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Product Details
The Turbosmart GenV Twin Port Internal Wastegate Actuator (TS-0620-4012) is a premium boost control upgrade specifically engineered for BorgWarner EFR Series turbochargers. Featuring a 14 PSI preinstalled spring, advanced twin-port pressure control, and a durable black anodized aluminum housing, this actuator delivers improved boost response, precise wastegate operation, and greater tuning flexibility compared with conventional single-port actuators.
Developed using technology from Turbosmart's award-winning GenV external wastegate platform, this internal wastegate actuator incorporates a large diaphragm working area, precision-machined components, and a proprietary swivel-joint mechanism to provide consistent and predictable wastegate movement.
Unlike traditional single-port wastegate actuators, the GenV Twin Port IWG allows boost pressure to be applied to both sides of the actuator diaphragm through a compatible boost control system. This provides greater control over wastegate movement, allowing tuners to optimize boost response, manage torque delivery, and maintain more consistent boost pressure throughout the engine's operating range.
The TS-0620-4012 is designed specifically for BorgWarner EFR B1 and B2 frame turbochargers, including compatible single-scroll and twin-scroll configurations. Turbosmart includes three interchangeable actuator rods to accommodate the different EFR turbocharger arrangements.
A key feature of the GenV actuator is its hard-chromed intermediate rod and Nitronic valve guide, which provide improved wear resistance, reliable sealing, and consistent actuator movement. The proprietary swivel-joint design helps maintain linear actuation while reducing unwanted side loading.
The actuator also features Turbosmart's unique locking collar system, allowing the internal spring configuration to be changed without replacing the entire actuator assembly.
Supplied with a 14 PSI spring preinstalled, the kit includes additional springs that allow multiple manufacturer-approved base pressure configurations. Available spring combinations cover a nominal range of approximately 5 PSI to 26 PSI, providing flexibility for different turbocharger and engine management requirements.
Whether upgrading a BorgWarner EFR turbocharger on a Honda K20/K24, building a high-performance Acura RSX, or assembling a custom motorsport turbo system, the Turbosmart TS-0620-4012 GenV Twin Port Wastegate Actuator delivers advanced boost control capabilities and dependable performance.
Features
Genuine Turbosmart GenV IWG Actuator: Designed specifically for BorgWarner EFR Series turbochargers.
Twin Port Boost Control: Allows pressure control on both sides of the actuator diaphragm.
14 PSI Preinstalled Spring: Supplied with a nominal 14 PSI mechanical base pressure configuration.
BorgWarner EFR B1/B2 Compatibility: Supports compatible single-scroll and twin-scroll EFR turbochargers.
Black Anodized Aluminum Housing: Provides lightweight construction and a clean performance appearance.
Large Diaphragm Working Area: Improves actuator response and boost control sensitivity.
Proprietary Swivel-Joint Mechanism: Promotes smooth, linear wastegate movement.
Hard-Chromed Intermediate Rod: Designed for durability and consistent operation.
Nitronic Valve Guide: Provides excellent resistance to wear and galling.
Improved Lower Chamber Sealing: Supports effective twin-port pressure control.
GenV Locking Collar System: Simplifies spring replacement and actuator servicing.
Adjustable Spring Configurations: Supports nominal base pressure settings from approximately 5 PSI to 26 PSI.
Three Interchangeable Actuator Rods: Accommodates compatible BorgWarner EFR turbocharger configurations.
Dual-Chamber Pressure Control: Provides greater tuning flexibility than conventional single-port actuators.
1/8-Inch NPT Pressure Reference Ports: Compatible with appropriate boost control fittings.
Improved Boost Response: Helps optimize wastegate operation and turbocharger response.
Enhanced High-RPM Boost Control: Supports more consistent boost regulation when properly configured.
Electronic Boost Controller Compatible: Designed for advanced twin-port boost control strategies.
Torque Management Capability: Allows tuners to refine boost delivery in traction-limited applications.
Serviceable Actuator Assembly: Supports spring changes and maintenance.
Direct EFR Actuator Upgrade: Designed for compatible BorgWarner EFR internal wastegate systems.
Turbosmart Part Number TS-0620-4012: Ensures accurate identification and ordering.
Popular Performance Applications
The Turbosmart TS-0620-4012 is designed for compatible BorgWarner EFR B1 and B2 frame turbochargers equipped with an internal wastegate.
Popular applications include:
Honda Civic K20 Turbo Builds: Custom K20A, K20A2, K20Z1, and K20Z3 turbo systems utilizing compatible BorgWarner EFR turbochargers.
Honda Civic K24 Turbo Builds: High-performance K24 turbocharger installations using internally wastegated EFR units.
Acura RSX Type-S Turbo Builds: Suitable for compatible K20 BorgWarner EFR turbocharger systems.
Acura TSX K24 Turbo Applications: Supports custom EFR-based forced-induction configurations.
Honda Accord K-Series Turbo Builds: Suitable for compatible BorgWarner EFR turbocharger installations.
Honda S2000 Turbo Builds: Supports compatible F20C and F22C EFR turbo systems.
Acura Integra Turbo Builds: Suitable for B-Series and K-Series turbocharger applications using compatible EFR units.
Honda Prelude Turbo Builds: Supports custom H-Series and K-Series BorgWarner EFR installations.
K20/K24 Frankenstein Turbo Builds: Suitable for high-output EFR turbocharger configurations.
B16, B18, and B20 Turbo Builds: Compatible with internally wastegated BorgWarner EFR turbocharger systems.
Subaru WRX and STI Turbo Builds: Suitable for compatible aftermarket EFR turbocharger installations.
Mitsubishi Evolution Turbo Builds: Supports custom EFR-based turbo systems.
Nissan SR20DET and RB-Series Turbo Builds: Suitable for compatible BorgWarner EFR installations.
Toyota 1JZ and 2JZ Turbo Builds: Supports custom EFR turbocharger configurations.
Drag Racing and Roll Racing Applications: Provides advanced boost control for compatible competition turbocharger systems.
Important: Fitment is determined by the BorgWarner EFR turbocharger model and internal wastegate configuration, not the vehicle's make, model, or engine code. This actuator is not intended for externally wastegated turbochargers or unrelated turbocharger models.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0620-4012
- Product Series: GenV IWG Twin Port
- Product Type: Internal Wastegate Actuator
- Turbocharger Compatibility: BorgWarner EFR B1 and B2 Frame Turbochargers
- Scroll Compatibility: Compatible with Single-Scroll and Twin-Scroll EFR Configurations
- Preinstalled Spring Pressure: 14 PSI / Approximately 0.97 Bar
- Available Spring Configurations: Approximately 5–26 PSI
- Actuator Configuration: Twin Port / Dual Chamber
- Housing Material: Billet Aluminum
- Housing Finish: Black Anodized
- Intermediate Rod: Hard-Chromed
- Valve Guide: Nitronic
- Actuator Rod Connection: Proprietary Swivel-Joint System
- Pressure Reference Ports: 1/8-Inch NPT
- Actuator Rod Options: Three Interchangeable Rods Included
- Spring Adjustment: GenV Locking Collar System
- Position Sensor: Not Included
- Optional Sensor Version: TS-0620-4014
- Vehicle Fitment: Universal, Based on Compatible BorgWarner EFR Turbocharger
- UPC: 9329677022490
True Twin Port Boost Control
The GenV Twin Port actuator is designed to provide more advanced boost control than conventional single-port internal wastegate actuators.
Traditional actuators generally use pressure applied to one side of a diaphragm to overcome the internal spring and open the wastegate.
The GenV Twin Port design allows pressure to be controlled on both sides of the diaphragm.
When connected to a compatible boost control system, this provides greater flexibility in controlling wastegate movement and turbocharger boost pressure.
This design is particularly beneficial for applications requiring precise boost control, adjustable torque delivery, and improved traction management.
BorgWarner EFR Turbocharger Compatibility
The TS-0620-4012 is specifically engineered for BorgWarner EFR Series turbochargers.
Turbosmart includes three interchangeable actuator rods designed to accommodate compatible B1 and B2 frame turbochargers.
The actuator supports compatible single-scroll and twin-scroll configurations.
The supplied hardware allows the actuator to be adapted to different EFR turbocharger arrangements without purchasing a separate actuator for each configuration.
Important: The turbocharger must be equipped with a compatible internal wastegate assembly. Verify the exact EFR turbocharger configuration before ordering.
14 PSI Preinstalled Spring
The TS-0620-4012 is supplied with a nominal 14 PSI spring preinstalled.
This provides the actuator's initial mechanical base pressure configuration.
Actual boost pressure may vary depending on actuator preload, turbocharger characteristics, exhaust backpressure, and boost control plumbing.
The spring configuration should be selected according to the engine's intended boost pressure and tuning requirements.
Adjustable 5–26 PSI Spring Configurations
The GenV actuator supports multiple manufacturer-approved spring combinations.
Using the included springs, tuners can configure the actuator for different mechanical base pressure requirements.
The available configurations cover approximately 5 PSI to 26 PSI.
Spring selection should always follow Turbosmart's recommended spring combination chart.
Large Diaphragm Working Area
The GenV IWG features a large diaphragm working area designed to improve actuator response.
The increased working area allows pressure changes to influence actuator movement more effectively.
This helps provide precise wastegate control when used with a properly configured boost management system.
Proprietary Swivel-Joint Mechanism
The actuator incorporates Turbosmart's proprietary swivel-joint design.
This mechanism helps maintain linear movement of the actuator rod while reducing unwanted side loading.
Consistent actuator movement is important for predictable wastegate operation.
The swivel-joint system also supports reliable sealing of the lower actuator chamber.
Hard-Chromed Intermediate Rod
The GenV actuator features a hard-chromed intermediate rod.
The hard-chromed surface is designed to improve durability and reduce wear during repeated actuator movement.
This is particularly important in demanding turbocharger applications where the actuator cycles frequently.
Nitronic Valve Guide
The actuator incorporates a Nitronic guide designed for excellent resistance to wear and galling.
This component supports smooth actuator rod movement and long-term reliability.
GenV Locking Collar System
Turbosmart's GenV locking collar design allows convenient access to the internal spring assembly.
The included collar tool simplifies spring changes and servicing.
This allows the actuator's mechanical base pressure to be adjusted without replacing the complete actuator.
Electronic Boost Controller Compatibility
The TS-0620-4012 is designed to work with compatible electronic boost control systems.
A suitable controller can regulate pressure supplied to the upper and lower actuator chambers.
This allows more advanced boost control strategies than a conventional single-port actuator.
Proper plumbing and calibration are essential for safe operation.
Improved Boost Response
The GenV actuator is designed to improve wastegate response compared with conventional factory actuators.
Its large diaphragm area, precision rod assembly, and twin-port control capability help provide more consistent wastegate movement.
When properly configured, these features can support improved boost response and more stable boost pressure throughout the engine's operating range.
Torque and Traction Management
Twin-port boost control can be particularly beneficial in high-horsepower applications where traction is limited.
With a compatible engine management system, boost pressure can be adjusted to help manage torque delivery.
This is useful in drag racing, roll racing, and high-performance street applications.
Standard Cap vs. Position Sensor Version
Turbosmart offers two versions of the GenV Twin Port actuator for BorgWarner EFR turbochargers.
TS-0620-4012: Standard GenV Twin Port Internal Wastegate Actuator, 14 PSI.
TS-0620-4014: GenV Twin Port Internal Wastegate Actuator with Position Sensor Cap, 14 PSI.
The position sensor version provides additional actuator position monitoring capability for compatible engine management systems.
The TS-0620-4012 does not include the position sensor.
Common Reasons for Replacement
Upgrading the Factory EFR Wastegate Actuator: Provides improved boost control capabilities.
Adding Twin-Port Boost Control: Supports advanced dual-chamber boost management.
Increasing Tuning Flexibility: Allows multiple spring configurations.
Inconsistent Boost Pressure: Replaces an existing actuator that has been diagnosed as faulty.
Turbocharger Upgrades: Supports revised boost control requirements.
High-Horsepower Engine Builds: Provides advanced wastegate actuation for demanding applications.
Torque Management Improvements: Supports more precise boost delivery.
Drag Racing Applications: Allows advanced boost control strategies.
Roll Racing Applications: Supports consistent boost regulation at higher engine loads.
Damaged Existing Actuator: Replaces worn or malfunctioning actuator components.
BorgWarner EFR Turbo System Rebuilds: Provides a complete replacement actuator assembly.
Custom Performance Builds: Supports advanced boost control configurations.
Installation Notes
Verify Turbocharger Compatibility: Confirm that the turbocharger is a compatible BorgWarner EFR B1 or B2 model with an internal wastegate.
Review Turbosmart Instructions: Read the GenV Twin Port EFR actuator installation guide.
Allow the Turbocharger to Cool: Never service the actuator while surrounding components are hot.
Remove the Existing Actuator: Disconnect the pressure reference hose and actuator linkage.
Inspect the Wastegate Flapper: Confirm that the internal wastegate mechanism moves freely.
Select the Correct Actuator Rod: Use the supplied rod appropriate for the EFR turbocharger configuration.
Install the Swivel-Joint Assembly: Follow Turbosmart's recommended assembly procedure.
Position the Actuator: Install the actuator through the factory mounting bracket.
Secure the Actuator: Tighten the mounting hardware according to the manufacturer's specifications.
Connect the Wastegate Linkage: Attach the actuator rod to the internal wastegate lever.
Set Actuator Preload: Follow Turbosmart's specified preload procedure.
Verify Spring Configuration: Confirm that the installed 14 PSI spring is appropriate for the intended boost pressure.
Configure Twin-Port Plumbing: Connect the upper and lower actuator chambers according to the selected boost control strategy.
Install Reference Fittings: Use the appropriate 1/8-inch NPT fittings.
Seal Unused Ports: Install the supplied blanking plugs where required.
Protect Pressure Hoses: Keep hoses away from excessive exhaust heat and moving components.
Check Actuator Movement: Verify that the rod moves freely without binding.
Perform a Regulated Pressure Test: Confirm proper actuator response.
Check for Pressure Leaks: Inspect the fittings and actuator chambers.
Verify ECU Calibration: Ensure the engine management system is configured for the intended boost pressure.
Perform Controlled Boost Testing: Verify operation on a dynamometer or other appropriate controlled test setup.
Monitor Boost Pressure: Check for boost spikes, boost creep, or inconsistent regulation.
Reinspect After Initial Operation: Check the mounting hardware, actuator linkage, and pressure connections.
Important: Turbosmart recommends maintaining at least 100mm of clearance between the upper actuator housing and nearby heat sources. Incorrect actuator preload, spring selection, or boost control plumbing can cause uncontrolled boost pressure and engine damage. Professional installation and tuning are strongly recommended.
What's Included
(1) Turbosmart GenV Twin Port Internal Wastegate Actuator – BorgWarner EFR, 14 PSI, Black (TS-0620-4012)
(3) Interchangeable Actuator Rods for BorgWarner EFR Turbochargers
(1) Preinstalled 14 PSI Outer Spring
(1) Additional 5 PSI Inner Spring
(1) Additional 7 PSI Middle Spring
(2) 1/8-Inch NPT Hose Fittings
(4) 1/8-Inch NPT Blanking Plugs (One Preinstalled)
(1) IWG Actuator Locking Collar Tool
(1) Turbosmart Decal
Note: The TS-0620-4012 is the standard-cap version and does not include a Hall Effect position sensor. The complete BorgWarner EFR turbocharger, electronic boost controller, and additional pressure reference hoses are sold separately.
Upgrade your BorgWarner EFR turbocharger with the Turbosmart GenV Twin Port Internal Wastegate Actuator – 14 PSI, Black (TS-0620-4012), engineered to provide precise boost control, improved actuator response, and exceptional tuning flexibility.
Featuring true twin-port pressure control, a 14 PSI preinstalled spring, adjustable 5–26 PSI spring configurations, hard-chromed intermediate rod, Nitronic guide, proprietary swivel-joint mechanism, and interchangeable BorgWarner EFR actuator rods, this GenV actuator delivers the advanced engineering required for demanding turbocharger applications.
Whether building a turbocharged Honda K20/K24, upgrading an Acura RSX with a BorgWarner EFR turbocharger, or assembling a custom motorsport forced-induction system, the Turbosmart TS-0620-4012 provides reliable wastegate operation and the boost control flexibility needed to maximize your turbocharger setup.
| Part Number: | TS-0620-4012 |
| Brand: | Turbosmart |
| Color: | Black |
| Spring Pressure: | 14 psi |
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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