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Product Details
The Turbosmart Billet Turbo Oil Drain Adapter (TS-0804-1011) is a premium turbocharger oil return fitting designed for medium-frame turbochargers featuring a 50.8mm (2-inch) T3/T4-style oil drain bolt pattern. Manufactured in Australia from high-quality billet aluminum and finished in durable black hard anodizing, this adapter provides a clean, secure, and professional connection between the turbocharger's oil drain outlet and an aftermarket -10AN oil return system.
Proper turbocharger oil drainage is essential for maintaining reliable turbocharger operation. Engine oil continuously circulates through the turbocharger's bearing housing, providing lubrication and helping remove heat generated during operation. After passing through the turbocharger, the oil must return to the engine or oil collection system without excessive restriction.
The Turbosmart TS-0804-1011 is engineered to simplify this connection by converting a compatible two-bolt turbocharger oil drain flange into a female -10AN O-ring boss (ORB) outlet.
Its precision-machined billet aluminum construction provides a durable alternative to basic stamped-steel oil drain flanges, while the included silicone O-ring provides sealing at the turbocharger mounting interface.
The black hard-anodized finish enhances surface durability and corrosion resistance while complementing aftermarket turbocharger plumbing and engine bay components.
Designed for universal performance applications, the TS-0804-1011 is particularly useful for custom turbocharged Honda and Acura K-Series and B-Series builds, as well as other vehicles equipped with compatible medium-frame T3/T4-style turbochargers.
Whether fabricating a new turbocharger oil return system, upgrading existing oil drain plumbing, or replacing a damaged turbo oil drain flange, the Turbosmart TS-0804-1011 Billet Turbo Drain Adapter offers reliable construction, precise fitment, and a convenient -10AN connection.
Features
Genuine Turbosmart Component: Engineered for high-performance turbocharger oil drain applications.
CNC-Machined Billet Aluminum: Provides durable construction and precise mounting dimensions.
50.8mm Bolt Spacing: Designed for compatible medium-frame T3/T4-style turbochargers.
-10AN ORB Female Outlet: Accepts an appropriate -10 O-ring boss adapter or fitting.
Black Hard-Anodized Finish: Provides improved surface durability and corrosion resistance.
Australian-Made Construction: Manufactured to Turbosmart's quality standards.
Silicone O-Ring Included: Provides sealing at the turbocharger oil drain mounting surface.
Compact Adapter Design: Helps simplify oil return plumbing in confined engine bays.
Two-Bolt Mounting Configuration: Designed for compatible turbocharger oil drain flanges.
Gravity-Drain Applications: Intended for properly configured turbocharger oil return systems.
Aftermarket AN Plumbing Compatibility: Allows integration with suitable -10AN oil return fittings and hoses.
Precision-Machined Sealing Surface: Supports reliable installation when paired with a compatible turbocharger housing.
Durable Metal Construction: Designed for demanding turbocharger operating environments.
Custom Turbo System Compatibility: Suitable for a variety of performance engine applications.
Turbocharger Oil Return Upgrades: Provides an alternative to conventional hose-barb drain flanges.
Professional Engine Bay Appearance: Black finish complements aftermarket performance hardware.
Serviceable O-Ring Connection: Uses a replaceable sealing component at the mounting interface.
Compatible Drain Extension Available: Designed to work with Turbosmart's -10AN 70mm drain extension, TS-0804-1021.
Universal Vehicle Application: Fitment is determined by the turbocharger oil drain flange dimensions.
Turbosmart Part Number TS-0804-1011: Ensures accurate product identification.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0804-1011
- Product Type: Billet Turbocharger Oil Drain Adapter
- Application: Turbocharger Oil Return / Oil Drain
- Turbocharger Frame Compatibility: Medium-Frame T3/T4-Style Applications
- Mounting Bolt Spacing: 50.8mm / 2.00 Inches
- Outlet Size: -10AN ORB Female
- Material: Billet Aluminum
- Finish: Black Hard Anodized
- Mounting Configuration: Two-Bolt Turbocharger Oil Drain Flange
- Sealing Method: Silicone O-Ring
- Manufacturing Origin: Australia
- Vehicle Fitment: Universal, Based on Turbocharger Compatibility
- Compatible Turbosmart Drain Extension: TS-0804-1021
- Quantity: One Adapter
- UPC: 9329677016673
Billet Aluminum Construction
The TS-0804-1011 is manufactured from high-quality billet aluminum.
Billet construction allows the adapter to be precision-machined for consistent mounting dimensions, accurate port geometry, and proper sealing surface alignment.
Compared with basic stamped-steel drain flanges, a machined billet adapter provides a rigid mounting interface and a clean, professional appearance.
Its aluminum construction also offers corrosion resistance and relatively low weight.
Black Hard-Anodized Finish
Turbosmart finishes the adapter with a black hard-anodized coating.
Hard anodizing creates a protective surface layer on the aluminum, improving resistance to wear and corrosion.
This finish is especially beneficial in engine bays exposed to heat, moisture, oil residue, and repeated servicing.
The black finish also complements other aftermarket turbocharger fittings and AN plumbing components.
50.8mm T3/T4-Style Mounting Pattern
The adapter features a 50.8mm (2-inch) mounting hole spacing, commonly found on medium-frame T3/T4-style turbochargers.
This measurement refers to the center-to-center distance between the two mounting holes.
Correct bolt spacing is essential for proper installation.
Before ordering, measure the turbocharger's oil drain flange and confirm that the sealing surface and drain opening are compatible.
Some aftermarket turbochargers use different mounting patterns, even when described as T3/T4-style units.
-10AN ORB Female Outlet
The TS-0804-1011 features a female -10AN O-ring boss outlet.
This provides a connection point for a compatible -10 ORB fitting or adapter.
An O-ring boss connection uses a dedicated O-ring to seal the threaded fitting rather than relying on the threads themselves.
This design allows the adapter to be integrated into a properly configured -10AN turbocharger oil return system.
Important: A -10AN ORB female port is not the same as a male -10AN flare connection. A compatible -10 ORB adapter or fitting is required before connecting standard AN hose ends.
Silicone O-Ring Sealing
The adapter includes a silicone O-ring designed to seal the mounting interface between the adapter and a compatible turbocharger bearing housing.
Proper O-ring installation is essential for preventing external oil leaks.
The O-ring should be inspected for damage, contamination, or improper seating before installation.
The turbocharger mounting surface must also be clean and free from damage.
Avoid using excessive sealant that could enter the turbocharger oil drain passage.
Turbocharger Oil Drain Function
Turbochargers rely on a continuous supply of engine oil to lubricate their internal bearing assemblies.
After circulating through the bearing housing, the oil must drain back into the engine.
Most conventional turbocharger oil return systems rely on gravity rather than a pressurized return circuit.
The oil drain line must therefore provide sufficient flow capacity and be routed to minimize restrictions.
The TS-0804-1011 provides a connection between the turbocharger drain outlet and the oil return plumbing.
It does not regulate oil pressure or replace an oil feed fitting.
Benefits of -10AN Oil Return Plumbing
A -10AN oil return system is commonly used in aftermarket turbocharger installations.
Potential benefits include:
A large nominal hose size suitable for many turbo oil return applications.
Compatibility with aftermarket AN fittings and hoses.
Flexible routing options for custom engine bays.
Serviceable connections when properly assembled.
Convenient integration with compatible oil pan return fittings.
Actual oil drain performance depends on the hose's internal diameter, fitting geometry, routing, and turbocharger requirements.
Always follow the turbocharger manufacturer's minimum oil return size recommendations.
Gravity Drain Routing Requirements
Proper oil return routing is critical for turbocharger reliability.
The drain hose should generally run continuously downward from the turbocharger to the engine's oil return location.
Avoid sharp bends, restrictive fittings, low points, and unnecessary horizontal sections.
Poor drainage can allow oil to accumulate in the turbocharger bearing housing.
This may contribute to oil leakage past the turbocharger's sealing system, excessive exhaust smoke, or premature component wear.
The TS-0804-1011 provides the flange connection but does not compensate for improperly designed oil return plumbing.
Compatible Turbosmart Drain Extension
Turbosmart identifies the TS-0804-1021 -10AN 70mm Turbo Drain Extension as a compatible accessory for this adapter.
The extension can provide additional clearance or help position the oil return connection in certain turbocharger installations.
This may be useful where the turbocharger bearing housing is located close to the exhaust manifold, turbine housing, or surrounding engine components.
The extension is sold separately.
Turbocharger Frame Size Options
Turbosmart offers several billet turbo drain adapter configurations to accommodate different turbocharger mounting patterns.
TS-0804-1010: Small-frame turbo drain adapter with 38–44mm slotted mounting arrangement.
TS-0804-1011: Medium-frame T3/T4-style turbo drain adapter with 50.8mm bolt spacing and -10 outlet.
TS-0804-1012: Large-frame turbo drain adapter with 52.4mm bolt spacing and -10 outlet.
These adapters are not automatically interchangeable.
Always measure the turbocharger mounting pattern before selecting the correct part number.
Turbocharger Oil Feed vs. Oil Drain
Turbocharger oil feed and oil drain components serve different purposes.
The oil feed system delivers pressurized engine oil to the turbocharger.
The oil drain system allows used oil to return to the engine after passing through the bearing assembly.
The TS-0804-1011 is specifically designed for the turbocharger oil drain side.
It should not be used as an oil feed adapter or oil pressure regulation device.
Custom Honda and Acura Turbo Builds
The Turbosmart TS-0804-1011 is particularly useful in custom Honda and Acura turbocharger installations.
K-Series and B-Series turbo builds often require custom oil return plumbing because the engine was not originally equipped with the aftermarket turbocharger.
A properly selected billet drain adapter allows the turbocharger to be connected to an appropriately sized oil return hose and oil pan fitting.
This helps create a clean, serviceable oil return arrangement.
Professional Turbocharger Plumbing
Reliable turbocharger lubrication depends on correct oil feed pressure, proper oil return routing, and suitable fittings.
The oil return connection must be compatible with the turbocharger and capable of allowing oil to drain without excessive restriction.
When assembling a custom system, verify the entire oil return path rather than selecting components based on hose size alone.
Professional fabrication and installation are recommended for custom turbocharger applications.
Common Reasons for Replacement
Turbocharger Installation: Provides a drain connection for compatible T3/T4-style turbochargers.
Converting to AN Oil Return Lines: Allows integration with a suitable -10AN oil drain system.
Damaged Oil Drain Flange: Replaces a cracked, warped, or otherwise damaged adapter.
Oil Drain Leaks: Provides a replacement when an existing flange or sealing surface is defective.
Custom Turbo Builds: Supports fabrication of aftermarket turbocharger oil return plumbing.
Turbocharger Upgrades: Allows a compatible turbocharger to be connected to an existing or revised oil return system.
Replacing Hose-Barb Fittings: Provides an alternative connection for aftermarket AN plumbing.
Engine Bay Plumbing Upgrades: Supports cleaner and more serviceable turbocharger oil return routing.
Turbo System Rebuilds: Provides a new drain adapter during turbocharger maintenance.
Corroded or Damaged Hardware: Replaces an existing drain flange that is no longer serviceable.
Motorsport Applications: Supports durable turbocharger plumbing in demanding performance environments.
Custom Fabrication Projects: Provides a precision-machined connection for compatible turbocharger systems.
Installation Notes
Verify Turbocharger Compatibility: Confirm that the turbocharger uses a compatible 50.8mm two-bolt oil drain mounting pattern.
Measure Mounting Hole Spacing: Verify the center-to-center distance between the mounting holes.
Inspect the Turbocharger Drain Surface: Check for damage, corrosion, or contamination.
Confirm Outlet Clearance: Ensure sufficient room for the -10 ORB fitting and oil return hose.
Allow the Engine to Cool: Never service turbocharger components while hot.
Remove the Existing Drain Flange: Follow the turbocharger manufacturer's recommended procedure.
Clean the Mounting Surface: Remove old gasket material, oil residue, and debris.
Inspect the Included O-Ring: Check for cuts, deformation, or other damage.
Install the Silicone O-Ring: Position it correctly in the adapter's sealing groove.
Align the Adapter: Position the TS-0804-1011 against the turbocharger drain outlet.
Use Compatible Mounting Hardware: Select the correct bolts for the turbocharger bearing housing.
Tighten Evenly: Follow the turbocharger manufacturer's mounting fastener torque specifications.
Select the Correct ORB Fitting: Use a compatible -10 O-ring boss adapter.
Inspect the ORB Fitting Seal: Confirm that its O-ring is correctly installed and suitable for engine oil service.
Connect the Oil Return Hose: Use suitable hose and fittings designed for turbocharger oil return applications.
Maintain a Downward Drain Path: Route the oil return hose to promote gravity drainage.
Avoid Sharp Bends: Prevent kinks and restrictions that could interfere with oil flow.
Maintain Adequate Hose Clearance: Keep the hose away from excessive exhaust heat and moving components.
Use Heat Protection if Necessary: Install appropriate shielding or protective sleeving.
Verify Oil Pan Return Location: Ensure the return fitting is positioned appropriately for the engine and turbocharger installation.
Check All Connections: Inspect the flange, ORB fitting, hose ends, and oil pan connection.
Prime the Turbocharger if Required: Follow the turbocharger manufacturer's lubrication procedure.
Start the Engine and Inspect for Leaks: Check the drain adapter and return plumbing.
Monitor Oil Drain Performance: Watch for oil leakage, excessive exhaust smoke, or other signs of drainage problems.
Reinspect After Initial Operation: Check all fittings and connections once the system has completed several heat cycles.
Important: Improper turbocharger oil drainage can cause oil leakage, excessive smoking, and turbocharger damage. Always follow the turbocharger manufacturer's oil return requirements.
What's Included
(1) Turbosmart Billet Turbo Oil Drain Adapter – T3/T4 50.8mm, -10AN ORB, Black (TS-0804-1011)
(1) Silicone O-Ring for the Turbocharger Mounting Interface
Note: Mounting bolts, -10 ORB fittings, oil return hoses, AN hose ends, and oil pan return fittings are not included and must be purchased separately as required.
Complete your turbocharger oil return system with the Turbosmart Billet Turbo Oil Drain Adapter (TS-0804-1011), designed for compatible medium-frame T3/T4-style turbochargers featuring 50.8mm mounting bolt spacing.
Featuring precision-machined billet aluminum construction, a durable black hard-anodized finish, a -10AN ORB female outlet, and an included silicone O-ring, this adapter provides a clean, reliable connection for custom turbocharger oil drain plumbing.
Whether building a turbocharged Honda K20/K24, upgrading a B-Series turbo setup, or fabricating a custom performance turbocharger system, the Turbosmart TS-0804-1011 delivers the quality, compatibility, and professional finish expected from Turbosmart.
| Part Number: | TS-0804-1011 |
| Brand: | Turbosmart |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
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