Engine Oil Feed Pipe 8-97228670-0 8972286700 for ISUZU NPR / NQR 4HG1 & 4HK1 — OEM Replacement Vacuum Pump Oil Supply Line
| OEM Part Number: | 8-97228670-0 / 8972286700 | Part Name: | Oil Feed Pipe / Oil Supply Line / Vacuum Pump Oil Pipe |
| Application: | Routes Engine Oil To The Vacuum Pump | Material: | High-Strength Steel / Metal Tubing |
| Vehicle Compatibility: | ISUZU NPR, NPR-HD, NRR, NQR, NQR71, NQR75 | Engine Compatibility: | ISUZU 4HG1, 4HE1, 4HK1 |
| Production Years: | 2001–2009 | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 12 Months | ||
| High Light: | ISUZU NPR NQR engine oil feed pipe,OEM replacement vacuum pump oil line,4HG1 4HK1 oil supply pipe |
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The Engine Oil Feed Pipe with OEM numbers 8-97228670-0 (also listed as 8972286700) is a verified OEM-grade direct replacement for ISUZU NPR, NQR, NRR, and NPR-HD series trucks. This specialized oil pipe is a critical component of the engine's lubrication system, responsible for routing pressurized engine oil to the vacuum pump.
- OEM Specification — Verified by ISUZU OEM part numbers 8-97228670-0, 8972286700
- Proven Durability — Engineered to withstand high-pressure engine oil and continuous thermal cycling — rated for 300,000+ km under normal operation
- Direct Replacement Fit — Designed for replacement in the factory location with no modifications required when matched correctly
- Broad Compatibility — Fits ISUZU NPR, NPR-HD, NRR, NQR models with 4HG1, 4HE1, 4HK1 engines
If your oil feed pipe is failing, you may experience one or more of the following symptoms:
- Visible Oil Leakage: Oil spots or puddles forming under the vehicle near the vacuum pump area
- Low Engine Oil Level: Unexplained drop in oil level between service intervals
- Vacuum Pump Failure: Insufficient oil supply to the vacuum pump can lead to reduced brake assist or complete pump failure
- Burning Oil Smell: Oil dripping onto hot exhaust components, producing a burning odor
- Engine Oil Pressure Warning: In severe cases, low oil pressure due to a significant leak can trigger the dashboard warning light
| Part Number | Product Name | Car Model | Engine Model |
|---|---|---|---|
| MK356641 MK-356641 | Engine Oil Feed Pipe | ISUZU NPR / NQR | ISUZU 4HG1 4HK1 |
| Condition | Origin | Main Market | Package |
| 100% Brand New | China Mainland | Middle East, Asia, Africa, South America, North America & Europe | Neutral Packing Or Make It As Requested |
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | N-Series | 4HG1, 4HE1, 4HK1 | 2001-2009 |
| ISUZU | NPR-HD | N-Series | 4HE1, 4HK1 | 2001-2009 |
| ISUZU | NRR | N-Series | 4HE1, 4HK1 | 2001-2009 |
| ISUZU | NQR | N-Series | 4HG1, 4HE1, 4HK1 | 2001-2009 |
| ISUZU | NQR71 | N-Series | 4HG1 | -- |
| ISUZU | NQR75 | N-Series | 4HG1 | -- |
| Engine Code | Displacement | Application |
|---|---|---|
| 4HG1 | 4.6L Diesel | NPR, NQR, NQR71, NQR75 |
| 4HE1 | 4.8L Diesel | NPR, NPR-HD, NRR, NQR |
| 4HK1 | 5.2L Diesel | NPR, NPR-HD, NRR, NQR |
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Specification — ISUZU Genuine Equivalent | Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers 8-97228670-0 and 8972286700 |
| Precision-Engineered Oil Routing | Routes engine oil to the vacuum pump circuit for reliable vacuum pump operation — verified by OEM design specifications |
| High-Strength Metal Construction | Withstands high-pressure engine oil and continuous thermal cycling — verified by OEM-grade manufacturing standards |
| Direct Replacement Fit | Engineered to replace bent, cracked, leaking, or restricted oil piping in the factory location — no modifications required when matched correctly |
| Critical Lubrication Component | Ensures proper oil supply to the vacuum pump, preventing premature pump failure and maintaining brake assist function |
| 100% New — No Core Charge | Guarantees zero wear, immediate oil flow, and full service life — no core deposit required |
Our manufacturing and inspection processes ensure every oil feed pipe meets or exceeds ISUZU OEM standards.
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify tube diameter, length, and fitting specifications match OE blueprint standards |
| Material Composition | High-strength steel analysis to verify pressure resistance and durability |
| Pressure Test | 100% pressure testing to guarantee zero oil leakage under operating conditions |
| Durability Cycle Test | 500+ hour thermal cycling and pressure cycling to verify long-term reliability |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
Pre-Installation Checklist:
- Allow the engine to cool completely before starting work
- Drain the engine oil or position a drain pan to catch oil spillage
- Clean the area around the oil feed pipe to prevent contamination
- Inspect the vacuum pump and connections for damage — replace if necessary
- Verify the pipe's OEM number against your original part before installation
Installation Guidelines (Reference ISUZU workshop manual):
- Safely raise the vehicle and support it on jack stands
- Locate the oil feed pipe connecting the engine block to the vacuum pump
- Remove the old pipe fittings and carefully remove the old pipe
- Clean the connection surfaces thoroughly
- CRITICAL: Install the new pipe with NEW sealing washers or O-rings
- Torque the fittings to manufacturer's specified torque settings (refer to ISUZU workshop manual)
- Refill with fresh engine oil if oil was drained
- Start the engine and check for oil leaks around the pipe connections
- Check the oil level after the engine reaches operating temperature
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months. Check for oil leaks, cracks, or damage to the pipe
- Replacement: Immediately if failure symptoms appear
- Packaging: Each oil feed pipe is securely packed in protective packaging to prevent shipping damage
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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