Jump starting a diesel engine requires significantly more cranking power than a gasoline engine, often demanding peak currents of 2000 amps or more. We researched the market, compared manufacturer specifications against published industry standards (such as SAE J537 and BCI battery ratings), and evaluated aggregated owner feedback to identify the jump boxes that deliver reliable starting power for diesel trucks, tractors, and heavy equipment. Our evaluation focuses on peak and cranking amps, battery chemistry, safety features, and real-world owner experiences with cold-weather performance and durability.
Below are our top picks, each with its strengths and limitations. We do not claim to have performed hands-on lab testing, but our analysis is grounded in data from product spec sheets, safety certifications, and thousands of owner reviews. Prices are not included because they fluctuate frequently; we focus on value relative to performance and features.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
NOCO Boost Plus GB40 Best for Light Diesel 1000A peak, 6.0L gas/3.0L diesel |
8.7 | 🛒 Check Price |
 |
NOCO Boost HD GB70 Top Pick for Diesel Trucks 2000A peak, 8.0L gas/6.0L diesel |
9.0 | 🛒 Check Price |
 |
NOCO Boost Pro GB150 Best for Heavy-Duty Diesel 4000A peak, 10.0L gas/8.0L diesel |
9.3 | 🛒 Check Price |
 |
DBPOWER 800A Jump Starter Budget Pick for Small Diesel 800A peak, 6.0L gas/3.0L diesel |
8.1 | 🛒 Check Price |
 |
GOOLOO GP4000 High Capacity Alternative 4000A peak, 10.0L gas/8.0L diesel |
8.4 | 🛒 Check Price |
 |
Schumacher DSR115 Professional Grade 2200A peak, 8.0L gas/6.5L diesel |
8.8 | 🛒 Check Price |
 |
TACKLIFE T8 Pro Versatile Value 1000A peak, 6.0L gas/3.0L diesel |
7.8 | 🛒 Check Price |
1. NOCO Boost Plus GB40: Best for Light Diesel
The NOCO Boost Plus GB40 is a popular choice for light-duty diesel vehicles such as small tractors or 4-cylinder diesel trucks. Based on owner feedback, it reliably starts engines up to 3.0 liters in moderate temperatures. Its peak current rating of 1000 amps is sufficient for many diesel applications, but it struggles with larger displacement engines or extreme cold. The safety features, including spark-proof connections and reverse polarity protection, are among the best in its class.
However, this jump box is not suitable for heavy-duty diesel trucks (6.0L or larger) or commercial equipment. Owners report that it may fail to start a cold 6.0L diesel even after multiple attempts. If you own a large diesel, skip this unit and consider a higher-amperage model. The GB40 is best for those who need a compact, everyday jump starter for smaller diesel engines and occasional gasoline vehicles.
- UltraSafe spark-proof technology and reverse polarity protection
- Compact and lightweight at 2.4 pounds
- Integrated LED flashlight with seven modes
Pros: Very portable and easy to store; Excellent safety features
Cons: Limited to smaller diesel engines (up to 3.0L)
2. NOCO Boost HD GB70: Top Pick for Diesel Trucks
The NOCO Boost HD GB70 is our top pick for diesel trucks up to 6.0 liters. With 2000 peak amps, it provides enough power to start most diesel pickups and SUVs in cold weather. Based on owner feedback and spec sheets, the GB70 consistently starts 6.0L Power Stroke and Duramax engines even below freezing. Its IP65 rating offers protection against dust and water splashes, making it suitable for outdoor use. The safety features are comprehensive, including spark-proof circuitry and reverse polarity alerts.
One limitation is that it may not reliably start larger commercial diesel engines (over 6.0L) or multiple jump starts in a row without recharging. The GB70 is also heavier than smaller units, but that is expected given its capacity. If you need a jump box for a heavy-duty diesel truck (like a 6.7L Cummins) or frequent commercial use, consider a higher-amp model. For most diesel truck owners, the GB70 offers an excellent balance of power, safety, and portability.
- UltraSafe spark-proof technology with IP65 rating
- Can jump start up to 6.0L diesel engines
- 12V power bank and USB charging ports
Pros: Strong cranking power for large diesels; Rugged, water-resistant casing
Cons: Heavier than smaller models at 5.4 pounds
3. NOCO Boost Pro GB150: Best for Heavy-Duty Diesel
The NOCO Boost Pro GB150 is designed for heavy-duty diesel engines up to 8.0 liters. With a peak current of 4000 amps, it can start large commercial trucks, buses, and equipment. According to owner reviews, it handles 6.7L Cummins and 7.3L Power Stroke engines with ease, even in subzero conditions. The unit includes a 12V 10A power supply, allowing it to power accessories or charge batteries. Its safety features are top-notch, with spark-proof technology and heavy-duty clamps rated for high current.
The main drawback is its size and weight, making it less portable. It is not a device you want to carry around daily, but it is ideal for a workshop or garage. Additionally, the GB150 is significantly more expensive than smaller models. If you only need to start a light diesel truck, this is overkill. For those with heavy-duty diesel engines, however, the GB150 is a reliable and powerful tool.
- UltraSafe spark-proof technology with heavy-duty clamps
- Jump starts up to 8.0L diesel engines
- Integrated 12V 10A power supply and USB ports
Pros: Enormous cranking power for large diesels; Can also serve as a portable power source
Cons: Large and heavy (18.8 pounds)
4. DBPOWER 800A Jump Starter: Budget Pick for Small Diesel
The DBPOWER 800A is an entry-level jump box that can handle small diesel engines up to 3.0 liters. Based on owner feedback, it works well for compact tractors and small diesel cars in mild weather. It offers good value for those on a budget, with features like USB charging and a flashlight. The unit is lightweight and comes with a convenient carrying case.
However, durability is a concern. Several owners report that the clamps feel cheap and the battery capacity degrades after a year. It is not recommended for large diesel trucks or frequent use. If you need a reliable jump box for a heavy-duty diesel, spend more on a higher-quality model. The DBPOWER is best for occasional use on small diesel engines and gasoline vehicles.
- Compact design with LED flashlight
- USB output for charging devices
- Includes a carrying case
Pros: Affordable price point; Good for small diesel engines
Cons: Lower build quality reported by some owners; Not suitable for larger diesels
5. GOOLOO GP4000: High Capacity Alternative
The GOOLOO GP4000 offers a peak current of 4000 amps, matching the NOCO GB150 in power. It is capable of starting large diesel engines up to 8.0 liters and includes dual voltage support for 12V and 24V systems, making it versatile for commercial vehicles. Based on owner feedback, it performs well in cold weather and can provide multiple jumps on a single charge.
However, the build quality is not as consistent as more established brands. Some users have reported issues with the clamps or the unit failing after a few months. The GP4000 is also very heavy, similar to the GB150. If you prioritize power and dual voltage over long-term reliability, this could be a good alternative. For those who want a proven track record, the NOCO GB150 is a safer choice.
- Large capacity battery with 4000 peak amps
- Jump starts up to 8.0L diesel engines
- 12V/24V dual voltage capability
Pros: Very high peak current for large diesels; Dual voltage for 12V and 24V systems
Cons: Bulky and heavy (over 15 pounds); Some owners report inconsistent quality control
6. Schumacher DSR115: Professional Grade
The Schumacher DSR115 is a professional-grade jump box designed for heavy use. With 2200 peak amps, it can start diesel engines up to 6.5 liters. It features a built-in battery and alternator tester, which is useful for diagnosing electrical issues. The unit is IP65 rated, making it resistant to dust and water. Owner reviews highlight its rugged construction and long lifespan.
However, the DSR115 is pricier than comparable models from NOCO and lacks the peak amperage of the GB150. It is also relatively heavy at 12 pounds. If you need a jump box for a diesel engine over 6.5L, this may not have enough power. It is best for professionals who need a durable, multi-functional tool for medium-duty diesel vehicles.
- Professional-grade with heavy-duty clamps
- Battery and alternator tester built in
- IP65 rated for dust and water resistance
Pros: Very durable and reliable; Includes diagnostic features
Cons: More expensive than similar capacity units; Heavier and less portable
7. TACKLIFE T8 Pro: Versatile Value
The TACKLIFE T8 Pro is a budget-friendly jump box suitable for small diesel engines up to 3.0 liters. It offers 1000 peak amps and features USB-C charging, which is convenient. The smart clamps provide protection against reverse polarity. Based on owner feedback, it works well for gasoline engines and small diesel vehicles in mild conditions.
However, it lacks the power to start larger diesel engines, and some owners report durability issues, such as the clamps breaking or the battery not holding a charge after a few months. It is not recommended for heavy-duty use. If you have a small diesel tractor or a light truck and want an affordable option, the T8 Pro may suffice. For anything larger, look for a more robust model.
- 1000 peak amps with smart jumper clamps
- USB-C input for faster recharging
- Built-in compass and LED light
Pros: Good value for the price; USB-C fast charging
Cons: Not powerful enough for larger diesels; Build quality concerns over time
Frequently Asked Questions
What size jump box do I need for a diesel engine?
For diesel engines, you generally need a jump box with a peak current of at least 2000 amps for a 6.0L engine and 4000 amps for larger engines. We recommend checking the manufacturer’s specifications for the maximum engine displacement supported. Also consider cold cranking amps (CCA) if the manufacturer provides that rating, as diesel engines require more CCA than gasoline.
Can I use a jump box designed for gasoline engines on a diesel?
You can, but only if the jump box’s peak current is sufficient for the diesel engine’s requirements. Most jump boxes for gasoline cars have lower peak amps (around 400-1000A) and may not start a diesel, especially in cold weather. Always verify the jump box’s compatibility with diesel engines before purchasing.
What safety features should I look for in a jump box for diesel?
Look for spark-proof technology, reverse polarity protection, over-current protection, and over-voltage protection. Diesel engines draw high current, so safety features prevent dangerous sparks and damage to the vehicle’s electronics. Many top brands like NOCO and Schumacher include these features.
How many times can a jump box start a diesel engine on a single charge?
This depends on the battery capacity of the jump box and the size of the diesel engine. A high-capacity unit like the NOCO GB150 can provide 20-30 jumps on a full charge for a 6.0L diesel, but smaller units may only manage 5-10. Cold weather reduces the number of jumps. We recommend checking the manufacturer’s estimated jump count.
Is it safe to leave a jump box connected to a diesel battery for long periods?
No, you should not leave a jump box connected for extended periods. Most jump boxes are designed for temporary use only. Prolonged connection can lead to overcharging or damage to the jump box’s internal battery. Disconnect the clamps as soon as the engine starts.
Our Verdict
After researching specifications and owner feedback, our top pick for most diesel truck owners is the NOCO Boost HD GB70, which offers a strong balance of power, safety, and portability for engines up to 6.0L. For heavy-duty diesel engines over 6.0L, the NOCO Boost Pro GB150 is the best choice due to its massive 4000A peak current. If you need a professional-grade unit with diagnostic features, the Schumacher DSR115 is a durable alternative.
