Oil Jet Oil Pipe 8-94469992-0 8944699920 For ISUZU TFR 4JA1 4JB1 Diesel Engine

The Oil Jet Oil Pipe (OEM Numbers: 8-94469992-0 / 8944699920) is a premium-quality, direct replacement engine component designed specifically for ISUZU TFR series vehicles equipped with 4JA1 and 4JB1 diesel engines.

Oil jet oil pipe directs pressurized engine oil to spray onto the underside of pistons, providing cooling and lubrication to prevent overheating and piston seizure in ISUZU 4JA1 and 4JB1 diesel engines.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• Precision-Formed Tubing: Accurate bends and mounting points match original pipe configuration for direct replacement
• Durable Steel Construction: High-quality steel resists corrosion, vibration, and oil pressure fatigue
• Ensures Proper Piston Cooling: Delivers correct oil flow to piston cooling jets to prevent overheating
• Prevents Piston Seizure: Proper oil jet function reduces thermal stress on pistons, preventing scuffing and seizure
• Maintains Oil Flow Integrity: Precision-formed tube ensures unrestricted oil flow to all jet nozzles
• Essential for Overhaul: Critical component to inspect and replace during engine rebuilds
• Direct Replacement: Simple bolt-on installation - matches original pipe routing and fittings
• Protects Engine Investment: Prevents costly piston and cylinder damage from inadequate cooling

This oil jet oil pipe is specifically designed for ISUZU light-duty trucks and industrial equipment. Common applications include:

• ISUZU TFR (Pickup / Utility Vehicle)
• ISUZU TF series (as applicable)
• ISUZU 4JA1 Engine Specifications:
  • 4-Cylinder, Inline Diesel
  • Displacement: 2.5L
  • Valvetrain: OHV
  • Application: Pickups, light trucks, and commercial vehicles
• ISUZU 4JB1 Engine Specifications:
  • 4-Cylinder, Inline Diesel
  • Displacement: 2.8L
  • Valvetrain: OHV
  • Application: Pickups, light trucks, and commercial vehicles
• Also compatible with various ISUZU models using the 4JA1 or 4JB1 engine with the same oil jet system configuration

1. Drain engine oil - Drain oil to prevent spills during component removal
2. Remove the oil pan - Remove the oil pan to access the oil jet system (location varies by engine)
3. Locate the oil jet pipes - Identify the oil delivery pipes and piston cooling jet nozzles
4. Remove the old pipe - Carefully disconnect and remove the old oil pipe; note the routing for reinstallation
5. Inspect oil jet nozzles - Check the nozzles for clogging, damage, or incorrect spray pattern
6. Clean oil passages - Ensure all oil galleries are clear of debris and sludge
7. Install the new pipe - Position the new oil pipe in the correct routing; connect to fittings
8. Torque fittings - Tighten all connections to manufacturer torque specifications
9. Check pipe clearance - Ensure the pipe does not contact moving parts (crankshaft, connecting rods)
10. Reinstall oil pan - Install a new oil pan gasket and reinstall the pan with proper torque
11. Refill with engine oil - Fill with correct grade and quantity of engine oil
12. Start and check - Start the engine; check for oil pressure warning light and inspect for leaks

• Material Verification: Confirms steel tubing quality meets ISUZU strength and corrosion resistance specifications
• Dimensional Inspection: Pipe routing, bend angles, and fitting locations verified against OE specifications
• Pressure Testing: Sample tested to ensure integrity under operating oil pressure
• Visual Inspection: 100% checked for cracks, kinks, corrosion, or manufacturing defects
• Packaged Safely: Protected and packaged to prevent damage during transit

• 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 Oil Jet Oil Pipe 8-94469992-0 8944699920 For ISUZU TFR 4JA1 4JB1 Diesel Engine, please contact our sales team for a competitive quote and expert technical support.