TURTS-199-3037 is a 90-degree elbow 3.00-inch turbo compressor outlet adapter from the Turbosmart LockSleeve series, engineered specifically for Turbosmart B Frame and C Frame turbocharger compressor covers with a 3.00-inch outlet. Dual-compatible with both the Vibrant HD Clamp and Plazmaclamp (each sold separately), this billet aluminum ferrule assembly is rated to 150 PSI and delivers a weld-free, mechanically interlocked boost seal through a precision-machined screw-together collar system. This is a Race Only product intended for closed-course competition use only and is not legal for use on pollution-controlled vehicles in California.
LockSleeve Technology: How the Ferrule System Works
The Turbosmart LockSleeve system replaces traditional welded or clamped silicone couplers with a precision-machined billet aluminum ferrule assembly. Two collar halves thread together around the compressor outlet and the intercooler or charge pipe, compressing an internal O-ring to form a mechanically interlocked, boost-rated seal. The result is a connection that resists blow-off under sustained boost pressure up to 150 PSI without any welding, heat, or permanent modification to the compressor cover.
The 90-degree elbow geometry routes the charge pipe at a right angle directly off the turbo, reducing the need for additional bends in tight engine bays. Because the ferrule threads together under mechanical load rather than relying on clamp friction alone, the LockSleeve design maintains sealing integrity under repeated thermal cycling and high-vibration racing environments. The billet aluminum construction keeps weight low while delivering the dimensional accuracy needed to hold consistent O-ring preload across the full 3.00-inch outlet.
Compatibility
This adapter is designed to fit Turbosmart B Frame and C Frame turbocharger compressor covers with a 3.00-inch compressor outlet only. It is not compatible with Garrett, Precision Turbo, or Borg Warner turbochargers.
- Compatible: Turbosmart B Frame turbocharger (3.00-inch compressor outlet)
- Compatible: Turbosmart C Frame turbocharger (3.00-inch compressor outlet)
- Not compatible: Garrett turbochargers
- Not compatible: Precision Turbo turbochargers
- Not compatible: Borg Warner turbochargers
Clamp sold separately. This adapter is dual-compatible with the Vibrant HD Clamp and the Plazmaclamp (Plazmaman clamp). Neither clamp is included with this product.
What's Included
- 1x LockSleeve ferrule assembly (two precision-machined billet aluminum collar halves with internal O-ring)
Vibrant HD Clamp and Plazmaclamp / Plazmaman clamp are not included and must be purchased separately.
Full Specifications
| Specification |
Detail |
| Part Number |
TURTS-199-3037 |
| UPC |
9329677035438 |
| Outlet Diameter |
3.00 inches (both ends) |
| Elbow Angle |
90 degrees |
| Connection Type |
Vibrant HD Clamp or Plazmaclamp / Plazmaman Clamp (each sold separately) |
| Material |
Billet aluminum, precision-machined |
| Seal Type |
Internal O-ring, mechanically interlocked ferrule |
| Max Pressure |
150 PSI |
| Compatible Turbos |
Turbosmart B Frame, Turbosmart C Frame (3.00-inch compressor outlet) |
| Country of Origin |
Australia |
| Warranty |
1-Year Limited (defects in material and workmanship; authorized dealers only; correct installation required) |
| CARB / Emissions |
No CARB EO number. Race Only. Not legal for use on California pollution-controlled vehicles. |
LockSleeve Series: Sibling Variants
This 3.00-inch 90-degree elbow is the largest and highest-priced configuration in the Turbosmart LockSleeve lineup. The series also includes smaller and straight-angle configurations:
-
2.50-inch, straight (0-degree) versions for Turbosmart B Frame and C Frame turbos with a 2.50-inch compressor outlet where the charge pipe runs in line with the turbo outlet
-
2.50-inch, 90-degree elbow versions for the same 2.50-inch outlet turbos where the piping exits at a right angle
If your Turbosmart turbo has a 2.50-inch compressor outlet rather than 3.00 inches, see the 2.50-inch LockSleeve models. The 3.00-inch outlet is the largest size in the current LockSleeve range, and this 90-degree elbow is the only 3.00-inch 90-degree option. All LockSleeve models share the same core ferrule technology and 150 PSI pressure rating.
Race Only Use and CARB / California Notice
This product has no CARB Executive Order (EO) number and is intended exclusively for closed-course competition use sanctioned by a recognized racing organization. It is not legal for use on pollution-controlled vehicles operated on public roads in California or in any jurisdiction that enforces California emissions regulations. Installation on a street-driven vehicle may violate federal and state emissions laws. The purchaser and installer assume full responsibility for compliance with all applicable regulations.
Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Frequently Asked Questions
What turbos is TURTS-199-3037 compatible with?
This adapter fits Turbosmart B Frame and C Frame turbochargers with a 3.00-inch compressor outlet. It is not compatible with Garrett, Precision Turbo, or Borg Warner turbochargers.
Does the 3.00-inch 90-degree LockSleeve adapter require welding?
No. The LockSleeve system uses a screw-together billet aluminum ferrule with an internal O-ring to create a boost-rated, mechanically interlocked seal. No welding is required at any point in the installation.
What clamps work with the 3.00-inch 90-degree LockSleeve elbow?
This model is dual-compatible with both the Vibrant HD Clamp and the Plazmaclamp (Plazmaman clamp). Neither clamp is included; each must be purchased separately. This dual-clamp compatibility makes the 3.00-inch 90-degree LockSleeve more flexible for builders who already use one of those clamp systems.
What is the difference between the 2.50-inch and 3.00-inch LockSleeve models?
The 2.50-inch LockSleeve models fit Turbosmart B Frame and C Frame turbos with a 2.50-inch compressor outlet. This 3.00-inch model is specifically for the same turbo families with a 3.00-inch compressor outlet. Always verify your turbo's compressor outlet diameter before ordering. The 3.00-inch models are priced higher than the 2.50-inch straight variants.
Is the 3.00-inch 90-degree LockSleeve the largest in the series?
Yes. The 3.00-inch 90-degree elbow is the largest outlet diameter and the highest-priced SKU currently offered in the Turbosmart LockSleeve range.
How much boost pressure can the LockSleeve 3.00-inch 90-degree adapter handle?
The LockSleeve series, including the 3.00-inch 90-degree elbow, is rated to a maximum of 150 PSI.
Can I use the 3.00-inch LockSleeve 90-degree adapter on the street?
No. This is a Race Only product with no CARB EO number. It is intended for closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads, including in California.
Why choose a 90-degree LockSleeve elbow over a straight adapter?
The 90-degree elbow routes the charge pipe at a right angle directly off the turbo compressor outlet, which is useful in tight engine bays where a straight pipe run is not possible. If the charge pipe exits inline with the compressor cover, use the straight adapter. If it needs to turn 90 degrees immediately, use the 90-degree elbow version.
Is the Turbosmart LockSleeve 3.00-inch adapter made from cast or billet aluminum?
Billet aluminum only. Both collar halves of the ferrule assembly are precision-machined from billet aluminum to maintain tight tolerances for consistent O-ring sealing performance.
Where is the Turbosmart LockSleeve made?
The Turbosmart LockSleeve series, including this 3.00-inch 90-degree elbow adapter, is manufactured in Australia.
What warranty does the Turbosmart LockSleeve carry?
Turbosmart provides a 1-Year Limited Warranty covering defects in material and workmanship under regular use and correct installation, when purchased through an authorized dealer.
