Halltech Systems Stinger Throttle Body Hump Hose - Hole in PCV Hose - PCV Fitting - No Notch (2005 - 2007 Chevrolet Corvette C6 LS2 Venom / 2014 - 2019 C7 Stingray / 2017 - 2019 Grand Sport / 2015 - 2019 Z06) - H-4X3.75-RHH
The Halltech Systems H-4X3.75-RHH Flex-Lock throttle body hump hose gives your Halltech intake a purpose-built 4-inch to 3.75-inch transition while providing a complete PCV-ready configuration. This version comes with the PCV hole in the hose and the PCV elbow fitting, while retaining the No Notch configuration specified for this setup. Halltech's Flex-Lock design goes beyond a basic silicone reducer by combining controlled flexibility with internal grip features designed to keep the intake and throttle body connection securely engaged.
The 3-inch-long H-4X3.75-RHH is mandrel-formed from seven-layer, Nomex-reinforced silicone with a nominal .142-inch wall thickness. Its compliant hump section accommodates engine movement and torque, while internal grip ridges at each end increase engagement with the intake bridge and throttle body. Halltech also includes two stainless steel hose clamps, giving you the hose, PCV fitting, and primary connection hardware in one configuration.
Specifications
- Manufacturer: Halltech Systems
- Part Number: H-4X3.75-RHH
- Product: Flex-Lock Reducing Throttle Body Hump Hose
- Intake-Side Inside Diameter: 4 inches
- Throttle Body-Side Inside Diameter: 3.75 inches
- Hose Length: 3 inches
- Nominal Hose Thickness: .142 inches
- Construction: Seven-layer Nomex-reinforced silicone
- Hose Design: Flexible hump section with internal grip ridges
- PCV Hole: Hole in PCV hose
- PCV Fitting: Included
- Notch: No notch
- Clamps: Two stainless steel hose clamps included
- Intake Connection: 4-inch Halltech Stinger-series intake bridge connection
- Throttle Body Connection: 3.75-inch inside diameter
Features
- Halltech Flex-Lock reducing throttle body hump hose
- Transitions from a 4-inch intake connection to a 3.75-inch throttle body connection
- PCV hole included in the hose for this configuration
- PCV elbow fitting included
- No notch in this configuration
- Seven-layer Nomex-reinforced silicone construction
- Compliant hump section provides controlled flexibility during engine movement
- Internal grip ridges increase engagement with the intake bridge and throttle body
- 3-inch overall hose length
- Nominal .142-inch hose thickness
- Includes two stainless steel hose clamps
Complete PCV-Ready Configuration
This H-4X3.75-RHH is configured with both the PCV hole and Halltech PCV elbow fitting, so the PCV provision does not have to be added separately. The hose itself is supplied with the required hole and the fitting is included with this version. This specific configuration does not include the optional notch.
Halltech Flex-Lock Design
The connection between the intake and throttle body has to remain secure while the engine moves under load. Halltech's Flex-Lock design addresses both requirements. The compliant hump section provides controlled flexibility as the engine moves and torques, while internal grip ridges at each end increase mechanical engagement with the throttle body and intake tube. The result is a connection designed to flex where movement is necessary while maintaining positive grip at both ends.
Seven-Layer Nomex-Reinforced Silicone
Halltech mandrel-forms the H-4X3.75-RHH using a seven-layer, Nomex-reinforced silicone construction. Combined with the nominal .142-inch wall thickness and flexible hump section, the reinforced design creates a purpose-built intake transition rather than relying on a basic straight silicone reducer.
4-Inch to 3.75-Inch Reducing Design
The intake side has a 4-inch inside diameter designed for Halltech Stinger-series intake bridges, while the throttle body side reduces to a 3.75-inch inside diameter. The transition is incorporated directly into the 3-inch-long hose, providing the required diameter change without stacking separate reducers and couplers.
Fitment
- 2005 Chevrolet Corvette C6 LS2 Venom
- 2006 Chevrolet Corvette C6 LS2 Venom
- 2007 Chevrolet Corvette C6 LS2 Venom
- 2014 Chevrolet Corvette C7 Stingray
- 2015 Chevrolet Corvette C7 Stingray
- 2016 Chevrolet Corvette C7 Stingray
- 2017 Chevrolet Corvette C7 Stingray
- 2018 Chevrolet Corvette C7 Stingray
- 2019 Chevrolet Corvette C7 Stingray
- 2017 Chevrolet Corvette C7 Grand Sport
- 2018 Chevrolet Corvette C7 Grand Sport
- 2019 Chevrolet Corvette C7 Grand Sport
- 2015 Chevrolet Corvette C7 Z06
- 2016 Chevrolet Corvette C7 Z06
- 2017 Chevrolet Corvette C7 Z06
- 2018 Chevrolet Corvette C7 Z06
- 2019 Chevrolet Corvette C7 Z06
FAQs
Does this H-4X3.75-RHH include both the PCV hole and PCV fitting?
Yes. This specific configuration comes with the PCV hole in the throttle body hose and includes the PCV elbow fitting. It is supplied without the optional notch.
What size connections does the Halltech H-4X3.75-RHH use?
The hose has a 4-inch inside diameter on the intake end and a 3.75-inch inside diameter on the throttle body end. It measures 3 inches long, has a nominal .142-inch wall thickness, and includes two stainless steel hose clamps.
Get Your Halltech Flex-Lock Hump Hose from Beefcake Racing
Get the Halltech H-4X3.75-RHH Flex-Lock throttle body hump hose with the PCV hole and fitting already configured for your setup from Beefcake Racing. For help with Halltech intake components or configuration questions, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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