Keep your throttle body injection system running strong with Holley Pro-Jection TBI Replacement Parts—precision-engineered components designed specifically for Holley's early fuel injection systems. Whether you're maintaining a classic conversion or restoring drivability in your street machine, these parts ensure your system operates smoothly and reliably.

Originally introduced as one of the first aftermarket EFI solutions, Holley ProJection systems brought electronic fuel control to carbureted vehicles with simplicity and tunability. Over time, however, even the best systems need maintenance—and that's where Holley's dedicated replacement parts come in.

From sensors and throttle position modules to injectors and wiring harnesses, these components are designed to directly replace original Holley Pro Jection TBI system parts. No need for complicated retrofits or custom fabrication—each part is built for plug-and-play installation, ensuring compatibility and minimal downtime.

These Pro Jection parts are perfect for hot rodders, classic truck owners, or DIY tuners who still rely on Holley's trusted TBI setup to deliver reliable performance. Whether you're chasing drivability issues or proactively refreshing your fuel system, Holley gives you the right tools to keep your engine running at its best.

Backed by Holley's legacy of performance and innovation, these TBI replacement parts are crafted to OEM standards and beyond. Restore your system's performance, protect your investment, and enjoy the simplicity and dependability that Holley Pro-Jection was built on—now with the support of modern replacement solutions.