Upgrading your Jeep 4.0’s camshaft can wake up that legendary inline-six engine. You might want more torque for off-roading or better power on the highway.
Picking the right cam is tricky with all the options out there. Lift, duration, and cam type all change how your Jeep drives and feels every day.
We looked at the top cam and related parts for the 4.0L engine. Some are for pure power, while others help with reliability during your build.
This guide will help you choose the best part for your needs and budget. Let’s find the perfect cam for your Jeep.
| Product Image | Product Name | Best For | Check Price |
|---|---|---|---|
 |
COMP Cams 821-1 Solid/Mechanical Lifter | High RPM Power | PRICES |
 |
9-0393SB Timing Chain Kit & Water Pump | Full Engine Rebuild | PRICES |
 |
Fitcamx 4K Dash Cam for Jeep Cherokee | Front Video Recording | PRICES |
 |
BDS 3 Inch Lift Kit for Jeep Wrangler JK | Off-Road Height | PRICES |
 |
Fitcamx Front 4K+Rear 1080P Dash Cam | Dual Camera Setup | PRICES |
 |
Fitcamx Dash Cam for Grand Cherokee | Newer Jeep Models | PRICES |
COMP Cams 821-1 Solid/Mechanical Lifter
The COMP Cams 821-1 is a solid mechanical lifter cam for serious Jeep 4.0 builds. It’s made for high-RPM power gains.
This cam profile gives your engine a strong, choppy idle that sounds mean. You’ll feel more pull in the mid-range and top end power band. It works with both small and big block Chrysler engines for wide use.
Installation needs good mechanical skills and the right tools. You should also upgrade valve springs and pushrods to match this cam’s aggressive profile.
Pros:
👍 Great for high-RPM power
👍 Strong mid-range torque boost
👍 Works with many Chrysler engines
👍 Solid build quality
👍 Aggressive sound at idle
Cons:
👎 Needs supporting mods
👎 Not for daily drivers
👎 Hard to install for beginners
My Honest Opinion:
This cam is a beast for built motors, not stock Jeeps. If you’re chasing every last bit of power and don’t mind a rough idle, it’s perfect. Just know you’ll need to upgrade other parts too.
9-0393SB Timing Chain Kit Water Pump
This timing chain kit is a full package for your 3.7L Jeep engine rebuild. It has everything you need in one box.
The kit includes a new water pump, timing chain, and all related gaskets. This saves you time hunting for individual parts. Fitment covers several Jeep and Dodge models from 2004 to 2010.
Installation is still a big job that needs mechanical know-how. But having all the parts together makes the process much smoother and faster.
Pros:
👍 Full set of parts in one kit
👍 Includes water pump and gaskets
👍 Fits many Jeep and Dodge models
👍 Good value for what you get
👍 Saves time on parts shopping
Cons:
👎 Complex installation process
👎 For 3.7L, not 4.0L engines
👎 Needs professional tools
My Honest Opinion:
If your 3.7L Jeep needs timing work, this kit is a smart buy. It has all the crucial parts together at a fair price. Just make sure you have the skills and time for the job.
Fitcamx 4K Dash Cam for Jeep Cherokee
The Fitcamx dash cam blends right into your Jeep Cherokee’s interior. It looks like it came from the factory that way.
Video quality is sharp 4K, capturing license plates and road details clearly. The included 64GB card means you won’t run out of space quickly. Installation is truly plug-and-play with no wires to hide.
WiFi connection lets you watch videos on your phone through the app. The G-sensor auto-saves footage if it detects a crash or bump.
Pros:
👍 Perfect factory look
👍 Sharp 4K video quality
👍 Simple plug-and-play setup
👍 Includes 64GB memory card
👍 WiFi app for phone viewing
Cons:
👎 Front camera only
👎 App can be slow at times
👎 Specific to Cherokee models
My Honest Opinion:
This is the cleanest dash cam install for Cherokees I’ve seen. It looks stock and works great. If you want good video without messy wires, this is your best choice.
BDS 3 Inch Lift Kit for Jeep Wrangler JK
BDS lift kits are known for quality and this 3-inch kit for JK Wranglers delivers. It gives you real off-road height without going too extreme.
The kit includes new springs, shocks, and all needed hardware. Ride quality stays comfortable on and off the pavement. You can fit larger tires for better ground clearance and traction.
Installation is still a professional-level job. But the instructions are clear and all parts are included for a complete lift.
Pros:
👍 Good ride quality on and off-road
👍 Complete kit with all parts
👍 Fits larger tires for off-roading
👍 Strong BDS build quality
👍 Clear installation instructions
Cons:
👎 Professional installation recommended
👎 Price is higher than budget kits
👎 Only for 2007-2011 JK models
My Honest Opinion:
BDS makes great lift kits that last. This 3-inch lift is the sweet spot for most JK owners – enough height for serious off-roading but still driveable daily. Worth the extra cost over cheap kits.
Fitcamx Front 4K+Rear 1080P Dash Cam
This dual-camera Fitcamx system covers both front and rear of your Jeep Cherokee. You get complete video coverage of your drives.
The front camera records in sharp 4K while the rear does 1080p quality. Both cameras blend into your Jeep’s design for a clean look. The larger 128GB card handles hours of driving footage.
Setup is still plug-and-play like the single camera version. The app lets you view both camera feeds and download important clips.
Pros:
👍 Front and rear camera coverage
👍 Large 128GB memory card included
👍 Clean, factory-style installation
👍 Sharp 4K front video quality
👍 Simple plug-and-play setup
Cons:
👎 Rear camera wiring takes time
👎 App can be confusing at first
👎 Specific to Cherokee models
My Honest Opinion:
If you want full coverage for your Cherokee, this dual-cam system is fantastic. The rear camera wiring takes patience but the result is worth it. You’ll have proof for any incident front or back.
Fitcamx Dash Cam for Grand Cherokee
This Fitcamx system is made for newer Grand Cherokee models. It keeps that clean factory look while recording both front and rear.
The dual camera setup provides 4K front and 1080p rear video quality. Installation is designed specifically for the 2023-2025 Grand Cherokee body style. It plugs right into your mirror wiring for power.
Note that this version doesn’t include an SD card, so you’ll need to buy one separately. The app works the same as other Fitcamx models for video management.
Pros:
👍 Perfect fit for new Grand Cherokees
👍 Front and rear camera coverage
👍 Clean OEM-style installation
👍 Plugs into mirror for power
👍 Good video quality front and back
Cons:
👎 No SD card included
👎 Specific to 2023-2025 models
👎 Higher price than some options
My Honest Opinion:
If you have a new Grand Cherokee, this is the dash cam to get. The fit is perfect and the dual cameras give you complete coverage. Just remember to buy an SD card separately.
Buyer’s Guide: 3 Key Factors to Consider
Engine Compatibility
Make sure any cam or engine part fits your specific Jeep model and engine size. The 4.