OEM Common Rail Fuel Pressure Limiter 8-98138695-0 8981386950 095420-0560 For ISUZU NPR75 NQR90 NMR85 FSR90 FVR34 4HK1 6HK1 4JJ1 — Denso Pressure Relief Valve
Price:
Negotiable
MOQ:
20 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
OEM Common Rail Fuel Pressure Limiter 8-98138695-0 8981386950 095420-0560 For ISUZU NPR75 NQR90 NMR85 FSR90 FVR34 4HK1 6HK1 4JJ1 — Denso Pressure Relief Valve
Product Overview
The Common Rail Fuel Pressure Limiter (Pressure Relief Valve) with OEM numbers 8-98138695-0 (also listed as 8981386950, 8-98138-695-0) is a verified OEM-grade direct replacement for a wide range of ISUZU diesel engines, including the 4HK1, 6HK1, and 4JJ1.
Manufactured to Denso OEM specifications (Denso model 095420-0560), this mechanical pressure relief valve is a critical safety component of the common rail fuel system. It is mounted directly on the fuel rail and acts as a mechanical safety valve, opening when system pressure exceeds a predetermined threshold to release excess fuel back to the return line, thereby protecting the injectors, high-pressure pump, and fuel rail from over-pressure damage.
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OEM Specification — Verified by ISUZU OEM part numbers 8-98138695-0, 8981386950, 8-98138-695-0, and Denso model 095420-0560.
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Precision Engineered — Weight verified at 125.5 g per unit, manufactured with CE and IATF 16949 certification.
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Proven Durability — Constructed with heavy-duty zinc-plated steel and integrated spring mechanism for consistent pressure regulation.
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Verified OEM Fitment — Confirmed for ISUZU NPR75, NQR90, NMR85, FSR90, FVR34 with 4HK1, 6HK1, 4JJ1 engines, Euro 5 emission models.
| Part Number | 8-98138695-0 8981386950 095420-0560 |
|---|---|
| Product Name | Common Rail Fuel Pressure Limiter |
| Car Model | ISUZU NPR75 NQR90 NMR85 FSR90 FVR34 |
| Engine Model | ISUZU 4HK1 6HK1 4JJ1 |
| Condition | 100% Brand New |
Failure Symptoms
If your fuel pressure limiter is failing, you may experience one or more of the following symptoms:
- Hard Starting / No-Start: The pressure limiter leaks internally and prevents the rail from building sufficient pressure for injection.
- Engine Stalling or Hesitation Under Load: Irregular fuel pressure regulation causes the engine to stall or hesitate during acceleration.
- Excessive Exhaust Smoke: Black smoke (over-fueling) or white smoke (under-fueling) due to incorrect rail pressure.
- Reduced Power or Fuel Efficiency: The ECU cannot maintain optimal rail pressure, reducing combustion efficiency.
- Fuel Leakage or Pressure Fluctuations: Visible fuel seepage from the limiter body or erratic rail pressure readings.
- Diagnostic Trouble Codes (DTCs): Codes such as P0087 (Rail Pressure Too Low), P0088 (Rail Pressure Too High).
⚠️ A failing pressure limiter can lead to progressive power loss, engine stalling, and costly damage to the high-pressure fuel pump and injectors — prompt replacement with a quality OEM-specification limiter is essential to maintain fuel system integrity and engine reliability.
Vehicle & Engine Compatibility
⚠️ CRITICAL: This pressure limiter is designed for ISUZU Euro 5 diesel engines. Verify your engine code and chassis code before ordering.
| Brand | Model | Chassis / Series | Engine | Emission | Years |
|---|---|---|---|---|---|
| ISUZU | NPR75 | N-Series | 4HK1 5.2L | Euro 5 | 2009 onwards |
| ISUZU | NPR6SN | N-Series | 4HK1 5.2L | Euro 5 | 2009 onwards |
| ISUZU | NQR90 | N-Series | 4HK1 5.2L | Euro 5 | 2009 onwards |
| ISUZU | NMR85 | N-Series | 4JJ1 3.0L | Euro 5 | 2010 onwards |
Cross-Reference Part Numbers
| Brand | Part Number |
|---|---|
| Denso | 095420-0560, 095420-0560, 0-95420056-0, 09542-00560 |
| ISUZU | 8-98138695-0, 8981386950, 8-98138-695-0, 8982492330, 8981787060 |
| Aftermarket | IRL1007 (Euro4x4parts) |
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Specification — Denso Genuine Equivalent | Guarantees factory-fit quality and performance — verified by ISUZU OEM part number 8-98138695-0 and Denso model 095420-0560. |
| Precision Pressure Relief Design | Opens at factory-set pressure threshold to release excess fuel, protecting fuel system components from over-pressure damage. |
| Heavy-Duty Zinc-Plated Steel Construction | Withstands extreme fuel pressures and continuous thermal cycling without degradation. |
| 125.5 g Lightweight Design | Compact and lightweight for easy installation without adding unnecessary weight. |
| Integrated Spring Mechanism | Provides consistent, reliable pressure regulation across full operating range. |
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify all mounting dimensions match OE blueprint specifications. |
| Cracking Pressure Test | 100% bench testing to verify valve opens at specified pressure threshold. |
| Leakage Test | 100% high-pressure leak test to guarantee zero internal/external fuel leakage. |
| Flow Rate Test | Dynamic flow testing to verify relief flow volume meets OEM specifications. |
| Material Composition | Heavy-duty zinc-plated steel analysis to verify structural integrity. |
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Highly Recommended
Pressure limiter replacement requires depressurization of the fuel system, extreme cleanliness, and expert knowledge of common rail systems.
Pressure limiter replacement requires depressurization of the fuel system, extreme cleanliness, and expert knowledge of common rail systems.
Pre-Installation Checklist:
- Depressurize the fuel system before starting work
- Disconnect the negative battery terminal
- Clean the area around the pressure limiter and fuel rail to prevent contamination
- Use clean, high-quality fuel and replace the fuel filter simultaneously
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months
- Fuel Filter Replacement: Every 20,000-30,000 km
- Replacement: Recommended at 150,000-200,000 km or immediately if failure symptoms appear
Packaging & Supply
- Packaging: Neutral box, color box, or customer brand package
- Pack Quantity: 1 PC
- Net Weight: Approx. 125.5 g
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James