


🔧 Seal the deal with confidence — reliability that keeps your ride smooth!
The National 711103 Automatic Transmission Extension Housing Seal features a spring-loaded multi-lip design that ensures superior sealing performance. It operates efficiently across a broad temperature range (-20°F to 300°F) and resists swelling in hydrocarbon fluids and EP lubricants. Manufactured by DRiV Incorporated, this compact, lightweight seal is engineered for durability and trusted by professionals for over 75 years.
| Manufacturer | DRiV Incorporated | 
| Brand | National | 
| Model | Automatic Transmission Extension Housing Seal | 
| Item Weight | 0.8 ounces | 
| Product Dimensions | 0.8 x 2.8 x 2.8 inches | 
| Country of Origin | Taiwan | 
| Item model number | 711103 | 
| Exterior | Machined | 
| Manufacturer Part Number | 711103 | 
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