E-Shin TBI Fuel Injectors for 5.7L V8 GM — Set of 2, OEM-Style Flow & Matched Gaskets

E-Shin TBI fuel injectors (replace# TJ7 / 17111864) are a pair of throttle body injection injectors engineered to restore proper fuel atomization and OEM-style flow for 5.7L V8 GM vehicles.

These injectors are designed for older GM throttle-body injection (TBI) systems found on many Chevrolet, GMC, Buick, Cadillac, Oldsmobile and Isuzu models with the 5.7L V8. Built with precision electromagnetic coils, multiple spray holes, and high-temperature sealing materials, the set of two aims to match original equipment specifications for fit and function. The kit is supplied with matched gaskets and O-rings to help ensure a leak-free installation and consistent performance across both injectors.

Which vehicles will these injectors fit?

These E-Shin injectors are compatible with a long list of GM platforms that used the 5.7L V8 TBI layout between the late 1980s and mid-1990s. They cover many Chevrolet and GMC trucks, vans, and SUVs, plus specific Buick, Cadillac, Oldsmobile and Isuzu models.

• Chevy: Blazer, C/K1500–3500, Suburban, Caprice, G-series vans, Tahoe and select package vans (1987–1996 ranges depending on model).
• GMC: C/K1500–3500, Suburban, G-series vans, Jimmy, Yukon (1987–1995 ranges).
• Other: Buick Roadmaster/Commercial Chassis, Cadillac Brougham/Fleetwood, Oldsmobile Custom Cruiser, Isuzu NPR (specified years).

What are the key technical specifications and materials?

The injectors are manufactured to mirror OEM operating points and use durable components for reliable spray pattern and sealing. The electrical and flow characteristics are provided so you can confirm compatibility with your vehicle’s wiring and fuel system.

• Replace part numbers: TJ7, 17111864, 17112494, 19110538, 57202.
• Flow dynamics: Dynamic 130 ml/30s; Static 360 ml/30s at 100 kPa.
• Electrical resistance: 1.25 ± 0.05 Ω; Number of spray holes: 6.
• Seals and hardware: high-temp fluorocarbon O-rings and matched gasket kit included.

How will replacing these injectors affect engine behavior?

Replacing worn or clogged TBI injectors helps restore a fine, even fuel spray that supports proper air–fuel mixing. Improved atomization can reduce symptoms associated with fuel delivery degradation without making performance promises beyond restored correct operation.

• Helps reduce hard starting and rough idle caused by inconsistent spray patterns.
• Improves throttle response and steadier power delivery when atomization is restored.
• Combats carbon buildup by promoting more complete combustion when matched gaskets prevent leaks.

What comes in the package and is installation difficult?

The shipment includes a matched set of two TBI injectors plus a gasket/O-ring kit sized for throttle-body injection. Professional installation is recommended to ensure proper electrical connection, sealing, and fuel system safety.

• Included: 2x E-Shin TBI fuel injectors and a complete TBI gasket and O-ring set.
• Recommended: bench-check electrical resistance and leak-check after installation.
• Warranty: 1-year manufacturer coverage; contact E-Shin customer service for support.

Who is this for: Technicians, DIY mechanics and owners of older GM 5.7L V8 vehicles who need a direct-fit TBI injector swap to replace failing or worn injectors. This kit suits those restoring original fuel delivery characteristics on late-80s to mid-90s Chevrolet, GMC, Buick, Cadillac, Oldsmobile and select Isuzu models. If you require exact fitment, verify part numbers and vehicle year/model against the listed compatibility before purchase.