Upgrade Your Vortec 454 – Replace Problematic Rochester Multec Injectors

Suffering from poor performance with the stock Rochester Multec fuel injectors?

We get it. Poor idle, weak throttle response, and mysterious misfires are common symptoms of these aging injectors. That's why we offer a full set of 8 Genuine Bosch 4 Hole Fuel Injectors—fully tested, serviced, and upgraded for lasting performance.

✔️ Genuine Bosch 4 Hole Upgrades — not counterfeit replicas!

✔️ Professionally serviced on industry-leading ASNU test benches.

✔️ Includes new O-rings, filters, spacers, and pintle caps installed.

✔️ Fully flow-matched in sets of 2% or better for optimal drivability.

✔️ Lifetime warranty against electrical failures or manufacturing defects.

Why Replace the Rochester Multec Injectors?

Original Rochester Multec injectors are prone to internal shorts, poor spray atomization, leaking and stuck nozzles as they age. This can cause:

• Rough idle and misfires
• Fuel economy loss
• Hard starts
• Potential catalytic converter damage

Watch our real ASNU test bench footage showing the common failures with original Rochester injectors:

OEM Cross Reference Numbers

#17109596, #17113221, #19244615, #217303, and more.

Fitment

This upgraded injector set fits a wide range of GM 7.4L 454CID V8 applications from 1996–2000, including:

• Chevrolet C2500, C3500, Express 3500 Van, Suburban
• GMC C2500 Sierra, C3500 Sierra, Savana 3500 Van, Suburban
• K2500, K3500, B7 Bus, Kodiak, Topkick, P30 Chassis models

And many others—see full fitment chart below.

✅ Upgrade Today for Smooth Performance

Stop struggling with inconsistent fuel delivery and unreliable starting. Upgrade your injectors today and experience the smoother idle, better throttle response, and peace of mind that your big block deserves.

Precision Auto Injectors – We Build It Right The First Time.