SKF 99121 Manual Transmission Input Shaft Repair Sleeve - Left or Right

SKF 99121 Manual Transmission Input Shaft Repair Sleeve

SKF 99121 is a manual transmission input shaft repair sleeve for restoring worn sealing surfaces without removing the shaft. Built for a 1.299-inch shaft diameter, it provides a precise stainless-steel surface for a cleaner seal on affected Nissan, Subaru, Acura, and related applications.

Key Features

• Part number 99121 manual transmission input shaft repair sleeve
• 1.299-inch shaft diameter
• Made from AISI 304 stainless steel
• Installs without changing seal size
• Can be installed without removing the shaft
• Includes an installation tool for proper placement

Detailed Description

SKF 99121 Speedi-Sleeve is used to refinish shafts that have become scored or worn at the sealing area. Instead of regrinding the shaft, this sleeve creates a new outer sealing surface quickly and accurately, helping restore the contact area needed for a proper seal. It is a practical solution for manual transmission input shaft wear on vehicles such as Subaru WRX, Subaru Impreza, Nissan Maxima, Nissan Altima, and Acura NSX applications listed in the fitment data. This part cross-references CHR 99121 for the same application.

What It Helps Fix

• Oil leakage at a worn transmission input shaft seal surface
• Scored or grooved shaft sealing areas
• Seal wear caused by an uneven shaft finish
• Time-consuming shaft regrinding and refinishing
• Repeat seal failure from an inconsistent sealing surface

Installation Notes and Tips

Measure the shaft diameter before installation to confirm the 1.299-inch specification. The sleeve installs over the worn area and does not require a seal size change. Use the supplied installation tool to seat the sleeve evenly and avoid distortion during installation. Fitment includes broad coverage across 1983-2015 Nissan and Subaru applications, plus select Acura, INFINITI, Mercury, and Dodge models; verify the exact year, model, and position listed for your vehicle before ordering.

Quality Assurance

SKF manufactures Speedi-Sleeves to consistent quality standards using stainless-steel construction for long service life and reliable sealing performance.