Why does it say this doesn’t work on 02 wrangler 4.0?

Not sure, but I can tell you it works on a 99 Grand Cherokee 4.0 and an 03 Grand Cherokee 4.0. Not sure what the differences between the wrangler and Grand Cherokee 4.0’s are

Does it fit a 2003 TJ wrangler ?

This Jeep Fuel Rail kit is meant for any Jeep with a 4.0L inline 6 cylinder engine, '97 - '04. This will also work for mater model 4.0L inline 6cyl engine with some modification to the fuel rail sleeve.

Is there any reason why this shield/kit would not fit a 1996 Cherokee XJ 4.0?

If the intakes and fuel rail look the same, it'll likely fit.. There have been small changes in the intake manifold over the years that could make the flat shield not fit..

Will this fit an 82 cj7 4.2 that has mopar mpi installed? it is based on the wrangler 4.0 mpi set up.

Can’t speak specifically to that motor, but this set fits the 99-03 4.0 in the Grand Cherokee for sure and I’m sure the same years of Wrangler.

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Description

❄️ Keep your Jeep cool, your fuel cooler, and your ride unstoppable!

BEAT VAPOR LOCK LIKE A PRO - Advanced dual-sided aluminum barrier cuts heat soak, keeping your fuel system cool and reliable.
ALL IN ONE THERMAL SHIELD KIT - Includes manifold cover, fuel rail cover, injector covers, and OE O-rings for a seamless upgrade.
BOOST ENGINE LONGEVITY PERFORMANCE - Protects injectors and fuel rails from heat damage, reducing breakdowns and improving fuel efficiency.
DIY FRIENDLY WITH HOOK LOOP DESIGN - Install in your own garage with minimal tools and zero hassle—professional results guaranteed.
PRECISION FIT FOR JEEP 4 0 L INLINE 6 - Custom engineered for 1997-2004 Jeep Wrangler & Cherokee models to ensure perfect installation.

The Design Engineering Fuel Rail & Injector Cover Kit is a precision-engineered heat shield system designed specifically for 1997-2004 Jeep models with the 4.0L inline 6 engine. Featuring a dual-sided aluminum barrier with high-temp insulation, this kit effectively reduces heat soak and vapor lock by protecting fuel rails and injectors from radiant engine heat. The complete set includes manifold and fuel rail covers, six injector covers, and 12 OE replacement O-rings, all designed for easy, professional-grade installation. Ideal for Jeep enthusiasts seeking to enhance engine reliability and performance by maintaining optimal fuel temperatures.

Specifications

Brand	Design Engineering
Color	Silver
Material	Aluminum
Exterior Finish	Design Engineering Fuel Rail & Injector Cover Kit
Item dimensions L x W x H	6.25 x 1.88 x 15.38 inches
Vehicle Service Type	1997-2004 4.0L Jeep models with inline 6 motor
Style	Modern
Item Weight	0.6 Pounds
Automotive Fit Type	Vehicle Specific Fit
OEM Part Number	010378
Manufacturer	Design Engineering, Inc.
UPC	607078103789
Global Trade Identification Number	00607078103789
Model	010378
Item Weight	9.6 ounces
Product Dimensions	6.25 x 1.88 x 15.38 inches
Item model number	10378
Manufacturer Part Number	10378
Special Features	Reduces fuel rail & injector fuel temps

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