Premium-quality direct replacement fuel system component designed for Isuzu TFR54 light-duty pickups with 4JA1 or 4JB1 diesel engines and secondary fuel tanks.

• OE Quality: Manufactured to Isuzu specifications for perfect fit and accurate fuel level reading
• Precision Level Sensor: Provides reliable resistance sweep for accurate fuel gauge readings
• Corrosion-Resistant Construction: Suitable for long-term immersion in diesel fuel
• Direct Replacement: Simple drop-in installation with OE mounting and electrical connector
• Restores Gauge Accuracy: Eliminates false or erratic fuel level readings
• Cost-Effective: Affordable alternative to genuine OEM units

Isuzu Vehicle Models:

• ISUZU TFR54 (light-duty pickup, 4×2 / 4×4, with auxiliary tank)
• May also fit other Isuzu TFR/TFS models with sub tank - verify compatibility

Engine Specifications:

1. Safely lift and support the vehicle. Drain fuel from the sub tank
2. Access the sub fuel tank unit through access panel or by lowering the tank
3. Disconnect electrical connector and fuel lines (if equipped with transfer pump)
4. Remove the lock ring or mounting screws
5. Lift out the old unit, taking care not to damage the float arm
6. Compare new unit with old (tank depth, float length, connector)
7. Clean the tank opening and sealing surface
8. Install new gasket (if supplied) and insert the new unit
9. Secure with lock ring or screws. Tighten to specification
10. Reconnect fuel lines and electrical connector
11. Refill the sub tank and check for leaks
12. Test fuel gauge operation (fill main and sub tanks, verify readings)

• Electrical Test: Sensor resistance measured at empty, half, and full positions
• Float Arm Movement: Smooth operation verified throughout full travel
• Dimensional Inspection: Tank depth, flange diameter, and connector orientation verified
• Leak Test: Unit sealed to prevent fuel leakage
• Visual Inspection: 100% checked for defects
• Packaged Safely: Sealed in plastic bag, boxed with foam

• 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

For pricing, availability, or bulk purchase of the Sub Fuel Tank Unit 8-94318396-0, please contact our sales team for a competitive quote and expert technical support.