GM GENUINE PARTS Fuel Injector O-Ring Kit 217-1588 (Assorted Sizes) — OE-fit, fuel-resistant seals

GM Genuine Parts 217-1588 (12587147) Fuel Injector O-Ring Kit provides a set of assorted injector seals engineered to restore liquid-tight connections and OE fit for GM fuel systems.

This kit contains a selection of fuel injector O-rings produced to General Motors' specifications and validated as genuine OE components. Each seal is designed and tested to meet the tolerances and material standards used during vehicle assembly, so installers and technicians can replace worn or damaged injector seals with parts that match original fit, form, and function. The parts are intended to reduce fuel leaks, preserve injector seating, and maintain proper fuel system sealing where injectors interface with rails, bores, and fittings.

What does this O-ring kit include and why are the seals important?

The 217-1588 kit supplies assorted sizes and cross-sections of O-rings commonly used on GM fuel injectors and associated fittings. Proper O-rings prevent fuel seepage, maintain fuel pressure, and keep contaminants out of injector bores.

• Assorted diameters and thicknesses for injector tips, rails, and connectors
• Materials selected for resistance to fuel, heat, and engine chemicals
• OEM-spec dimensions for correct seating and compression

How do I know these are compatible with my GM vehicle?

GM Genuine Parts are manufactured or validated to the same specifications used in GM assembly plants. Compatibility depends on engine family and model year; cross-referenced part numbers and GM service literature help confirm fitment.

• Part number: 217-1588 (12587147) for accurate identification
• Designed to replace original factory injector seals in specified GM applications
• Check vehicle service manual or parts catalog for exact match

What are the advantages of using GM Genuine Parts O-rings over aftermarket seals?

Choosing GM Genuine Parts helps ensure the seals meet the same material and dimensional standards as the original components. That reduces the risk of improper fit, premature degradation, or fuel leaks that can follow poorly matched replacement rings.

• Manufactured to GM OE specifications for consistent performance
• Backed by General Motors engineering and validation processes
• Quality control minimizes variability between individual seals

How should these O-rings be installed and maintained?

Installers should replace O-rings whenever injectors are removed or when any seal shows wear, cracking, or deformation. Proper lubrication with OEM-recommended lubricant and careful seating prevent nicking and ensure an even seal compression.

• Replace all related seals during injector service to avoid future leaks
• Use a thin coat of compatible lubricant to ease installation
• Inspect mating surfaces and replace damaged injectors or retainers as needed

Who is this for: This kit is aimed at professional technicians, experienced DIYers, and fleet maintenance teams working on GM engines who need OE-quality replacement injector seals. If you service or rebuild fuel injectors on GM vehicles and want parts made or validated to factory standards, the 217-1588 (12587147) kit supplies the assorted O-rings necessary for proper resealing and dependable fuel system performance.

Features include GM-recommended replacement status, OE-quality materials and fit, and manufacturing to GM specifications for consistent performance.