Does your 6.7 Cummins sometimes struggle to start on a cold morning? You’re not alone. Many truck owners know that frustrating feeling when the engine just won’t turn over, especially when the temperature drops. This is often where the grid heater comes into play, and upgrading it can make a big difference in your truck’s reliability.
Choosing the right grid heater upgrade can feel like a puzzle. There are so many different brands and types out there, and it’s tough to know which one will actually perform best and last a long time. You want something that makes starting easier and maybe even improves how your engine runs, but you don’t want to waste money on something that doesn’t work.
In this post, we’ll break down what a grid heater does and why an upgrade might be the perfect solution for your 6.7 Cummins. We’ll explore the benefits of different upgrades, so you can understand what to look for. By the end, you’ll have a clearer picture of how to pick the best grid heater upgrade for your truck, making those cold starts a thing of the past!
Our Top 5 6.7 Cummins Grid Heater Upgrade Recommendations at a Glance
Top 5 6.7 Cummins Grid Heater Upgrade Detailed Reviews
1. JZGRDN Grid Heater 3970001 4948124 with Gaskets 3969988 AP0058
Rating: 8.7/10
Keep your Dodge Ram truck running smoothly this winter with the JZGRDN Grid Heater 3970001 4948124. This brand new grid heater comes with essential gaskets (3969988 AP0058, MS 97248) to ensure a proper seal. It’s designed to be compatible with a wide range of popular trucks and engines, including Dodge Ram 5.9L and 6.7L Cummins, as well as Freightliner, Ford, and New Holland models. This part helps your engine start easier in cold weather.
What We Like:
- Ensures easier engine starts in cold temperatures.
- Includes necessary gaskets for a complete installation.
- Compatible with many Dodge Ram, Freightliner, Ford, and New Holland vehicles.
- Brand new, so you know it’s ready to perform.
What Could Be Improved:
- Specific compatibility for older or less common models might require further research.
- Installation can be challenging for those unfamiliar with engine work.
This JZGRDN Grid Heater is a reliable replacement part that will help your Cummins engine tackle the cold. It offers a good solution for ensuring your truck starts up without a problem when the temperature drops.
2. Mishimoto MMHOSE-RAM-07HU Top Heater Hose Upgrade
Rating: 8.5/10
The Mishimoto MMHOSE-RAM-07HU Top Heater Hose Upgrade is a strong replacement for your Dodge Ram Cummins 6.7L, 2007.5+. It’s designed to fix a common problem with the original hose.
What We Like:
- This hose is a direct fit for your 2007.5+ RAM 6.7L Cummins.
- It replaces the old heater hose that often leaks.
- This means your coolant will flow smoothly without problems.
- The hose uses O-ring-less -10AN connections. This makes it more reliable.
- It comes with thread sealant already on it. This helps prevent leaks from the start.
- Mishimoto offers a Lifetime Warranty. This shows they stand behind their product.
What Could Be Improved:
- The installation might require some basic mechanical knowledge.
- While it’s a great upgrade, it is a specific part and not universally compatible with other trucks.
This heater hose upgrade is a smart choice for keeping your Cummins running reliably. It’s built to last and backed by a great warranty.
3. Seapple Intake Horn Heater Grid Gasket 4940849 68024672AA Compatible With 2007.5-2018 Dodge RAM Cummins Turbo 6.7L Engine
Rating: 8.9/10
Keep your Dodge RAM Cummins Turbo 6.7L engine running smoothly with this brand new Seapple Intake Horn Heater Grid Gasket. Designed for 2007.5 through 2018 models, this gasket is a direct replacement for part numbers 4940849 and 68024672AA. It’s a crucial component for ensuring proper air intake and preventing leaks, helping your truck perform at its best.
What We Like:
- Ensures a tight seal for your intake system.
- Direct fit for 2007.5-2018 Dodge RAM Cummins Turbo 6.7L.
- Replaces OE part numbers 4940849 and 68024672AA.
- New condition means no wear and tear.
- Helps prevent air leaks and maintain engine performance.
What Could Be Improved:
- Installation might require some mechanical skill.
- Specific brand performance compared to OEM is not detailed.
This Seapple gasket is a reliable choice for Dodge RAM owners. It’s a straightforward replacement that can help maintain your truck’s power and efficiency.
4. JZGRDN Intake Heater Grid Gasket Set 3969988 AP0058 Compatible with 1989-06 Dodge 5.9L 6.7 6B 4B 12V 24V Valve Cummins
Rating: 9.2/10
Keep your Dodge Cummins engine running smoothly with this JZGRDN Intake Heater Grid Gasket Set. This set includes two new gaskets, designed to fit perfectly with 1989-06 Dodge 5.9L and 6.7L Cummins engines. It’s a reliable replacement part that helps ensure your engine gets the air it needs.
What We Like:
- Ensures a proper seal for the intake heater grid.
- Direct fit for many Dodge Cummins models from 1989 to 2006.
- Comes with two gaskets, so you have a spare or can do both sides if needed.
- New condition guarantees no prior wear or damage.
- The part numbers 3969988 and AP0058 make it easy to find the right fit.
What Could Be Improved:
- The specific engine types (6B, 4B, 12V, 24V Valve) are listed, but it’s always good to double-check compatibility with your exact engine.
- No installation instructions are mentioned, so you might need to find a guide online.
This gasket set is a straightforward solution for maintaining your Cummins engine. It provides the necessary seal to keep your intake system working correctly.
5. 2 PCS Intake Heater Grid Connection Gasket 3969988 Compatible with 1989-2009 Dodge 2500 3500 5.9L 6.7L 6B 4B 12V 24V Valve Cummins
Rating: 8.9/10
Keep your Dodge Cummins engine running smoothly with this 2-piece set of Intake Heater Grid Connection Gaskets. Designed to fit 1989-2009 Dodge 2500 and 3500 trucks with 5.9L and 6.7L engines, these gaskets are made from strong graphite. They are built to handle the tough conditions under your hood, ensuring a reliable seal for your heater grid.
What We Like:
- Made from durable graphite for long-lasting performance.
- Precise fit ensures a tight seal, preventing leaks.
- Resistant to high temperatures and pressures common in truck engines.
- Direct replacement for OE part numbers like 3969988 and others.
- Compatible with a wide range of Cummins engines, including 12V and 24V models.
What Could Be Improved:
- Installation requires careful attention to detail for optimal performance.
- Regular checks are needed to ensure continued proper function.
This gasket set is a solid choice for maintaining your Cummins engine. It offers good performance and durability for your truck.
Upgrade Your 6.7 Cummins Grid Heater: A Buyer’s Guide
Is your 6.7 Cummins struggling to start in the cold? A grid heater upgrade might be just what you need! This guide will help you pick the best one.
Key Features to Look For
When you’re shopping for a grid heater upgrade, keep these important features in mind:
- Faster Starting: The main goal is to get your truck starting quicker, especially when it’s chilly outside. Look for upgrades that promise quicker heat-up times.
- Increased Heat Output: Some upgrades deliver more heat to your engine’s intake air. This means a better burn and smoother running.
- Durability: You want a part that lasts. Check for robust construction that can handle the heat and vibrations of your engine.
- Ease of Installation: Some kits are easier to install than others. If you’re doing it yourself, look for clear instructions and parts that fit well.
- Voltage Compatibility: Make sure the upgrade works with your truck’s electrical system.
Important Materials
The materials used in a grid heater upgrade are key to its performance and how long it will last.
- High-Quality Heating Elements: These are the heart of the grid heater. Look for strong, reliable materials that can get hot quickly and consistently.
- Durable Housings: The housing protects the heating elements. It should be made from tough materials that won’t warp or break under pressure.
- Corrosion-Resistant Connectors: Good connectors ensure a solid electrical connection and prevent rust, which can cause problems down the line.
Factors That Improve or Reduce Quality
Several things can make a grid heater upgrade better or worse.
- Improved Quality:
- Better design: Some upgrades have smarter designs that spread heat more evenly.
- Stronger materials: Using tougher metals and components makes the upgrade last longer.
- Good manufacturing: Products made with care and precision usually work better.
- Reduced Quality:
- Cheap materials: Using low-quality parts can lead to early failure.
- Poor design: A poorly designed heater might not heat effectively or could even damage your engine.
- Bad fitment: Parts that don’t fit right can be hard to install and may not work as intended.
User Experience and Use Cases
Most people upgrade their 6.7 Cummins grid heater to solve starting problems in cold weather.
- Cold Weather Starting: This is the most common reason. If your truck is slow to start or won’t start at all when it’s cold, an upgrade can make a big difference.
- Smoother Idle: Some users report a smoother idle after installing an upgrade, especially in colder conditions.
- Improved Cold Performance: You might notice your truck runs a bit better and warms up faster after the upgrade.
10 Frequently Asked Questions (FAQs)**
Q: Why would I need to upgrade my 6.7 Cummins grid heater?
A: You might need an upgrade if your truck has trouble starting in cold weather or if the factory grid heater isn’t working efficiently.
Q: How much does a 6.7 Cummins grid heater upgrade typically cost?
A: Prices can vary, but you can expect to pay anywhere from $100 to $300 or more, depending on the brand and features.
Q: Can I install a grid heater upgrade myself?
A: Yes, many upgrades are designed for DIY installation. However, it’s important to follow the instructions carefully or consider professional help if you’re not comfortable working on your truck.
Q: Will a grid heater upgrade affect my truck’s fuel economy?
A: Generally, no. The goal is to improve starting and cold-weather performance, not to change how much fuel your truck uses during normal driving.
Q: Are there different types of grid heater upgrades?
A: Yes, some are direct replacements for the factory unit, while others might offer a more powerful heating element or a different design for better performance.
Q: How long does a grid heater upgrade usually last?
A: With quality parts and proper installation, a good grid heater upgrade can last for many years.
Q: What are the signs that my factory grid heater is failing?
A: Common signs include slow or no starting in cold weather, the truck running rough when cold, or the “wait to start” light not coming on or staying on for too long.
Q: Will a grid heater upgrade void my truck’s warranty?
A: It’s possible, depending on your warranty terms. It’s always a good idea to check with your dealer before making modifications.
Q: Can I use a grid heater upgrade in warmer climates?
A: While it’s most beneficial in cold climates, a more efficient grid heater won’t hurt in warmer weather. It just won’t be as noticeable.
Q: What should I do if I’m unsure about which upgrade to buy?
A: Read reviews from other Cummins owners, check forums, and don’t hesitate to ask for advice from experienced mechanics or parts suppliers.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.

I’m the recipe developer and food photographer behind Air Fryer at Tiffany’s. I’m also a wife, mom to two adventurous little boys, registered nurse, and live in the great Midwest. Join me as I show you new ways to use your air fryer that you never knew possible.




