National 711060 Manual Transmission Shift Shaft Seal

Manual Transmission Shift Shaft Seal for Tremec Applications

The National 711060 manual transmission shift shaft seal is a metric oil seal built for select Tremec T56 and Tremec 6060 transmission applications. It is sized for a 15.000 mm shaft with a 21.000 mm housing bore, making it a direct-fit sealing component for service work on vehicles such as the Chevrolet Camaro, Dodge Viper, and Ford Mustang.

National has supplied sealing solutions for decades, and this seal uses polyacrylate sealing material for transmission service where consistent shaft sealing is required. Part number 711060 is also referenced in OE and aftermarket interchange listings for the same application.

Key Features

• Manual transmission shift shaft seal / oil seal
• Part number: 711060
• Metric dimensions: 15.000 mm shaft, 21.000 mm housing bore
• Outside diameter: 21.150 mm; width: 4.000 mm
• Polyacrylate sealing material
• Designed for Tremec T56 and Tremec 6060 transmission service
• Cross-reference example: Timken SL260128

Detailed Description

National 711060 is a transmission sealing component used at the shift shaft area to help maintain proper fluid containment in manual gearboxes. Its metric sizing and polyacrylate construction make it a practical replacement for service on late-model performance cars and trucks that use Tremec 6060 or Tremec T56 transmissions. This includes applications such as 2007-2014 Ford Mustang, 2010-2015 Chevrolet Camaro, and 1998-2009 Chevrolet Corvette with the correct transmission configuration.

Additional fitment coverage includes 2009-2015 Dodge Challenger, 2008-2013 Chevrolet Corvette, 1998-2006 Dodge Viper, 2004-2006 Pontiac GTO, 2005-2006 Chevrolet SSR, and 2004-2006 Dodge Ram 1500 with Tremec T56 or Tremec 6060 transmission notes as listed. The 711060 seal is also listed for select Aston Martin, Cadillac, Pontiac, and Chevrolet manual transmission applications.

What It Helps Address

• Transmission fluid seepage at the shift shaft
• Oil leakage around the manual transmission housing bore
• Seal wear from age, heat, and mileage
• Service replacement during Tremec T56 or 6060 transmission repair
• Restoration work on Camaro, Corvette, Mustang, Challenger, and Viper manual transmissions

Installation Notes and Tips

Verify shaft diameter, housing bore, and transmission type before installation. This seal is specified for a 15.000 mm shaft and a 21.000 mm housing bore, so matching the transmission variant is important for proper seating and sealing. Clean the bore and shaft surface thoroughly before installing the new seal, and inspect the shift shaft for scoring or wear that could affect seal life.

Use the vehicle and transmission notes in the fitment data to confirm application details for your Chevrolet Camaro, Dodge Viper, Ford Mustang, or other listed model before service. Part number 711060 should be matched to the exact transmission configuration shown in the fitment listing.

Quality Assurance

National has a long history in sealing products and continues to develop sealing solutions for modern vehicles. The 711060 seal is built as a metric transmission oil seal using polyacrylate material for service applications that require accurate dimensions and dependable sealing performance.