Joworthy Fuel Injection Plenum Intake Gasket Kit for Chevy K1500 K2500 K3500 (1996–2000) — One-Piece, Heat-Resistant with O-Rings

This gasket kit restores a sealed intake plenum to prevent vacuum and fuel leaks, improve idle stability, and prolong the life of related engine components. It’s an aftermarket replacement designed to meet fit and function requirements for a wide range of Chevy and GMC models, supplied as a complete set with heat-resistant gaskets and O-rings.

Which vehicles will this MS 90269 gasket kit fit?

The Joworthy MS 90269 was developed for late-1990s to early-2000s GM trucks and vans that share the same fuel injection plenum design. Check the vehicle year and model list to confirm compatibility before ordering.

• Fits Chevy C1500, C2500, C3500 pickups and Suburban models (1996–2000 range depending on model)
• Compatible with K1500, K2500, K3500 pickups and Suburban (1996–2000)
• Works with Express 1500/2500/3500 and P30 vans, and Tahoe where specified (1996–2002)

How does this gasket kit help engine performance and fuel economy?

By restoring a tight seal between the plenum and intake mounting surfaces, the kit reduces unmetered air and fuel escape that can cause rough idle, stalling, or fuel smell. Eliminating leaks helps the engine run closer to its original calibration.

• Heat-resistant gasket material resists warping and degradation under engine temperatures
• Included O-rings provide secure seals at injector and mounting points
• One-piece kit simplifies replacement and reduces installation time

What’s included and what materials are used in the MS 90269 kit?

The package contains the plenum gasket and matching O-rings designed to cover all common sealing points for the specified plenum application. Components are made from durable, heat-tolerant materials intended for long-term service in the intake environment.

• Complete single-piece plenum gasket molded for correct port alignment
• Heat-resistant elastomer O-rings for injector and seal points
• Aftermarket manufacturing to meet OEM fit without brand affiliation

How should I install the gasket and what should I watch for during replacement?

Installation requires removing the intake plenum and cleaning mating surfaces thoroughly before seating the new gasket. Use proper torque on fasteners and inspect the plenum and manifold surfaces for warpage or damage before reassembly.

• Clean all old gasket material and debris from mating surfaces
• Replace O-rings on injectors and verify orientation before seating plenum
• Tighten bolts in manufacturer sequence and check for vacuum leaks after startup

Who is this for: The Joworthy MS 90269 fuel injection plenum intake gasket kit is intended for owners, mechanics, and restoration specialists working on compatible 1996–2002 Chevy and GM trucks and vans who need a reliable aftermarket sealing solution. It’s suitable for DIY installers with basic mechanical skills and professional shops looking for a cost-effective replacement gasket with heat-resistant components. Note: this is an aftermarket part produced by Joworthy and is not affiliated with or endorsed by the original vehicle manufacturers; always confirm fitment against your vehicle’s specifications before purchase.