







🛡️ Keep your Jeep cool, calm, and unstoppable.
The Design Engineering 010378 fuel rail and injector cover kit is a precision-engineered thermal management solution for 1997-2004 Jeep models with 4.0L inline-6 engines. Featuring a thick aluminum heat shield backed by glass fiber, this kit reduces fuel rail and injector temperatures to prevent vapor lock and improve fuel efficiency. Easy to install with hook and loop fasteners, it includes all necessary components for a perfect fit, backed by a 4.6-star rating from over 1,100 users.



| ASIN | B015NOKWQY |
| Brand | Design Engineering |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,122) |
| Date First Available | 11 November 2015 |
| Exterior | Painted |
| Item Weight | 272 g |
| Item model number | 10378 |
| Manufacturer | Design Engineering, Inc. |
| Manufacturer Part Number | 10378 |
| Model | 010378 |
| OEM Part Number | 010378 |
| Product Dimensions | 15.88 x 4.78 x 39.07 cm; 272.16 g |
| Special Features | Reduces fuel rail & injector fuel temps |
H**D
The quality
I love it
M**O
WELL PACKAGED TO PROTECT ITEMS BEING BENT LEAFLET SHOWS HOW TO INSTALL PROPERLY ALL ITEMS ARE OF QUALITY
B**D
I use my Jeep XJ to tow a small boat, so I am all too familiar with heat soak issues. I would leave it running on the boat ramp so I didn't have to shudder and shake, barely making it up the ramp. So far this kit solved the problem. I also added hood vents to keep the engine bay Temps down, but I'm sure this kit is enough to stop the heat soak problems. All the fuel rail brackets and holes lined up perfectly, except for the pressure regulator, but one cut with some scissors fixed that. My factory heat shield was totally destroyed, see photo, so the new one looks great. Top of the engine looks much better. I found it best to install the injector wraps after the fuel rail was re-installed. It was too difficult to line up the injectors with holes and connect the electrical connectors with the wraps installed. Overall a nice product. I will definitely save some fuel/wear and tear by not leaving the jeep running during stops.
T**M
Fast service
P**1
Queda perfecto
T**Y
Installed in a 99 Grand Cherokee. No mods needed for the fuel rail wrap. Super handy it came with new injector O rings. Absolutely recommend it to others than want to keep heat away from the fuel system.
Trustpilot
5 days ago
2 months ago