SKF 18999 Automatic Transmission Seal - Rear

SKF 18999 Automatic Transmission Seal

SKF 18999 is an automatic transmission seal built around precise dimensions for a proper sealing surface and reliable fluid control. With a 1.885 shaft diameter, 2.704 outside diameter, and 0.552 width, this seal is sized for rear transmission applications where accurate fit matters.

Compatible with select Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, and Dodge truck and SUV applications, SKF 18999 supports clean operation in demanding driveline environments.

Key Features

• Part number: 18999
• Automatic transmission seal for rear applications
• Shaft diameter: 1.885
• Outside diameter: 2.704
• Width: 0.552
• Engineered with premium sealing materials for application-specific performance
• Designed to help keep lubricant contained and contaminants out

Detailed Description

SKF 18999 is an OE-style automatic transmission seal developed with the dimensional accuracy needed for transmission sealing service. SKF has a long history in seal design and manufacturing, and this part reflects that focus with a specific fit profile and material selection suited to the operating environment. For buyers searching for an automatic transmission seal for 2002-2005 Dodge Dakota rear New Process 241, 2002-2005 Dodge Durango rear New Process 241, or 2002-2005 Dodge Ram 1500 rear New Process 241, this seal provides a direct replacement option. It also fits 2003-2005 Chevrolet Express 2500 rear, 2003-2005 Chevrolet Express 3500 rear, 2003-2005 GMC Savana 2500 rear, and 2003-2005 GMC Savana 3500 rear. Part number 18999 is also referenced by 8675730 and 145818999 for the same application.

What It Helps Fix

• Transmission fluid leakage at the seal area
• Contamination entering the transmission housing
• Wear-related sealing loss during service replacement
• Incorrect seal fit from mismatched dimensions
• Rear transmission sealing issues on supported Dodge, Chevrolet, and GMC applications

Installation Notes and Tips

Verify the shaft diameter, outside diameter, and width before installation to confirm the seal matches the transmission opening and shaft surface. Inspect the sealing surface for scoring, burrs, or debris before installing SKF 18999, and replace any worn components that could damage the new seal. For fitment-specific service, confirm the vehicle application and rear position listed for your model year, including New Process 241-equipped Dodge Dakota, Durango, and Ram 1500 applications.

Quality Assurance

SKF manufactures seals to defined specifications using premium materials and quality-controlled production methods. The brand’s seal engineering background and long-standing focus on durability support consistent performance in transmission service.