3.50" - 3.50" X 4.00" LENGTH STRAIGHT
🔥 3.50" ID x 4.00" Long Straight Silicone Coupler – 5-Ply Reinforced, High-Temp Boot for Diesel Boost Applications
This 3.50" ID x 4.00" long straight silicone coupler is engineered for high-performance diesel and turbocharged applications. Constructed from 5-ply reinforced high-temperature silicone, it’s strength-tested to handle the extreme pressures, heat, and vibration found in high-boost intake and intercooler systems.
Ideal for connecting intercooler piping, intake manifolds, or turbocharger outlets, this coupler provides a durable, flexible, and leak-free solution trusted by performance builders and diesel enthusiasts alike.
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🔧 Key Features:
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Inside Diameter: 3.50"
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Length: 4.00"
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5-ply reinforced high-temp silicone construction
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Strength-tested for high-boost diesel and racing applications
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Withstands elevated temperatures, oil, and vibration
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Smooth internal finish for optimal airflow and easy installation
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Ideal for turbocharger systems, intercoolers, charge-air plumbing, and custom piping setups
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📦 What’s Included:
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1x 3.50" ID x 4.00" Straight Silicone Coupler Boot (Black)
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Whether you're building a compound turbo system or upgrading your charge-air connections, this straight silicone coupler offers the durability and reliability you need for boost-ready performance.
Pairs well with
Ships within 1-2 business days.
Free shipping & returns
3.50" - 3.50" X 4.00" LENGTH STRAIGHT
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.