S366/74 T-3 .80 WASTEGATED
🔥 S366/74 T3 .80 Wastegated Turbo – High-Performance Street Turbo for 650–750+ HP Builds
The S366/74 T3 .80 Wastegated Turbo is the perfect upgrade for diesel enthusiasts seeking strong top-end power without sacrificing drivability. With flow capabilities of 650–700+ HP—and up to 750+ HP with the optional billet wheel—this turbo delivers hard-hitting boost, fast spool-up, and dependable power for daily-driven street trucks or competition setups.
Designed with a T3 mounting flange and a .80 A/R twin-scroll turbine housing, this turbo is ideal for 2nd Gen Cummins and other compatible diesel builds. The integrated wastegate ensures smooth, predictable boost control under heavy throttle, while the optional billet wheel upgrade reduces lag and enhances airflow for even greater output.
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⚙️ Key Features:
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66mm Compressor / 74mm Turbine Wheel – Balanced for both drivability and high-end power
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T3 Flange – Direct bolt-on for 2nd Gen Cummins and other T3 manifold setups
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.80 A/R Wastegated Twin-Scroll Housing – Provides fast spool and strong top-end flow
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Supports 650–700+ HP with cast wheel; 750+ HP with billet wheel upgrade
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Optional Billet Compressor Wheel – Faster spool, increased efficiency, cooler EGTs
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Streetable & Reliable – Perfect for performance-driven daily drivers
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Integrated Wastegate – Ensures consistent boost control under all conditions
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✅ Ideal For:
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2nd Gen 5.9L Cummins builds
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Hot street trucks and street/strip setups
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Performance diesel enthusiasts who want power without giving up throttle response
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Mild to moderate competition applications
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📦 What’s Included:
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S366/74 T3 .80 Wastegated Turbocharger
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Adjustable wastegate actuator
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Full turbo install gasket kit
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Optional billet wheel (select before checkout)
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🛒 Upgrade today with the S366/74 .80 T3 Wastegated Turbo for serious power, smooth drivability, and reliable boost control—whether you're towing, racing, or daily driving. Join the 5Blade Mafia™ and feel the difference in power and precision.
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S366/74 T-3 .80 WASTEGATED
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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.