--- product_id: 36171529 title: "Fuel Rail & Injector Cover Kit" brand: "design engineering" price: "AR$303350" currency: ARS in_stock: true reviews_count: 13 category: "Design Engineering" url: https://www.desertcart.com.ar/products/36171529-fuel-rail-and-injector-cover-kit store_origin: AR region: Argentina --- # Reflective heat shield cuts radiant engine heat DIY-friendly hook-and-loop install with basic tools Proudly made in the USA with premium aluminum Fuel Rail & Injector Cover Kit **Brand:** design engineering **Price:** AR$303350 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your Jeep cool, your fuel stable, and your adventures unstoppable! ## Quick Answers - **What is this?** Fuel Rail & Injector Cover Kit by design engineering - **How much does it cost?** AR$303350 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/36171529-fuel-rail-and-injector-cover-kit) ## Best For - design engineering enthusiasts ## Why This Product - Trusted design engineering brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Pro-Grade Kit:** Includes manifold shield, fuel rail cover, 6 injector covers & 12 OE O-rings for seamless install - • **Effortless Garage Upgrade:** Hook-and-loop design means no sweat installation with just a 10mm socket & basic tools - • **Built to Last, Made in USA:** Durable glass-fiber backed aluminum ensures long-term thermal protection and reliability - • **Beat Heat Soak & Vapor Lock:** Reflective aluminum barrier slashes fuel rail & injector temps for rock-solid performance - • **Precision Fit for Jeep 4.0L:** Custom-engineered for 1997-2004 Wrangler & Cherokee inline-6 engines—no mods needed ## Overview The Design Engineering Fuel Rail & Injector Cover Kit is a high-performance thermal shield system tailored for 1997-2004 Jeep Wrangler and Cherokee 4.0L inline-6 engines. Featuring reflective aluminum and glass-fiber backing, it dramatically reduces heat soak and vapor lock by lowering fuel rail and injector temperatures. The complete kit includes manifold and fuel rail shields, six injector covers, and OE replacement O-rings, all designed for easy DIY installation with basic tools. Proudly made in the USA, this kit enhances engine reliability and performance under extreme heat conditions, making it a must-have upgrade for Jeep enthusiasts who demand durability and peace of mind. ## Description Design Engineering, Inc. Fuel Rail & Injector Cover Kit for Jeep Wrangler and Cherokee (1997–2004, 4.0L Inline-6) is a professional-grade heat protection system designed to reduce heat soak and prevent vapor lock. The kit includes a manifold heat shield, fuel rail cover, six fuel injector covers, and 12 OE replacement O-rings, all constructed from high-temperature glass-fiber-backed aluminum to block radiant engine heat. Installation is simple with the included hook-and-loop design and instructions, requiring only basic tools. By lowering fuel rail and injector temperatures, this kit protects critical fuel system components, maintains fuel stability, and improves engine performance under extreme conditions. Made in the USA by DEI, it delivers durable, high-performance thermal protection for Jeep owners. Review: Looks Neat - My fuel rail was leaking so decided to replace it and saw this product and figured it to be a good idea. I’ve never had heat soak/vapor lock issues with my 4.0L but hopefully with this product I’ll never have to deal with it. Right from the box you can tell the heat shields are quality. The kit is definitely a bit pricy but well worth it because I didn’t have to modify any of the heat shields for my 02’ WJ. Instructions were clear and installation was a breeze. The only awkward part was putting the heat shields on the injectors but it all worked out. Overall, definitely worth it if your 4.0L runs hot and not to mention it looks pretty neat when installed. Review: (UPDATED) I'll admit I was wrong - Well guys it finally happened. We finally got our first hot enough day in Memphis, Tennessee to require A/C and test out my new fuel rail/injector insulation. The install went okay, I put it on a while ago while it was still cold outside. The injector o-rings it came with are a perfect fit. The injector wraps are a so-so fit. The manifold shield I did not use since my factory shield (they're identical) is still intact. The fuel rail fits like a glove once you figure out where to cut the damn thing to make it POSSIBLE to wrap around the rail. Cut a hole for your schrader valve if equipped. But when it's all said and done? It looks great and fits tight. So it's gotta work, right? UPDATE: July 7, 2019, Everyone I have to admit I was wrong when I first wrote my review. I removed the unnecessary bickering and have to apologize to DEI, you guys did a good job after all. I don't know why I previously had symptoms of heat soaking on a ~70* day with this first installed but now that we are well into the 90's I haven't had ANY issues whatsoever. A/C on, hot humid days stuck in interstate traffic, stop and go, very little airflow through the radiator, yet when I get home and shut the Jeep off, change clothes, and head back out for the gym; no vapor lock. I don't have any active fault codes and the only thing I've done to the engine since this install was I also replaced a faulty Throttle Position Sensor. Perhaps the failing TPS gave me SIMILAR symptoms to vapor locking that were affected by excessive heat while still driving and I just thought this insulation kit was to blame. I don't know, but I do know that I was wrong. I'm running harder and hotter than ever in Memphis traffic and getting absolutely NO vapor lock on any cylinder. So this kit is doing great and I wouldn't hesitate to go wheeling in a desert somewhere. I'll continue to update this if anything changes but for now, I highly recommend this kit! I had to come back here to eat my words so I can keep my feedback as accurate as possible. Plus, it's terribly simple to install. I'll add pictures soon. Thanks again! ## Features - HEAT SOAK & VAPOR LOCK SOLUTION – Reflective heat shield material blocks radiant engine heat, reducing fuel rail and injector temperatures to prevent vapor lock and maintain performance. - HIGH-QUALITY FUEL RAIL & INJECTOR COVERS – Aluminum-skinned, glass-fiber backed covers protect fuel rails and injectors from excessive engine heat for long-term reliability. - PERFORMANCE MANIFOLD COVER – Dual-sided aluminum barrier with high-temp insulation sandwiched between provides maximum thermal protection for inline-6 engines. - COMPLETE KIT FOR EASY INSTALLATION – Includes manifold shield, fuel rail cover, six injector covers, 12 OE replacement O-rings, and detailed instructions for professional-grade results. - DIY-FRIENDLY INSTALLATION – Hook-and-loop design allows easy mounting in your garage with basic tools (10mm socket, ratchet, flathead screwdriver, fuel rail disconnect tool). - Made in the USA ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B015NOKWQY | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #39,895 in Automotive ( See Top 100 in Automotive ) #15 in Automotive Replacement Exhaust Heat Shields | | Brand | Design Engineering | | Brand Name | Design Engineering | | Color | Silver | | Compatible with Vehicle Type | 1997-2004 4.0L Jeep models with inline 6 motor | | Customer Reviews | 4.6 out of 5 stars 1,186 Reviews | | Exterior Finish | Design Engineering Fuel Rail & Injector Cover Kit | | Global Trade Identification Number | 00607078103789 | | Included Components | Fuel Rail & Injecter Cover | | Item Dimensions | 6.25 x 1.88 x 15.38 inches | | Item Type Name | Fuel Rail and Injector Cover Kit for Jeep (1997 - 2004, 4.0L Engine) | | Item Weight | 0.6 Pounds | | Item dimensions L x W x H | 6.25 x 1.88 x 15.38 inches | | Manufacturer | Design Engineering, Inc. | | Manufacturer Part Number | 10378 | | Manufacturer Warranty Description | DEI warrants to the original retail purchaser with proof of purchase for warranty determination that its products are free from defects in material and workmanship while purchaser owns the vehicle upon which such product(s) were originally installed. DEI’s obligation under this warranty shall be limited to the repair or replacement of parts that are determined by DEI to be defective, or refund of … | | Material | Aluminum | | Material Type | Aluminum | | Model Number | 10378 | | OEM Equivalent Part Number | 010378 | | Style Name | Modern | | UPC | 607078103789 | | Unit Count | 1.0 Count | | Vehicle Service Type | 1997-2004 4.0L Jeep models with inline 6 motor | ## Product Details - **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 ## Images ![Fuel Rail & Injector Cover Kit - Image 1](https://m.media-amazon.com/images/I/61tOmPXT8PL.jpg) ## Questions & Answers **Q: Why does it say this doesn’t work on 02 wrangler 4.0?** A: 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 **Q: Does it fit a 2003 TJ wrangler ?** A: 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. **Q: Is there any reason why this shield/kit would not fit a 1996 Cherokee XJ 4.0?** A: 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.. **Q: Will this fit an 82 cj7 4.2 that has mopar mpi installed? it is based on the wrangler 4.0 mpi set up.** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Looks Neat *by J***N on February 24, 2026* My fuel rail was leaking so decided to replace it and saw this product and figured it to be a good idea. I’ve never had heat soak/vapor lock issues with my 4.0L but hopefully with this product I’ll never have to deal with it. Right from the box you can tell the heat shields are quality. The kit is definitely a bit pricy but well worth it because I didn’t have to modify any of the heat shields for my 02’ WJ. Instructions were clear and installation was a breeze. The only awkward part was putting the heat shields on the injectors but it all worked out. Overall, definitely worth it if your 4.0L runs hot and not to mention it looks pretty neat when installed. ### ⭐⭐⭐⭐⭐ (UPDATED) I'll admit I was wrong *by C***B on April 7, 2019* Well guys it finally happened. We finally got our first hot enough day in Memphis, Tennessee to require A/C and test out my new fuel rail/injector insulation. The install went okay, I put it on a while ago while it was still cold outside. The injector o-rings it came with are a perfect fit. The injector wraps are a so-so fit. The manifold shield I did not use since my factory shield (they're identical) is still intact. The fuel rail fits like a glove once you figure out where to cut the damn thing to make it POSSIBLE to wrap around the rail. Cut a hole for your schrader valve if equipped. But when it's all said and done? It looks great and fits tight. So it's gotta work, right? UPDATE: July 7, 2019, Everyone I have to admit I was wrong when I first wrote my review. I removed the unnecessary bickering and have to apologize to DEI, you guys did a good job after all. I don't know why I previously had symptoms of heat soaking on a ~70* day with this first installed but now that we are well into the 90's I haven't had ANY issues whatsoever. A/C on, hot humid days stuck in interstate traffic, stop and go, very little airflow through the radiator, yet when I get home and shut the Jeep off, change clothes, and head back out for the gym; no vapor lock. I don't have any active fault codes and the only thing I've done to the engine since this install was I also replaced a faulty Throttle Position Sensor. Perhaps the failing TPS gave me SIMILAR symptoms to vapor locking that were affected by excessive heat while still driving and I just thought this insulation kit was to blame. I don't know, but I do know that I was wrong. I'm running harder and hotter than ever in Memphis traffic and getting absolutely NO vapor lock on any cylinder. So this kit is doing great and I wouldn't hesitate to go wheeling in a desert somewhere. I'll continue to update this if anything changes but for now, I highly recommend this kit! I had to come back here to eat my words so I can keep my feedback as accurate as possible. Plus, it's terribly simple to install. I'll add pictures soon. Thanks again! ### ⭐⭐⭐⭐⭐ A little pricey, but quality product *by B***D on March 28, 2022* 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. ## Frequently Bought Together - DESIGN ENGINEERING Fuel Rail & Injector Cover Kit for Jeep (1997-2004, 4.0L Engine) - Our Accessories Reduce Vapor Lock & Keep Fuel Injectors & Rails Cooler - XDF 53013360AA PCV CCV VENT VALVE ELBOW & GROMMET SET PCV CCV 2x Vent Valve Elbows and 2x Grommets compatible for Jeep Grand Cherokee 4.0L 2000 2001 2002 2003 2004 - PQY Throttle Body Spacer Compatible with 91-06 Jeep Wrangler TJ YJ LJ Cherokee XJ 2.5L/4.0L Engine Gas MJ w/Gasket 1" Raise Manifold Carb Red --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/36171529-fuel-rail-and-injector-cover-kit](https://www.desertcart.com.ar/products/36171529-fuel-rail-and-injector-cover-kit) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-07-15*