617 Diesel Garrett T3 Turbocharger 200K High Performance Overhaul Kit

For 5 cylinder Garrett turbos on 300SD 300D 300CD and 300TD 1978 to 1985

For 5 cylinder Garrett turbos on 300SD 300D 300CD and 300TD 1978 to 1985. Buy the complete kit and save! If your Garrett T3 turbo has over 200K Kent highly recommends you plan on doing the complete overhaul. If you plan to just install the turbocharger service reseal kit you may open it up and find the turbine shaft and/or the compressor wheel are worn out. You may just want to overhaul it right the first time!! You can not beat this price anywhere for the completeness of the unique kit. If you buy just the 100K kit and then decide later that you need the turbine shaft and wheel please do not email us asking for a discount. If you buy the parts individually you must pay the individual pricing. 

617 Diesel Garrett T3 Turbocharger 200K High Performance Overhaul Kit
Free Add-Ons Included:

Garrett T3 Diesel Turbocharger Waste Gate Inspection and Testing - On Demand Video

Product Details

IMPORTANT NOTE: WE HAVE HAD CUSTOMERS ORDER THIS KIT WHEN THEY HAVE A KKK TURBO. It WILL NOT work for KKK turbos. PLEASE CHECK THE TYPE OF TURBO YOU HAVE BEFORE ORDERING. See picture showing difference below. If you are not sure to send us pictures of your turbocharger and we will advise.

This overhaul kit includes the following: Click below on the related product links to each component to read a complete description of each.

  • 100K Service Reseal Kit with Instructions
  • Turbine wheel and Shaft 
  • Compressor Wheel 
  • Complete Instructions

Our center section bearing (journal bearing) measures:

OD (outside diameter)  15.68 mm

ID (inside diameter) 10.15 mm

If you are not sure you will need a new turbine wheel and shaft you can remove the turbo and take it apart and check the wear on your old shaft before ordering.  The new shaft bearing diameter measures .3965 inches and the grove for the sealing ring measures .061 inches ( using multiple feeler gauges to measure the width. Our instructions show how to check the side play in the rear sealing ring groove during assembly.

The two large o-rings in the kit are for the compression to intake manifold coupling. You will note that the coupling is not the same size on both ends, but the o-rings are the same size.
Rest assured you can use either o-ring on either end. The larger diameter end accepts the same o-ring with a “little more” stretch.

RECOMMENDATIONS: We also offer other items you may need to overhaul your turbo but are not included in this kit:

  • Special Tool Kit for Turbo Removal by leaving Turbine Housing on the Engine
  • If you don't order the toolkit you will need permanent thread locker for the turbine shaft nut

PLEASE NOTE: This kit will only work on Garrett T3 Turbos up to 1985 INCLUDING THOSE WITH THE TRAP OXIDIZER.  It will not work on the KKK brand found on some Mercedes diesels. The differences in the two types are shown in the picture below.

NOTES ON "BALANCING" - Our experience with the company that builds these replacement parts has been excellent. They use very sophisticated equipment to “zero” balance both the turbine wheel and the compressor wheel individually. There is no indexing or keyway that locks the two parts together. Even when you tighten down the compressor wheel and torque it properly it will move slightly so it would be very hard to index them even if you were to send them out to have them “check balanced” together. I personally have installed over 50 of these and we have sold thousands and have never had a complaint about balancing. A bigger concern is the condition of your center section and the function of the wastegate. I know there are those that will tell you-you “must” balance these as a unit, but remember we are not talking about a race car here that is turning 6 to 7 thousand rpm.


When you rebuild your turbo you will want to check the operation of your wastegate and check/adjust the boost pressure after you reinstall your turbo. We have a video on how to open up, inspect and test your wastegate. This video is included free if you purchase our 200K kit. See related products below for more information on this video and our turbo boost pressure test kit.

Please note: Currently we do not have a source for new repair parts for the Garrett T3 wastegate assembly. We realize the problem here and need to warn you if your wastegate needs replacement parts you will need to look for used replacements. Most of the time we are sold out of these used parts.

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