Best Seller
Fuel Injectors
Set of 8 LS1/LS6 EV1 Style Injectors
LS1 • LS6 • LT1
Flow Matched
E85 Compatible
Tested
★★★★★ (1,248)
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Built. Tested. Trusted.
Fuel Injectors &
Wiring Harnesses
Built For Serious Performance.
Flow-tested fuel injectors, standalone swap harnesses, and performance wiring solutions for LS, Coyote, HEMI, boosted, and E85 builds.
Shop By Category
Find The Right Parts For Your Build
From fuel to wiring and everything in between — HPI has the performance parts you need.
Fuel Injectors
High-flow, flow-tested injectors for street, boost, and E85 builds.
- E85 Compatible
- Flow Matched
- Tested Before Shipping
- Bosch-Based Designs
Wiring Harnesses
Standalone harnesses for LS, Coyote, and HEMI engine swaps.
- Plug & Play
- Clean, Labeled & Tested
- Built In-House
- Race Proven
Injector Cleaning
Professional cleaning services to restore injector performance.
- Professional Cleaning
- Flow Testing
- Before & After Results
- Fast Turnaround
Swap Components
Adapters, connectors, brackets, and more to complete your build.
- High Quality Parts
- Engine & Trans Solutions
- Made In The USA
- In Stock & Ready To Ship
Why Builders Choose HPI
Tested. Trusted. Built For Performance.
Every HPI product is engineered, tested, and built to help you finish your build with confidence.
Tested Before Shipping
Every injector is tested for leak-down, spray pattern, flow rate, and consistency before it leaves our shop.
Leak-Down Tested
Flow Rate Tested
Spray Pattern Verified
Matched For Consistency
Built For E85
HPI injectors are designed for ethanol-based fuels and high-performance applications where fuel delivery matters.
E85 Compatible
High Ethanol Rated
Corrosion Resistant
Ready For Boost
Matched For Performance
Flow-matched injector sets help improve cylinder-to-cylinder consistency, drivability, power delivery, and tuning.
Flow Matched Sets
Better Performance
Improved Drivability
Easier Tuning
Race Proven
Used by builders, tuners, and racers nationwide.
Technical Support
Real help from people who understand performance builds.
Fast Shipping
Most orders ship quickly so your build keeps moving.
Built In The USA
Designed, tested, and assembled with quality in mind.
Quality You Can Trust
Premium parts, verified performance, no shortcuts.
Shop By Engine Platform
Built For The Engines You Trust
Find the right injectors, harnesses, and components for your platform.
LS Platform
LS1 • LS2 • LS3 • LS6 • LS7 • LQ4 • LQ9
- Fuel Injectors
- Wiring Harnesses
- Adapters & Accessories
Ford Coyote
Gen 1 • Gen 2 • Gen 3
- Gen 1 Harnesses
- Gen 2 Harnesses
- Gen 3 Harnesses
- Injectors & Components
HEMI Platform
5.7L • 6.1L • 6.4L • 6.2L
- Standalone Harnesses
- Transmission Solutions
- Injectors & Components
- Adapters & Accessories
Corvette
C5 • C6 • C7 • C8
- Wheel Hop Braces
- Performance Upgrades
- Brackets & Accessories
- Driveline Solutions
Platform Specific
Parts engineered for fit, function, and performance.
Easy Install
Designed to install cleanly with less guesswork.
Race Proven
Trusted by builders, tuners, and racers.
Expert Support
Get help from people who know performance builds.
In Stock & Ready
Most orders ship quickly so your project keeps moving.
Trusted By Builders. Proven On The Track.
Our Best Sellers
Top-rated injectors, harnesses, and components chosen by performance enthusiasts.
Best Seller
Wiring Harnesses
LS Standalone Wiring Harness
4.8L • 5.3L • 6.0L • 6.2L
Plug & Play
Race Proven
In-House Built
★★★★★ (892)
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Best Seller
Fuel Injectors
1700CC HPI Injectors EV14 High Impedance
Boosted • E85 • High HP
High Flow
E85 Compatible
ASNU Tested
★★★★★ (643)
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Best Seller
Wiring Harnesses
Coyote Gen 3 Standalone Harness
5.0L Coyote Gen 3
Plug & Play
OEM Connectors
In-House Built
★★★★★ (521)
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Service
Professional Injector Cleaning
Restore Performance
Flow Tested
Before & After
Fast Turnaround
★★★★★ (417)
Learn More →
Builder Approved
Used by racers and performance enthusiasts nationwide.
Race Proven
Proven performance on the street, strip, and track.
Quality Guaranteed
Every product is tested, verified, and backed by HPI.
Fast Shipping
Most orders ship fast so your build keeps moving.
Real Builds Powered By HPI
Street Builds. Track Cars. Serious Performance.
From weekend swaps to boosted race builds, HPI parts are trusted by builders who demand performance.
LS Swap
Clean Fuel Delivery For LS Builds
Fuel injectors, harnesses, and swap-ready components.
Coyote Platform
Standalone Wiring For Modern Swaps
Gen 1, Gen 2, and Gen 3 Coyote swap solutions.
Boosted Build
Fuel Support For Serious Horsepower
High-flow injectors for turbo, blower, and E85 setups.
“The injectors were clean, matched, and ready to tune.”
— Performance Builder
“The harness made the swap easier and saved hours.”
— Engine Swap Customer
“Fast shipping, solid support, and parts that work.”
— HPI Customer
Our Video Gallery
HPInjectors: BEST SELLERS
Blog
What Fuel Pressure Should an LS Run? Complete Guide for Stock, Turbo & E85 Builds
Learn the correct LS fuel pressure for stock, turbo, supercharged, and E85 builds. Understand 43.5 vs 58 PSI, boost-referenced pressure, injectors, and common fuel-pressure problems.