The Front Oil Seal Crankshaft for Isuzu 4BD1 and 4BD2 engines is a precision-engineered component that prevents engine oil from leaking around the crankshaft pulley area. Built from high-quality rubber and metal materials, this seal can withstand high rotational speeds, pressure, and temperature — providing durable, long-term protection against oil loss.
This seal is designed to OEM specifications, guaranteeing exact fitment and optimal performance for trucks, excavators, and industrial engines powered by Isuzu’s 4BD1 and 4BD2 engines. Whether you’re performing regular maintenance or a full engine rebuild, this front crankshaft oil seal ensures reliable performance and leak-free operation.
⚙️ Key Features:
-
Designed for Isuzu 4BD1 / 4BD2 diesel engines
-
Prevents oil leakage from the crankshaft’s front area
-
Made with high-quality, heat-resistant rubber for durability
-
Ensures long service life and stable crankshaft rotation
-
OEM-quality precision fit
-
Resistant to engine oil, heat, and friction
-
Easy installation
🚜 Compatible Applications:
-
Engine Models: Isuzu 4BD1, Isuzu 4BD2
-
Applications:
-
Isuzu NPR / NQR trucks
-
Hitachi, Kobelco, and Sumitomo excavators
-
Industrial and agricultural machinery with 4BD-series engines
-
FREQUENTLY ASKED QUESTIONS (FAQ)
What is the function of the front crankshaft oil seal?
It prevents engine oil from leaking out where the crankshaft exits the engine block at the front, maintaining proper oil pressure and engine cleanliness.
Is this oil seal compatible with both 4BD1 and 4BD2 engines?
Yes, it is specifically designed for both Isuzu 4BD1 and 4BD2 diesel engines, ensuring a precise OEM fit.
What materials are used in this oil seal?
The seal is made of high-quality synthetic rubber and metal reinforcement to resist oil, heat, and pressure for long-term durability.
When should I replace the front oil seal?
Replace it if you notice oil leaks near the crank pulley area or during a crankshaft or timing cover service.
Can I install the front oil seal myself?
Yes, but proper installation tools are recommended to ensure the seal seats evenly and prevents future leaks.
Front Oil Seal crankshaft | Isuzu 4BD1 / 4BD2 Engine
OE Replacement: Not Available
Fits Following: Isuzu NPR NQR / 4BD1 / 4BD2 3.9L / 6BD1 5.8L
Year: 1987-1998
