Upgrade your T04E turbocharger with this all-inclusive Carbon Seal Conversion Kit — engineered for improved oil sealing and optimized performance in draw-through carbureted systems.
This kit is designed for those looking to enhance turbo reliability or convert their setup to a carbon seal configuration. Whether you’re building a draw-through application or need better oil control, this conversion delivers precision-fit components and long-term durability.
What’s Included:
- Billet Black Anodized Seal Plate
- Carbon Seal (pre-installed in seal plate)
- 360° Thrust Bearing (superior to standard 270° designs)
- 2 Journal Bearings
- 2-Piece Thrust Collar
- Thrust Spacer
- Shaft Nut
- 4 Seal Plate Bolts
- 4 Snap Rings
- Stagger Gap Turbine Seal
- Spring Ring
- Bearing Housing O-Ring
- Compressor Housing O-Ring
Product Details:
- All parts are brand new and precision-machined
- Converts most journal-bearing T04E turbos (not compatible with ball-bearing models)
- Ideal for draw-through carbureted builds or enhanced oil sealing needs
- Billet components and high-quality materials ensure performance and reliability
Additional Info:
- Professional installation recommended (simple instructions included)
- Fast shipping from the USA with tracking
- Returns accepted within 30 days (buyer pays return shipping)
Build with confidence — this complete T04E carbon seal conversion kit is the perfect upgrade for draw-through setups or improved oil control.
California buyers: Sales tax applies
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About This T04E Carbon Seal Conversion Kit
The Garrett T04E is one of the most widely used turbocharger platforms in performance and commercial applications — found in factory diesel truck installations, industrial equipment, marine engines, and countless aftermarket performance builds. The original T04E uses a piston ring oil seal design that performs well on fuel-injected and blow-through setups but lets oil past when the compressor housing sees vacuum, as it does on a draw-through carburetor setup.
This conversion kit upgrades the T04E from the standard piston ring seal to a carbon face seal arrangement, combined with a new billet seal plate. Carbon seals provide positive contact sealing that remains effective even with elevated shaft temperatures and conditions where piston rings allow oil migration.
What Is Included
- Carbon face seal (pre-installed in the seal plate) and stagger gap turbine seal
- Billet aluminum seal plate — precision machined for exact T04E fitment
- Journal bearings
- Thrust bearing assembly
- Full O-ring and hardware set
Who Needs a Carbon Seal Conversion
If your T04E is seeping oil at the compressor housing or leaving a film on intercooler piping under boost, the piston ring seal has worn or the compressor housing is seeing vacuum. First check for a restricted air inlet, a poor oil drain or high crankcase pressure; a carbon seal is the fix when the compressor housing sees vacuum. They are the right choice for any rebuilt T04E going onto a draw-through carburetor setup, where the compressor housing sees vacuum.
PT Turbo — T04E Specialists Since 1978
This kit is the same carbon seal package PT Turbo uses in our own professional T04E rebuilds in San Bernardino, CA. If you would prefer to ship your core to us for a complete rebuild using these components, contact us for a quote. We also carry T04E housings, compressor wheels, and complete exchange units.
Weighing a rebuild against a replacement? Our guide to OEM vs remanufactured turbochargers covers when each option makes more sense.
Installation Instructions
Step-by-step instructions are included with every kit, and you can read or print them before your kit arrives.
Download the installation instructions (PDF)
The instructions cover all 26 steps with a photo of each one, plus a parts checklist and a final pre-start checklist.
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