National 1987 Manual Transmission Output Shaft Seal

Overview of National 1987 Manual Transmission Output Shaft Seal

The National 1987 manual transmission output shaft seal is engineered to provide reliable sealing performance for a variety of vehicles including Toyota Camry, Chevrolet S10, and Lexus HS250h. Designed with durable polyacrylate material, this oil seal helps maintain transmission integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.378 inches (35.000 mm)
• Outside diameter: 1.937 inches (49.200 mm)
• Thickness: 0.236 inches (6.000 mm)
• Sealing material: Polyacrylate for enhanced durability
• Compatible with multiple makes and models including Toyota, Chevrolet, Lexus, and more

Technical Specifications and Material Details

The National 1987 output shaft seal features a precise inside diameter of 1.378 inches (35 mm) and an outside diameter of 1.937 inches (49.2 mm), ensuring a secure fit within the transmission housing bore of approximately 1.929 inches (49 mm). The seal thickness of 0.236 inches (6 mm) provides adequate sealing surface to prevent oil leakage. Constructed from polyacrylate, the seal offers resistance to heat, wear, and transmission fluids, making it suitable for manual transmissions in vehicles such as the Toyota Corolla, Pontiac Sunbird, and GMC S15 Jimmy.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with a wide range of vehicles, including but not limited to:

• Toyota Camry, Corolla, MR2, RAV4, Prius, and Solara
• Chevrolet S10, S10 Blazer, Nova, and Pickup
• Lexus HS250h and IS series
• GMC S15 and Jimmy models
• Geo Prizm and Chevrolet Chevette

Part number 1987 is designed specifically for manual transmission output shafts requiring a 1.378 inch (35 mm) shaft diameter and fits housing bores around 1.929 inches (49 mm).

Common Issues Addressed by the National 1987 Seal

• Prevents transmission fluid leaks from the output shaft area
• Reduces contamination ingress that can damage transmission components
• Maintains proper lubrication within the manual transmission system
• Helps avoid premature wear of transmission bearings and gears
• Ensures consistent transmission performance and longevity

Installation Notes and Tips

• Ensure the transmission output shaft and housing bore 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 diameter and housing bore measurements to confirm compatibility with part number 1987
• Inspect the seal after installation for any signs of damage or misalignment

Quality Assurance and Warranty Information

National manufactures the 1987 manual transmission output shaft seal to meet industry standards for durability and performance. The polyacrylate sealing material is selected for its resistance to heat and transmission fluids, ensuring reliable operation under normal driving conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product quality.