Engine Oil Pan Gasket 8-97146148-2 8971461482 For ISUZU NPR66/ NQR75 4HG1/4HG1-T

✅ Product Description

The Engine Oil Pan Gasket with OEM numbers 8-97146148-2 (also listed as 8971461482) is a verified OEM-grade direct replacement for ISUZU 4HG1 diesel engines, commonly found in NPR66 and NQR series trucks-. As a critical component of the engine's lubrication system, this gasket seals the connection between the oil pan and the engine block, preventing oil leaks and maintaining proper oil pressure-. Manufactured to OEM specifications, it ensures a precise fit and reliable sealing performance for commercial truck applications.

⚠️ Important Fitment Note: The 8-97146148-2 part number is the thick type oil pan gasket, suitable for specific engine variants--19. A thin type variant exists under part number 8-97146148-1 / 8971461481-19. Always verify your vehicle's requirements before ordering.

• ✅ OEM Specification — Verified by ISUZU OEM part numbers 8-97146148-2 and 8971461482-.

• ✅ Precision Fitment — Engineered specifically for ISUZU 4HG1, 4HG1-T, and 4HF1 diesel engines--19.

• ✅ Proven Durability — Constructed from high-quality, oil-resistant materials designed to withstand heavy-duty commercial operation.

• ✅ Broad Compatibility — Fits ISUZU NPR66, NQR71, NQR75, NPR75 and compatible N-Series models--20.

[Failure Symptoms]
If your oil pan gasket is failing, you may experience one or more of the following symptoms:

1. Visible Oil Leakage: Oil spots or puddles forming under the vehicle — the most common sign of a degraded oil pan gasket-.

2. Low Engine Oil Level: Unexplained drop in oil level between service intervals.

3. Burning Oil Smell: Oil dripping onto hot exhaust components, producing a burning odor.

4. Oil Residue on Engine Block: Visible oil stains or wetness around the oil pan area-.

5. Engine Oil Pressure Warning: In severe cases, low oil pressure due to significant oil loss can trigger the dashboard warning light.

⚠️ A failing oil pan gasket can lead to progressive oil loss, engine damage, and potential breakdown — prompt replacement is essential to maintain engine lubrication integrity.

✅ Vehicle & Engine Compatibility

Primary Applications:

⚠️ Important:

• This gasket is designed for ISUZU 4HG1, 4HG1-T, and 4HF1 diesel engines.

• The thick type gasket is specifically used in NQR71, NQR75 applications--19.

• A thin type variant exists — verify your vehicle's requirements before ordering-19.

• Compatible with ISUZU N-Series trucks across multiple chassis and engine variants.

• Please verify your vehicle's chassis code, production year, and engine code before ordering.

✅ Features & Benefits

✅ Quality Control & Verification

Our manufacturing and inspection processes ensure every oil pan gasket meets or exceeds ISUZU OEM standards.

✅ Installation & Maintenance Recommendations

⚠️ IMPORTANT: Professional Installation Recommended

• Pre-Installation Checklist:

  • Allow the engine to cool completely before starting work.

  • Drain the engine oil completely before removing the oil pan.

  • CRITICAL: Verify your vehicle requires the thick type gasket — the thin type variant is 8-97146148-1 / 8971461481-19.

  • Clean the oil pan and engine block sealing surfaces thoroughly — any debris can cause premature gasket failure.

  • Inspect the oil pan for damage, warpage, or corrosion — replace if necessary.

Installation Guidelines (Reference ISUZU workshop manual):

1. Safely raise the vehicle and support it on jack stands.

2. Drain the engine oil and remove the oil filter if necessary.

3. Remove the oil pan mounting bolts in the correct sequence.

4. Carefully remove the oil pan and old gasket.

5. Clean the oil pan and engine block sealing surfaces with appropriate solvent.

6. Ensure both surfaces are completely dry and free of oil residue.

7. CRITICAL: Position the new gasket correctly on the oil pan or engine block.

8. Install the oil pan and hand-tighten the mounting bolts.

9. CRITICAL: Torque the mounting bolts in the correct sequence to the manufacturer's specified torque settings (refer to ISUZU workshop manual).

10. Refill with fresh engine oil to the correct level.

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months, or during routine oil changes. Check for visible oil leaks around the oil pan area.

• Replacement: Immediately if oil leaks are detected or if the gasket shows signs of deterioration.

• Note: This gasket is a critical sealing component — regular inspection is essential for engine reliability.

✅ Packaging & Supply

• Packaging: Each oil pan gasket is securely packed in protective packaging to prevent shipping damage.

• Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners.