Halltech Systems Stinger Throttle Body Hump Hose - Hole in PCV Hose - No 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 the correct 4-inch to 3.75-inch transition while adding the PCV hole required for this configuration. Rather than using a basic silicone reducer, Halltech engineered its Flex-Lock design to combine controlled movement with a more positive mechanical grip at both ends. The flexible hump section accommodates engine movement and torque while internal grip ridges increase engagement with the intake bridge and throttle body.
This version is ordered with the PCV hole in the throttle body hose, no PCV elbow fitting, and no notch. The 3-inch-long hose uses Halltech's seven-layer, Nomex-reinforced silicone construction with a nominal .142-inch wall thickness. Two stainless steel hose clamps are included, giving you the primary hardware needed to secure the hose at the intake and throttle body connections.
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: Not 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 hump hose design
- Transitions from a 4-inch intake connection to a 3.75-inch throttle body connection
- PCV hole included in the throttle body hose for this configuration
- No PCV elbow fitting included
- No notch in this configuration
- Seven-layer Nomex-reinforced silicone construction
- Compliant hump section provides controlled flexibility as the engine moves under load
- Internal grip ridges increase engagement at both hose connections
- 3-inch overall hose length
- Nominal .142-inch hose thickness
- Includes two stainless steel hose clamps
PCV-Ready Hose Configuration
This version of the H-4X3.75-RHH is manufactured with the PCV hole already added to the throttle body hose. The PCV elbow fitting is not included with this configuration, making it the right choice when the hose needs PCV capability but the fitting itself is not required as part of the purchase.
Halltech Flex-Lock Design
Engine movement puts continuous stress on the connection between an intake bridge and throttle body. Halltech's Flex-Lock design tackles that problem from both directions. The compliant hump section allows the hose to flex as the engine moves and torques, while internal grip ridges at each end increase engagement with the intake tube and throttle body. The result is a transition hose designed to move where necessary while maintaining a secure connection where it matters.
Seven-Layer Reinforced Silicone Construction
The H-4X3.75-RHH is mandrel-formed using seven-layer, Nomex-reinforced silicone construction. Combined with the .142-inch nominal wall thickness and engineered hump section, this construction gives the hose the flexibility required at the throttle body connection without reducing it to a simple straight silicone coupler.
4-Inch to 3.75-Inch Reducing Design
The intake end has a 4-inch inside diameter designed for Halltech Stinger-series intake bridges, while the throttle body end reduces to a 3.75-inch inside diameter. This purpose-built transition keeps the connection straightforward and eliminates the need to stack separate couplers or reducers to bridge the two diameters.
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 Halltech H-4X3.75-RHH already have the PCV hole?
Yes. This specific configuration is ordered with the PCV hole in the throttle body hose. It does not include the PCV elbow fitting and is configured without a notch.
What size connections does the H-4X3.75-RHH use?
The hose has a 4-inch inside diameter at the intake end and a 3.75-inch inside diameter at 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 correct Halltech H-4X3.75-RHH Flex-Lock hump hose configuration for your intake setup from Beefcake Racing. For help with your Halltech intake or PCV configuration, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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