SKF 18658 Manual Transmission Seal - Rear or Rear Upper

Reliable Manual Transmission Seal for Chevrolet, Ford, and Pontiac

The SKF 18658 manual transmission seal is engineered to provide durable sealing performance for select Chevrolet, Ford, and Pontiac models. Designed with precision dimensions and a nitrile sealing surface, this seal helps maintain transmission integrity and prevent leaks.

• Width: 0.313 inches for a compact, effective seal
• Outside Diameter: 2.754 inches ensuring proper fitment
• Shaft Diameter: 1.875 inches matching OEM specifications
• Sealing Surface Type: Nitrile for resistance to oil and wear
• Compatible with manual transmissions on Chevrolet, Ford, and Pontiac vehicles

Detailed Description of SKF Manual Transmission Seal 18658

This SKF manual transmission seal (part number 18658) is designed to fit a range of classic and modern vehicles including Chevrolet Camaro, Corvette, Malibu, Monte Carlo, Nova, Ford Bronco, and Pontiac Firebird, Grand Am, Grand LeMans, and LeMans. The seal’s nitrile sealing surface offers reliable resistance to transmission fluids and environmental factors, helping to prevent leaks and maintain smooth operation. With a width of 0.313 inches and an outside diameter of 2.754 inches, it fits precisely around shafts with a diameter of 1.875 inches, ensuring a secure and effective seal within the manual transmission assembly.

Common Applications and Issues Addressed

• Prevents manual transmission fluid leaks in Chevrolet Camaro and Ford Bronco models
• Reduces contamination ingress in Pontiac Firebird and Grand Am transmissions
• Maintains proper shaft sealing to avoid premature wear and transmission damage
• Helps restore transmission performance in vehicles experiencing seal degradation
• Supports longevity of manual transmission components in classic and performance cars

Installation Notes and Tips

• Ensure the shaft and housing surfaces are clean and free of debris before installation
• Use appropriate tools to avoid damaging the nitrile sealing surface during installation
• Verify the seal orientation matches OEM specifications for optimal sealing
• Check shaft diameter compatibility (1.875 inches) to confirm fitment
• Inspect surrounding transmission components for wear or damage during replacement

Quality Assurance and Warranty Information

SKF manufactures the 18658 manual transmission seal to meet strict quality standards, ensuring consistent performance and durability. The nitrile sealing surface is tested for resistance to transmission fluids and environmental conditions. While specific warranty details may vary, SKF products typically come with a limited warranty against manufacturing defects, providing confidence in the product’s reliability for Chevrolet, Ford, and Pontiac manual transmission applications.