever the pump is replaced. Always use the specified power steering fluid and bleed the system thoroughly to remove air. Inspect the drive belt for wear and correct tension.
Technical Specifications
| Verification Item | Data / Standard | Source / Method |
|---|---|---|
| Part Number (Short) | 8-97129593-5 | ISUZU OEM Parts Database |
| Part Number (Long) | 8971295935 | ISUZU OEM Parts Database |
| Part Name | POWER STEERING OIL PUMP | ISUZU EPC |
| Vehicle Models | ISUZU TFR / TFS / D-MAX / Pickup / Trooper / Rodeo | ISUZU application catalog |
| Engine Compatibility | 4JA1 / 4JB1 / 4ZD1 / 4ZE1 | ISUZU application catalog |
| Pump Type | Vane-Type Hydraulic | Product specification |
| Flow Rate | 7.0 L/min | JAR Parts specification |
| Nominal Displacement | 7.2 ml/r | JAR Parts specification |
| Maximum Pressure | 98 bar | JAR Parts specification |
| Rotational Speed Range | 500–5000 r/min | JAR Parts specification |
| Mounting Position | Engine Side, Belt-Driven | Product specification |
| Fluid Type | ATF / Power Steering Fluid | ISUZU workshop manual |
| Net Weight (per unit) | Approx. 2.0 kg | Product specification |
| Certification | ISO/TS 16949 | Third-party system audit |
Product Details
Part Number
8-97129593-5
Product Name
Power Steering Oil Pump
Car Model
TFR
Engine Model
4JA1 4JB1
Condition
100% Brand New
Origin
China Mainland
Main Market
Middle East, Asia, Africa, South America, North America & Europe
Material
High-strength aluminum alloy & precision bearings
Installation
Direct OEM replacement
Quality Standard
OEM equivalent / ISO quality control
Vehicle & Engine Compatibility
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | TFR / TFS | TFR / TFS | 4JA1 / 4JB1 / 4ZD1 | 1988–2003 |
| ISUZU | D-MAX | TFR / TFS | 4JA1 / 4JB1 | 2002–2012 |
| ISUZU | Pickup | TF | 4JA1 / 4JB1 / 4ZD1 | 1988–2002 |
| ISUZU | Trooper / Bighorn | UBS | 4ZE1 | 1991–1998 |
| ISUZU | Rodeo | TF | 4ZE1 | 1988–2002 |
| OPEL | Frontera A / Sport | — | 2.8 TD / 3.1 TD | 1991–1998 |
| OPEL | Monterey A | — | 2.8 TD / 3.1 TD | 1991–1998 |
| Vauxhall | Brava Pickup | TF | 4JA1 / 4JB1 | 1988–2002 |
Important Fitment Notes:
- This power steering pump is designed for the 4JA1 / 4JB1 / 4ZD1 / 4ZE1 engine family. Confirm your specific engine model before ordering
- The 8-97129-593-5 is the -5 suffix version of the 8-97129-593 series. The -1, -4, -3, -2, -0 suffixes are interchangeable for the same application
- The 8-97331-940-0 / 8-97331-940-1 are related OEM numbers for the same pump assembly. Verify your exact OEM number against your original component
- The FACAR 825020 is an equivalent remanufactured pump for OPEL Frontera / Monterey applications
- For right-hand drive (RHD) vehicles, verify clearance and hose routing. Refer to the ISUZU workshop manual for the correct procedure
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| Vane-Type Hydraulic Design | Smooth, consistent steering assist across all engine speeds — verified by JAR Parts specification (7.0 L/min flow, 98 bar max pressure) |
| 7.2 ml/r Nominal Displacement | Optimal flow rate for ISUZU TFR/TFS steering systems — verified by JAR Parts specification |
| Precision-Machined Rotor & Vanes | Reliable hydraulic pressure generation with minimal internal leakage — verified by CMM dimensional inspection |
| Internal Pressure Relief Valve | Prevents over-pressurization and protects system components — verified by functional testing |
| Flow Control Valve | Maintains consistent steering assist across the engine speed range — verified by flow bench testing |
| OEM-Exact Fitment | Direct replacement for 8-97129593-5 / 8971295935 without modification — confirmed by dimensional inspection against OEM specifications |
| ISO/TS 16949 Quality System | Full traceability with material certificates and batch inspection reports — third-party certified |
Quality Control & Verification
| QC Item | Verification Method / Standard |
|---|---|
| Pump Housing Dimensions | CMM, 100% inspection |
| Rotor & Vane Dimensions | CMM, 100% inspection |
| Flow Rate (7.0 L/min) | Flow bench test, 100% inspection |
| Maximum Pressure (98 bar) | Pressure test, 100% inspection |
| Internal Leakage | Leakage test, 100% inspection |
| Relief Valve Function | Functional test, 100% inspection |
| Shaft Rotation Torque | Torque tester, 100% inspection |
| Bearing Noise | Noise test, 100% inspection |
| Surface Finish | Visual inspection — no cracks, no porosity, no burrs |
| Port Thread Inspection | Thread gauge, 100% inspection |
| Batch Traceability | Material lot number + production date |
| Packaging Protection | Anti-rust oil + VCI film + carton |
RELATED PRODUCTS
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts Part Number: 5873102680 5-87310268-0 Product Name: Engine Block Car Model: ISUZU 100P Engine Model: ISUZU 4JB1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia...
Engine Overhaul Gasket Kit 5-87811868-1 5878118681 For ISUZU NPR 4HF1
High-quality Engine Overhaul Gasket Kit 5-87811868-1 for ISUZU NPR trucks equipped with 4HF1 engine. Complete OEM-equivalent gasket set designed for full engine overhaul and long-term sealing performance. Part Number: 5-87811868-1 5878118681 Product Name: Engine Overhaul Gasket Kit Car Model: ISUZU ...
Cylinder Liner Kit 5-87810143-1 5878101431 For ISUZU FSR 6BF1
High-quality Cylinder Liner Kit 5-87810143-1 for ISUZU FSR trucks equipped with the 6BF1 engine. OEM-equivalent replacement designed to restore engine performance and extend service life. Part Number: 5-87810143-1 5878101431 Product Name: Cylinder Liner Kit Car Model: ISUZU FSR Engine Model: ISUZU ...
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1 Part Number: 8970211711 8-97021171-1 Product Name: Water Pump Assembly Car Model: ISUZU NPR59 Engine Model: ISUZU 4BC2 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle ...
