Performance Injectors For 2019-2021 6.7L Cummins
Performance Injectors For 2019-2021 6.7L Cummins
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2019–2021 6.7L Cummins Performance Injectors – 30% / 50% / 100% Over
These performance injectors for the 2019–2021 6.7L Cummins are engineered to support increased horsepower, torque, and throttle response while maintaining precise fuel control. Available in 30% over, 50% over, and 100% over, they are designed for everything from tow-friendly street builds to high-horsepower performance applications.
Each injector set is flow-matched and calibrated to deliver consistent spray pattern and atomization, ensuring clean combustion, reduced EGTs (when properly tuned), and long-term reliability. These injectors are a critical upgrade for trucks running larger turbos, custom tuning, or demanding workloads.
Injector Size Breakdown
30% Over Injectors
Ideal for daily-driven and tow-focused trucks. These injectors offer improved throttle response and moderate horsepower gains while retaining excellent drivability and fuel efficiency when paired with proper tuning. Works well with stock or mild turbo upgrades.
50% Over Injectors
A strong all-around upgrade for street performance and towing. These injectors support upgraded turbos and more aggressive tuning while maintaining reliable manners for daily use. A popular choice for balanced power builds.
100% Over Injectors
Designed for high-horsepower applications only. These injectors support large single or compound turbo setups and aggressive tuning strategies. Proper supporting modifications are required, and these are recommended for performance-focused trucks rather than daily towing setups.
Features & Benefits
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Increased fuel flow for higher horsepower potential
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Precision-matched for consistent cylinder-to-cylinder fueling
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Improved throttle response and power delivery
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Compatible with aftermarket tuning and turbo upgrades
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Built to handle high fuel pressure and modern common-rail demands
Recommended Supporting Mods
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Custom tuning (required)
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Upgraded turbocharger
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Lift pump / fuel system upgrades
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Head studs (strongly recommended for 50%+ builds)
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FAQ
How long does shipping take?
Most products ship in 3–7 days. Some will take longer. If a product needs more time, it will say so on its product page.
How do I know if a product fits my truck?
Each product page lists the year, make, and model it fits.
If you’re unsure, you can message us through our website, email, or Facebook, and we’ll confirm fitment for you.
Do you offer installation?
Yes. PSC Automotive & Diesel Repair installs everything we sell.
Call or message us to schedule an appointment.
What is your return policy?
- Returns accepted on new, unused items.
Some items are subject to a restocking fee, depending on the manufacturer.
Electrical parts, tuners, and custom-built items are non-returnable.
Full details are on our Refunds page.
What is your warranty policy?
Our warranty matches the manufacturer’s warranty.
If a part fails or has a defect, we will work with the manufacturer to get it replaced.
We do not warranty parts that were:
Installed incorrectly
Damaged by lack of maintenance
Removed or messed with after installation
Installed by another shop after we installed it
Full warranty details are on our Warranty page.
Will I get tracking information?
Yes. Tracking is emailed to you as soon as your order ships.
Check your spam folder if you don’t see it.
Do you offer customer support?
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We reply quickly during business hours.