Radiator Drain Plug 8-94321236-0 8943212360 For ISUZU NKR 4JB1 4JG2 4BE1 4HF1

Radiator drain plug seals the drain port at the bottom of the radiator, allowing coolant to be drained during service while preventing coolant leaks during normal operation in ISUZU trucks.

The Radiator Drain Plug (OEM Numbers: 8-94321236-0 / 8943212360) is a premium-quality, direct replacement cooling system component designed specifically for ISUZU NKR series trucks equipped with 4JB1, 4JG2, 4BE1, 4HF1, and 4ZA1 diesel engines. This radiator drain plug - also known as a radiator drain cock, coolant drain plug, or drain valve - is installed at the bottom of the radiator. It provides a secure, leak-proof seal during normal vehicle operation while allowing easy draining of coolant during maintenance, flushing, or repair procedures. It also serves as a bleed point for removing air from the cooling system.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function.
• Leak-Proof Seal: Precision-machined thread and sealing surface ensure a tight, leak-free seal.
• Durable Construction: High-quality material withstands hot coolant, antifreeze, pressure, and temperature extremes.
• Easy Maintenance: Allows quick and clean draining of coolant during service or repair.
• Corrosion-Resistant: Resists corrosion from coolant chemicals and environmental exposure.
• Restores Cooling System Integrity: Eliminates coolant seepage caused by a worn or damaged drain plug.
• Direct Replacement: Matches OE thread size and sealing configuration for simple installation.
• Long Service Life: Engineered for commercial truck applications and extended service intervals.
• Essential Cooling System Component: Critical for maintaining proper coolant levels and preventing overheating.
• Cost-Effective Repair: Affordable replacement that prevents costly coolant loss and engine damage.

This radiator drain plug is specifically designed for ISUZU light-duty trucks and commercial vehicles.

• ISUZU NKR (Light-Duty Trucks)
• ISUZU NPR, NHR, ELF, TFR series (as applicable)

• ISUZU 4JB1 - 2.8L Inline-4 Diesel
• ISUZU 4JG2 - 3.1L Inline-4 Diesel
• ISUZU 4BE1 - 3.6L Inline-4 Diesel
• ISUZU 4HF1 - 4.3L Inline-4 Diesel
• ISUZU 4ZA1 - Diesel Engine

Professional mechanic or DIY installation recommended:

1. Ensure engine is cool - Never remove the radiator drain plug when the engine is hot to avoid burns from hot coolant.
2. Position a drain pan - Place a suitable container beneath the radiator drain port to catch used coolant.
3. Remove the old drain plug - Carefully unscrew the old drain plug counterclockwise; allow coolant to drain completely.
4. Inspect the drain port - Check the radiator drain port threads for damage or corrosion; clean if necessary.
5. Clean the new plug - Ensure the new drain plug and sealing washer/O-ring are clean and free of debris.
6. Install the new drain plug - Thread the new plug into the drain port by hand; ensure it seats properly.
7. Tighten the plug - Tighten the plug snugly by hand or with a wrench; do not over-tighten.
8. Refill with coolant - Fill the cooling system with the correct coolant mixture (50/50 antifreeze/water or as specified).
9. Bleed the cooling system - Start the engine and bleed air from the system per manufacturer procedure.
10. Check for leaks - Inspect the drain plug area for coolant leakage.
11. Check coolant level - After the engine cools, re-check the coolant level and top up if necessary.
12. Dispose of old coolant - Dispose of used coolant in accordance with local environmental regulations.

• Material Verification: Confirms plug material meets ISUZU coolant resistance, temperature, and durability specifications.
• Dimensional Inspection: Thread size, length, and sealing surface dimensions verified within OEM tolerances.
• Thread Inspection: Thread pitch and form checked for proper fit.
• Leak Testing: Sample tested for leak-proof integrity under operating coolant pressure.
• Visual Inspection: 100% checked for cracks, thread damage, 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