GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Satin
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Satin
SKU: SKU: 81141
In stock

Product Details
Features
- Throttle-body airflow design supports dependable throttle response and properly matched EFI airflow characteristics.
- Aluminum elbow construction with satin finish helps position the throttle body while maintaining clean engine-bay fitment.
- Performance and Yes provisions should be planned around sensor routing and accessory clearance.
- Commonly used in Chevrolet Silverado, GMC Sierra, and Chevrolet Camaro LS applications; verify intake and ECU compatibility before installation.
Description
Designed for GM LS fuel injection applications, this throttle body elbow helps adapt EFI throttle body placement to 4150-style intake layouts while supporting clean airflow routing.
Throttle Body Adapter Fitment
Main port inside diameter is 104 mm. Intake manifold flange style is 4150 Square Bore. Height is listed as 5.120 in.. These dimensions should be checked against hood clearance and throttle body placement.
Elbow Construction & Layout
Aluminum construction with a satin finish and throttle cable bracket included: Yes. The elbow helps create a clean transition between intake manifold and throttle body.
Sensor / Port Provisions
MAP sensor port included: Yes. Vacuum ports included: Performance. Nitrous port provision: Yes mm. Plan sensor placement, vacuum routing, and accessory clearance before installation.
Installation & Clearance Matching
Common use cases include Chevrolet Silverado, GMC Sierra, Chevrolet Camaro. Verify throttle body size, 4150 flange compatibility, cable bracket needs, and hood clearance before final assembly.
Specs
| Color | Satin |
| Fuel System Type | Electronic Fuel Injection |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Height | 5.120 in. |
| Intake Manifold Flange Style | 4150 Square Bore |
| Main Port Inside Diameter | 104 mm |
| Manifold Absolute Pressure Sensor Port Included | Yes |
| Material | Aluminum |
| Meth Injection/Boost Reference Port Thread Size | (2) 0.125 in. NPT |
| Meth Injection/Boost Reference Ports Included | Yes |
| Mounting Hardware Included | Yes in. |
| Mounting Hole Quantity | 4 |
| Nitrous Port Included | Yes mm |
| Nitrous Port Thread Size | 0.0625 in. NPT |
| Port Plugs Included | Yes |
| Port Quantity | 1 |
| Quantity | Sold individually |
| Throttle Body Bore Size | 104 mm |
| Throttle Cable Bracket Included | Yes |
| Vacuum Port Thread Sizes | (1) 0.375, (2) 0.250 in. NPT |
| Vacuum Ports Included | Performance |
Engine Fitment
COMPATIBLE WITH
CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED)
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3
• 6.2 L / 376 in3
NOTES
• Fits intake with Holley 4150 carburetor flange
• 105 mm throttle body opening with stock 4-bolt pattern
COMMON VEHICLE APPLICATIONS:
Chevrolet Silverado
GMC Sierra
Chevrolet Camaro
Chevrolet Corvette
Q&A
What applications is this throttle body compatible with?
This throttle body is designed for CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED).
Will this throttle body fit GM LS applications?
Yes, this throttle body is designed for compatible GM LS-based applications and should be matched to the correct intake and electronics.
What size throttle body is this?
This throttle body features a 104 mm bore size, which can affect airflow capacity and overall engine performance.
Do I need to verify flange compatibility before installation?
Yes, flange pattern and sealing surface compatibility should always be confirmed before installation.
What type of throttle body is this?
This is a performance throttle body designed for electronic fuel injection applications.
Will this throttle body help improve throttle response?
Yes, a properly matched performance throttle body can help improve airflow response and throttle feel compared to a more restrictive stock-style unit.
Do I need to match the throttle actuation style to my setup?
Yes, throttle actuation style must match the intended control setup for proper operation and installation.
Do I need to verify sensor compatibility before installation?
Yes, throttle body sensor and connector compatibility should always be confirmed against your engine management system.
Does this throttle body include a MAP sensor port?
Yes, this throttle body includes a MAP sensor port provision to support compatible engine management setups.
Do I need additional parts for installation?
Depending on your setup, you may need a gasket, hardware, adapters, or tuning support during installation.
Is this throttle body a good upgrade from stock?
Yes, this throttle body is a strong upgrade for compatible applications that need improved airflow, better throttle response, and performance-oriented fit and finish.
Will this throttle body help support added airflow demand?
Yes, a properly matched performance throttle body can help support engines with intake, camshaft, cylinder head, or forced induction upgrades that demand more airflow.
Do I need tuning after installing a throttle body?
Depending on the application and the size change, tuning may be recommended to get the best drivability and performance results.
Does the satin finish affect performance?
No, the satin finish is cosmetic and does not change throttle body performance—it provides a clean understated look.
Does the satin finish require much maintenance?
The satin finish is relatively easy to maintain and usually only needs routine cleaning to keep it looking good.
Emissions Notice
This thing is awesome
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Satin
Designed for GM LS fuel injection applications, this throttle body elbow helps adapt EFI throttle body placement to 4150-style intake layouts while supporting clean airflow routing.
Throttle Body Adapter Fitment
Main port inside diameter is 104 mm. Intake manifold flange style is 4150 Square Bore. Height is listed as 5.120 in.. These dimensions should be checked against hood clearance and throttle body placement.
Elbow Construction & Layout
Aluminum construction with a satin finish and throttle cable bracket included: Yes. The elbow helps create a clean transition between intake manifold and throttle body.
Sensor / Port Provisions
MAP sensor port included: Yes. Vacuum ports included: Performance. Nitrous port provision: Yes mm. Plan sensor placement, vacuum routing, and accessory clearance before installation.
Installation & Clearance Matching
Common use cases include Chevrolet Silverado, GMC Sierra, Chevrolet Camaro. Verify throttle body size, 4150 flange compatibility, cable bracket needs, and hood clearance before final assembly.
CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED)
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3
• 6.2 L / 376 in3
NOTES:
• Fits intake with Holley 4150 carburetor flange
• 105 mm throttle body opening with stock 4-bolt pattern
COMMON VEHICLE APPLICATIONS:
Chevrolet Silverado
GMC Sierra
Chevrolet Camaro
Chevrolet Corvette
SPECIFICATIONS:
Color: Satin
Fuel System Type: Electronic Fuel Injection
Gasket Or Seal Included: No
Grade Type: Performance
Height: 5.120 in.
Intake Manifold Flange Style: 4150 Square Bore
Main Port Inside Diameter: 104 mm
Manifold Absolute Pressure Sensor Port Included: Yes
Material: Aluminum
Meth Injection/Boost Reference Port Thread Size: (2) 0.125 in. NPT
Meth Injection/Boost Reference Ports Included: Yes
Mounting Hardware Included: Yes in.
Mounting Hole Quantity: 4
Nitrous Port Included: Yes mm
Nitrous Port Thread Size: 0.0625 in. NPT
Port Plugs Included: Yes
Port Quantity: 1
Quantity: Sold individually
Throttle Body Bore Size: 104 mm
Throttle Cable Bracket Included: Yes
Vacuum Port Thread Sizes: (1) 0.375, (2) 0.250 in. NPT
Vacuum Ports Included: Performance