OEM Fit Fuel Tank Sub Unit for ISUZU 100P 600P NKR5 with 4JB1 Engine Compatibility and ISO/TS 16949 Certification
| OEM Part Number: | 8-94316192-0 / 8943161920 | Assembly Components: | Fuel Pump + Fuel Level Sensor + Fuel Filter |
| Engine Compatibility: | 4JB1 (2.8L, 4-cylinder, OHV, DI) | Material: | Steel / Plastic / Brass |
| Position: | Inside Fuel Tank | Vehicle Models: | ISUZU 100P / 600P / NKR5 |
| High Light: | OEM Fit Fuel Tank Sub Unit,4JB1 Engine Compatibility Fuel Tank Sender Unit,ISO/TS 16949 Certified Fuel Pump Assembly |
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The Fuel Tank Sub Unit with OEM numbers 8-94316192-0 and 8943161920 is a verified direct-fit replacement for ISUZU 100P / 600P / NKR5 light trucks equipped with the 4JB1 diesel engine. This critical fuel delivery component houses the fuel pump, fuel level sensor, and fuel filter, responsible for delivering fuel from the tank to the engine at required pressure and providing accurate fuel level information.
The fuel tank sub unit is an assembly installed inside the fuel tank that integrates the fuel pump, fuel level sensor, fuel filter, and in some applications a fuel pressure regulator. The electric fuel pump draws diesel from the tank and delivers it under pressure to the engine's fuel injection system, while the fuel level sensor converts float position into electrical signals for the dashboard fuel gauge.
- Engine hard starting or no-start — failed fuel pump cannot deliver sufficient fuel pressure
- Fuel gauge reading incorrect or inoperative — faulty fuel level sensor causes erratic readings
- Loss of power under load — insufficient fuel delivery during acceleration or hill climbing
- Fuel leakage at the tank unit — cracked housing or deteriorated seal allows diesel seepage
- Fuel filter warning light — indicates restricted fuel flow through integrated filter
| Part Number (Short) | 8-94316192-0 |
| Part Number (Long) | 8943161920 |
| Vehicle Models | ISUZU 100P / 600P / NKR5 |
| Engine Compatibility | 4JB1 (2.8L, 4-cylinder, OHV, DI) |
| Assembly Components | Fuel pump, fuel level sensor, fuel filter, mounting flange |
| Material | Steel tank flange, plastic housing, brass terminals |
| Warranty | 12 Months |
| Certification | ISO/TS 16949 |
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | ELF 100P | NKR5 | 4JB1 | 1990s–2000s |
| ISUZU | ELF 600P | NKR5 | 4JB1 | 1990s–2000s |
| ISUZU | NKR5 | NKR5 | 4JB1 | 1990s–2000s |
| ISUZU | NKR55 | NKR55 | 4JB1 | 1986–2007 |
| ISUZU | NPR | NPR | 4JB1 | 1986–2007 |
| QC Item | Verification Method |
|---|---|
| Mounting Flange Dimensions | CMM, 100% inspection |
| Fuel Pump Flow Rate | Flow bench test, 100% inspection |
| Fuel Level Sensor Resistance | Ohmmeter, 100% inspection |
| Electrical Connector Pinout | Circuit tester, 100% inspection |
| Fuel Leak Test | Pressure decay test, 100% inspection |
IMPORTANT: Fuel system service must be performed by a qualified technician. Always disconnect battery negative terminal and relieve fuel system pressure.
- Preparation: Disconnect battery and relieve fuel system pressure
- Access: Remove rear seat/access panel or lower fuel tank
- Disconnection: Disconnect electrical connector and fuel lines
- Removal: Remove retaining ring or mounting bolts
- Inspection: Inspect tank interior for contamination
- Installation: Install new unit with new gasket
- Reconnection: Reconnect fuel lines and electrical connector
- Final Check: Check for leaks and verify fuel gauge operation
- Every 10,000 km: Check for fuel leaks and verify fuel gauge operation
- Every 40,000–50,000 km: Replace fuel filter and inspect tank unit
- When fuel gauge malfunctions: Test fuel level sensor resistance
- When hard starting occurs: Test fuel pump pressure and flow
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