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Long Box Diesel Truck for Sale: Power, Space, and Performance in One Package GuideMechanic.Com If you’re searching for a long box diesel truck for sale, you’re likely someone who knows what a truck should offer — serious towing capacity, extra bed space, and unbeatable diesel efficiency.
Whether you’re in the construction industry, ranching, delivery business, or just need a heavy-duty workhorse, a long box diesel truck is one of the best choices available.
Let’s break down what makes these trucks so valuable, what to look for when buying, and how to choose the right model for your needs.
Long Box Diesel Truck for Sale
What Is a Long Box Diesel Truck?
See Also: Diesel Box Truck with Liftgate for Sale
A “long box” refers to the long bed or extended cargo bed of a pickup or flatbed truck. Typically:
- Standard Bed: ~6.5 feet
- Long Bed: ~8 feet or more
Paired with a diesel engine, these trucks are ideal for hauling, towing, and supporting equipment-heavy operations.
They offer:
- Greater cargo space
- Improved towing balance
- Ideal setup for gooseneck and fifth-wheel towing
- Better fuel efficiency and torque from diesel engines
Top Benefits of a Long Box Diesel Truck
Here’s why buyers seek out long box diesel trucks:
- 1. Maximum Bed Length
More room to haul equipment, materials, or cargo without needing a trailer.
- 2. Diesel Durability
Engines last longer — often 300,000+ miles — with proper maintenance.
- 3. Towing Power
Diesel engines provide higher torque at lower RPM, ideal for pulling heavy loads.
- 4. Better Weight Distribution
Longer wheelbase improves stability when towing trailers or heavy cargo.
- 5. Increased Payload Capacity
Diesel trucks usually come with higher GVWR and payload ratings.
Long Box Diesel Truck for Sale
Average Prices for Used Long Box Diesel Trucks
Here’s a sample price table for commonly available models:
| Year | Truck Model | Bed Length | Engine | Mileage | Estimated Price |
|---|---|---|---|---|---|
| 2014 | Ford F-350 Super Duty | 8 ft | 6.7L Power Stroke | 160,000 mi | $21,000 |
| 2015 | Ram 2500 Crew Cab | 8 ft | 6.7L Cummins | 150,000 mi | $23,500 |
| 2016 | Chevy Silverado 3500HD | 8 ft | 6.6L Duramax | 140,000 mi | $25,000 |
| 2017 | GMC Sierra 2500HD | 8 ft | 6.6L Duramax | 135,000 mi | $26,800 |
| 2018 | Ford F-250 XL | 8 ft | 6.7L Power Stroke | 125,000 mi | $28,900 |
Prices may vary depending on condition, location, and features.
Popular Models to Consider
These are among the best diesel long box trucks on the used market:
Ford F-250/F-350 Super Duty
- Strong Power Stroke diesel engines
- Common in fleet and commercial use
- Easy to find parts and service
Ram 2500/3500
- Known for reliable Cummins engines
- Great for towing and heavy-duty work
Chevrolet Silverado 2500HD/3500HD
- Offers the dependable Duramax diesel
- Strong frames and high payload ratings
GMC Sierra HD Series
- Upscale version of the Silverado
- Often comes with more features and comfort
What to Look For in a Used Long Box Diesel Truck
When shopping used, here’s a checklist to follow:
- Engine Health
Listen for knocking sounds, excessive smoke, or oil leaks.
- Transmission Type
Automatic vs. manual — make sure it fits your driving preference.
- Bed Condition
Check for rust, dents, or damage — especially on work trucks.
- Towing Features
Look for integrated trailer brake controls, gooseneck hitch, or fifth-wheel capability.
- Frame & Undercarriage
Check for rust, especially in northern or coastal states.
Who Needs a Long Box Diesel Truck?
Long box diesel trucks serve a wide variety of industries:
| Industry | Common Use |
|---|---|
| Construction | Hauling lumber, tools, and heavy equipment |
| Ranching & Farming | Transporting feed, livestock equipment |
| Hotshot Delivery | Long-distance towing with gooseneck trailers |
| Landscaping | Carrying tools, soil, sod, and machinery |
| RV Owners | Towing fifth-wheel campers with ease |
Long Box Diesel Truck for Sale
Long Box vs. Short Box: Which One Fits You?
| Feature | Long Box | Short Box |
|---|---|---|
| Bed Length | 8 ft | 5.5 – 6.5 ft |
| Cargo Capacity | Higher | Lower |
| Maneuverability | Slightly reduced | Easier in tight spots |
| Towing Capability | Better for heavy loads | Suitable for light towing |
| Fuel Economy | Slightly lower (heavier) | Slightly higher |
If you haul large cargo or heavy trailers often, long box is the way to go.
Buying Tips
Here are some smart buying tips when looking for a long box diesel truck for sale near you:
- Ask for Maintenance Records
Trucks with full service logs are a safer bet.
- Check Title Status
Make sure it’s clean and not salvaged or rebuilt.
- Do a Test Drive
Especially with a trailer, if possible. Listen for odd sounds.
- Scan for Codes
Use a diagnostic scanner to check for hidden issues.
- Negotiate Price
Don’t be afraid to negotiate — especially if tires, brakes, or fluids need attention.
Should You Buy New or Used?
| Factor | New Truck | Used Truck |
|---|---|---|
| Price | $60,000 – $90,000 | $20,000 – $35,000 |
| Warranty | Full manufacturer coverage | Limited or none |
| Reliability | No wear or damage | May require maintenance |
| Customization | Choose features you want | Limited to available inventory |
| Immediate Use | Ready after purchase | May need prep or repairs |
If you’re budget-conscious or need multiple vehicles, used is the smarter move.
Final Thoughts
A long box diesel truck for sale is more than just a vehicle — it’s a business asset. Whether you’re towing equipment, hauling loads, or just need extra cargo space and power, this truck category checks all the boxes.
The key to making a good purchase is knowing what you need, researching models, and carefully inspecting used options. With the right truck, you’ll gain durability, power, and value for years to come.
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