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DEI
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Say goodbye to heat soak and vapor lock in your 4.0L Jeep TJ Wrangler or XJ Cherokee with DEI’s Fuel Rail & Injector Cover Kit. Designed specifically for the legendary 4.0L engine, this kit helps restore smooth, consistent fuel delivery by shielding critical components, especially the vulnerable #3 injector, from damaging underhood heat.At the core is an ultra-resilient 8mm thick thermal barrier, compressed between dual heat-reflective aluminum layers to block and deflect extreme radiant heat. Built for real-world Jeep conditions, the rugged construction stands up to high temps, trail abuse, and daily driving alike.Each fuel rail and injector cover is crafted from premium high-temperature glass fiber with a reflective aluminum outer skin, keeping fuel system components cooler and operating at peak efficiency.Installation is quick and secure with integrated hook-and-loop closures
- Our kit includes everything you need for a professional installation:
- Protects Injectors/Fuel Rail From Engine Heat
- 1 Precision-fit manifold heat shield
- 6 Individual fuel injector covers
- 12 Viton fuel injector O-rings
- 1 Fuel rail heat cover
The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects.
For more information visit: www.P65Warnings.ca.gov

