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NationalPart #: 4740
National 4740 Wheel Seal - Front Inner
148 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, GMC, and Dodge, Express 2500, Express 3500, Savana 2500, Savana 3500, C2500, C3500, C1500, C1500 Suburban, C2500 Suburban, P30, Ram 2500, Ram 3500, P3500, G30, G3500, G20, and G2500
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National 4740 Wheel Seal Overview
The National 4740 wheel seal is engineered for reliable sealing performance in driveline and axle applications. Designed specifically for select Chevrolet, Dodge, and GMC trucks and vans, this oil seal helps maintain proper lubrication and prevent contamination.
- Inside diameter: 2.180 inches (55.370 mm)
- Outside diameter: 3.004 inches (76.300 mm)
- Width: 0.250 inches (6.350 mm)
- Material: Durable nitrile rubber for resistance to oil and wear
- Redicoat coating for enhanced corrosion protection
- Series 4000, Type 282 oil seal design
- Housing bore: 2.999 inches (76.170 mm)
Detailed Product Description
The National 4740 wheel seal is part of the Series 4000 line, known for its precision fit and durable construction. Made from nitrile material, this oil seal offers excellent resistance to petroleum-based fluids and high temperatures commonly found in automotive driveline systems. The Redicoat treatment provides additional protection against corrosion, extending the service life of the seal. With an inside diameter of 2.180 inches and an outside diameter of 3.004 inches, this seal is designed to fit tightly within the housing bore of 2.999 inches, ensuring a secure barrier against leaks.
Compatible Vehicles and Applications
This wheel seal is compatible with a range of Chevrolet, Dodge, and GMC models, including:
- Chevrolet C1500, C1500 Suburban, C2500, C2500 Suburban, C3500
- Dodge Ram 2500, Ram 3500
- GMC Express 2500, Express 3500, G20, G30, P30, P3500, Savana 2500, Savana 3500
It is designed to maintain axle integrity and prevent oil leaks in these specific vehicles, making it a suitable replacement part for routine maintenance or repair.
Common Issues Addressed by National 4740 Wheel Seal
- Prevents axle oil leaks that can lead to driveline damage
- Protects bearings and other components from dirt and moisture intrusion
- Reduces risk of premature wear due to lubricant contamination
- Maintains proper lubrication for smooth wheel and axle operation
- Helps avoid costly repairs related to seal failure
Installation Notes and Tips
- Ensure the housing bore and shaft are clean and free of debris before installation
- Use appropriate tools to press the seal evenly into the housing bore without distortion
- Verify the seal orientation matches the original part to maintain proper sealing function
- Check shaft surface for wear or damage that could compromise the seal
- Apply a light coating of compatible lubricant on the seal lip before installation
Quality Assurance and Warranty
National wheel seals are manufactured to meet industry standards for durability and performance. The 4740 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability.
| Brand | National |
|---|---|
| Part Number | 4740 |
| Housing Bore (Inch) | 2.999 |
| Housing Bore (MM) | 76.170 |
| Inside Diameter | 2.180 |
| Inside Diameter | 55.370 |
| Material | Nitrile |
| Outside Diameter | 3.004 |
| Outside Diameter | 76.300 |
| Outside Diameter (Inch) | 3.004 |
| Outside Diameter (mm) | 76.300 |
| Part Description | Oil Seal |
| Redicoat | Yes |
| Series | 4000 |
| Shaft (Inch) | 2.180 |
| Shaft (MM) | 55.370 |
| Type | 282 |
| Unit of Dimension | Inch |
| Width (Inch) | 0.250 |
| Width (mm) | 6.350 |
This part fits 148 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2002 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 2002 | Chevrolet | Express 3500 | Front Inner | ||
| 2002 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 2002 | GMC | Savana 3500 | Front Inner | ||
| 2001 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 2001 | Chevrolet | Express 3500 | Front Inner | ||
| 2001 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 2001 | GMC | Savana 3500 | Front Inner | ||
| 2000 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 2000 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 2000 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 2000 | Chevrolet | Express 3500 | Front Inner | ||
| 2000 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 2000 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 2000 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 2000 | GMC | Savana 3500 | Front Inner | ||
| 1999 | Chevrolet | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | Chevrolet | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1999 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1999 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1999 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | Chevrolet | Express 3500 | Front Inner | ||
| 1999 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1999 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1999 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1999 | GMC | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | GMC | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1999 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1999 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1999 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1999 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 1999 | GMC | Savana 3500 | Front Inner | ||
| 1998 | Chevrolet | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | Chevrolet | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1998 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1998 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1998 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | Chevrolet | Express 3500 | Front Inner | ||
| 1998 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1998 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1998 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1998 | GMC | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | GMC | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1998 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1998 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1998 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1998 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 1998 | GMC | Savana 3500 | Front Inner | ||
| 1997 | Chevrolet | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | Chevrolet | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1997 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1997 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1997 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | Chevrolet | Express 3500 | Front Inner | ||
| 1997 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1997 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1997 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1997 | GMC | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | GMC | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1997 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1997 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1997 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1997 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 1997 | GMC | Savana 3500 | Front Inner | ||
| 1996 | Chevrolet | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | Chevrolet | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1996 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1996 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1996 | Chevrolet | Express 2500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | Chevrolet | Express 3500 | Front Inner | ||
| 1996 | Chevrolet | G30 | Front Inner | ||
| 1996 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1996 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1996 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1996 | GMC | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | GMC | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1996 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1996 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1996 | GMC | G3500 | Front Inner | ||
| 1996 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1996 | GMC | Savana 2500 | Front Inner | with Heavy Duty Brakes | |
| 1996 | GMC | Savana 3500 | Front Inner | ||
| 1995 | Chevrolet | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1995 | Chevrolet | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1995 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1995 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1995 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1995 | Chevrolet | G20 | Front Inner | with Heavy Duty Brakes | |
| 1995 | Chevrolet | G30 | Front Inner | ||
| 1995 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1995 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1995 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1995 | GMC | C1500 | Front Inner | with Heavy Duty Brakes | |
| 1995 | GMC | C1500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1995 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1995 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1995 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1995 | GMC | G2500 | Front Inner | with Heavy Duty Brakes | |
| 1995 | GMC | G3500 | Front Inner | ||
| 1995 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1994 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1994 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1994 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1994 | Chevrolet | G20 | Front Inner | with Heavy Duty Brakes | |
| 1994 | Chevrolet | G30 | Front Inner | ||
| 1994 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1994 | Dodge | Ram 2500 | RWD | Front Inner | |
| 1994 | Dodge | Ram 3500 | Front Inner | Single Rear Wheel | |
| 1994 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1994 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1994 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1994 | GMC | G2500 | Front Inner | with Heavy Duty Brakes | |
| 1994 | GMC | G3500 | Front Inner | ||
| 1994 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1993 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1993 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1993 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1993 | Chevrolet | G20 | Front Inner | with Heavy Duty Brakes | |
| 1993 | Chevrolet | G30 | Front Inner | ||
| 1993 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1993 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1993 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1993 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1993 | GMC | G2500 | Front Inner | with Heavy Duty Brakes | |
| 1993 | GMC | G3500 | Front Inner | ||
| 1993 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1992 | Chevrolet | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1992 | Chevrolet | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1992 | Chevrolet | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1992 | Chevrolet | G20 | Front Inner | with Heavy Duty Brakes | |
| 1992 | Chevrolet | G30 | Front Inner | ||
| 1992 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1992 | GMC | C2500 | Front Inner | with Heavy Duty Brakes | |
| 1992 | GMC | C2500 Suburban | Front Inner | with Heavy Duty Brakes | |
| 1992 | GMC | C3500 | Front Inner | Except 15000 (lb) Drive Axle | |
| 1992 | GMC | G2500 | Front Inner | with Heavy Duty Brakes | |
| 1992 | GMC | G3500 | Front Inner | ||
| 1992 | GMC | P3500 | Front Inner | with I-Beam Axle | |
| 1991 | Chevrolet | P30 | Front Inner | Except I-Beam Axle | |
| 1991 | GMC | P3500 | Front Inner | with I-Beam Axle |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
156516611565517221756290-268417.660084321769474052007661
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.