Early 220D 240D 300D 300CD 300TD Non Turbo Automatic Transmission Front Reseal Kit

For 1968 to 1983 NON TURBO Non Turbo Models ONLY

This kit will include the parts and detailed PDF instructions you will need to repair a front transmission case leak in your 1968 to 1983 NON TURBO diesel automatic. From my experience, one of the biggest leak problems comes from the large o-ring that seals the high pressure pump inside the transmission. This o-ring hardens with age and will leak profusely. You might think the leak is just coming from the front torque converter lip seal, but don’t be fooled. If you just replace that small round seal and think you have solved your leak problem, you may end up having to remove the transmission again! Any time you are repairing a front transmission seal leak, ALWAYS replace the pump o-ring as well as the torque converter lip seal. No instructions are included for the rear output shaft seal. That seal can be replaced with the transmission in the car, but will require a special nut removal tool.

Early 220D 240D 300D 300CD 300TD Non Turbo Automatic Transmission Front Reseal Kit
Free Add-Ons Included:

Early Automatic Transmission Reseal Instructions by Kent Bergsma - Download

Product Details


IMPORTANT NOTE: The transmission must be removed to replace the front seals. No instructions are included for transmission removal. If you are not familiar with removing and replacing a diesel automatic transmission I have a separate manual available on my website that covers that procedure.

On these older automatics the transmission case must be separated to replace the front pump seal

In many cases I have found the o-ring so dried up and brittle that it just falls apart while attempting to remove it from the pump housing.


How to view the PDF digital instructions:

Once you complete the purchase of this product you will be able to download the digital instructions immediately when you are logged in and on your personal account page (click on My Account). Any PDFs will show up under My PDF Manuals. You will be allowed three downloads, so please save the file on your machine for backup.