Introduction
If you're in the market for a heavy-duty truck transmission, you've probably come across the Eaton Fuller RTLO series. These transmissions are workhorses in the trucking industry, powering everything from long-haul semis to construction vehicles. But when it comes down to choosing between the rtlo16713a vs rtlo16913a, many truck owners and fleet managers find themselves scratching their heads.
Both transmissions come from the same family, share similar DNA, and perform incredibly well under pressure. However, there are some key differences that could make or break your decision depending on your specific needs. In this detailed comparison, we'll break down everything you need to know about these two popular models so you can make the right choice for your rig.
Whether you're hauling freight across state lines or managing a fleet of commercial vehicles, understanding the nuances between these transmissions can save you thousands of dollars and countless headaches down the road.
What Are RTLO Transmissions?
Before we dive into the RTLO16713A vs RTLO16913A showdown, let's talk about what RTLO actually means. The "RT" stands for Roadranger Transmission, "L" indicates it has a low inertia design, and "O" means it's an overdrive model. These transmissions are built by Eaton Fuller, a company that's been dominating the heavy-duty transmission market for decades.
The numbers and letters that follow tell you specific details about gear ratios, torque capacity, and design features. Both the 16713A and 16913A are 13-speed transmissions designed for heavy hauling, but they're optimized for slightly different applications.
RTLO16713A Overview
The RTLO16713A is a powerhouse transmission that's been a favorite among truckers for years. It's designed to handle serious weight and deliver reliable performance in demanding conditions.
Key Specifications
- Speeds: 13 forward, 2 reverse
- Input Torque: 1,650 lb-ft
- GVW Rating: Up to 80,000 lbs
- First Gear Ratio: 11.73:1
- Direct Drive: 9th gear
- Overdrive: 13th gear (0.73:1)
This transmission shines in applications where you need strong pulling power combined with fuel efficiency at highway speeds. The 1,650 lb-ft torque rating makes it suitable for most heavy-duty applications, though it's not quite as beefy as its bigger brother.
Best Uses
The 16713A works great for:
- Regional hauling
- Mixed terrain driving
- Medium to heavy loads
- Applications where fuel economy matters
RTLO16913A Overview
Now let's look at the RTLO16913A, which is basically the beefed-up version of the 16713A. This transmission is built for operators who need maximum torque capacity and don't want to worry about pushing their equipment to the limit.
Key Specifications
- Speeds: 13 forward, 2 reverse
- Input Torque: 1,850 lb-ft
- GVW Rating: Up to 80,000 lbs
- First Gear Ratio: 11.73:1
- Direct Drive: 9th gear
- Overdrive: 13th gear (0.73:1)
That extra 200 lb-ft of torque capacity might not sound like much on paper, but in real-world applications, it can make a significant diffrence. This transmission is engineered for the toughest jobs and heaviest loads.
Best Uses
The 16913A excels in:
- Heavy hauling applications
- Mountainous terrain
- Maximum gross weight operations
- Situations requiring frequent heavy acceleration
Detailed Comparison Table
| Feature | RTLO16713A | RTLO16913A |
| Number of Speeds | 13 forward, 2 reverse | 13 forward, 2 reverse |
| Input Torque | 1,650 lb-ft | 1,850 lb-ft |
| GVW Rating | Up to 80,000 lbs | Up to 80,000 lbs |
| First Gear Ratio | 11.73:1 | 11.73:1 |
| Overdrive Ratio | 0.73:1 | 0.73:1 |
| Weight | Approximately 710 lbs | Approximately 735 lbs |
| Oil Capacity | 28 pints | 28 pints |
| PTO Options | Available | Available |
| Price Range | $4,500 - $6,500 (rebuilt) | $5,000 - $7,500 (rebuilt) |
| Ideal Application | Medium-heavy duty | Heavy-duty |
The Main Differences Explained
Torque Capacity
The biggest difference when comparing rtlo16713a vs rtlo16913a is the torque capacity. The 16913A can handle 200 lb-ft more torque than the 16713A. This might seem like a small number, but it translates to:
- Better performance under maximum load
- Less stress on transmission components
- Longer service life in heavy applications
- More confidence when pulling steep grades
Internal Components
To achieve that higher torque rating, the 16913A uses beefier internal components. The gears, bearings, and shafts are designed to withstand more punishment. This means:
- Slightly heavier overall weight
- Enhanced durability
- Better heat dissipation
- Improved reliability in extreme conditions
Price Difference
As you might expect, the higher torque capacity comes with a higher price tag. The 16913A typically costs about $500 to $1,000 more than the 16713A, whether you're buying new or rebuilt. However, this price difference can be justified if you regularly operate at or near maximum capacity.
Performance Comparison
Fuel Economy
When it comes to fuel efficiency, both transmissions perform similarly under normal operating conditions. They share the same gear ratios, so highway cruising efficiency is essentially identical. However, the 16713A might have a slight edge in fuel economy because it weighs about 25 pounds less.
That said, the difference is so small that you probably won't notice it on your fuel bills. Real-world fuel economy depends much more on driving habits, terrain, and load weight than the transmission model.
Shifting Feel
Both transmissions use the same basic shifting mechanism, so the feel is virtually identical. They're both non-synchronized transmissions, which means you need to double-clutch or float gears properly. Experienced drivers won't notice any difference in shifting between the two models.
Durability and Longevity
Here's where things get interesting. The 16913A's heavier-duty components mean it should last longer in demanding applications. If you're regularly hauling at maximum weight or operating in severe conditions, the 16913A will probably outlast the 16713A.
However, if you're operating within the 16713A's design parameters, both transmissions should deliver comparable service life. Proper maintenance is the key factor in transmission longevity, regardless of which model you choose.
Maintenance and Repairs
Service Requirements
Good news – both transmissions have identical maintenance schedules and procedures. Oil changes, filter replacements, and routine inspections are the same for both models. This makes life easier if you're running a mixed fleet with both transmission types.
- Oil Change Interval: Every 50,000 miles (or as recommended)
- Filter Service: With each oil change
- Clutch Adjustment: As needed based on inspection
Parts Availability
Both the RTLO16713A vs RTLO16913A transmissions share many common parts, which is great for inventory management. However, the 16913A uses some unique heavy-duty components that can be slightly more expensive to replace.
The good news is that Eaton Fuller has excellent parts support for both models, and you can find components through multiple suppliers. According to Big Write Hook, proper sourcing of quality parts is essential for maintaining any heavy-duty transmission.
Rebuild Costs
If you need a rebuild, expect to pay slightly more for the 16913A due to its heavier-duty components. A professional rebuild typically runs:
- RTLO16713A: $3,500 - $5,000
- RTLO16913A: $4,000 - $5,500
These prices can vary significantly based on location, labor rates, and the extent of damage.
Which One Should You Choose?
Choose the RTLO16713A If:
- Your gross vehicle weight is typically under 70,000 lbs
- You prioritize initial cost savings
- Your routes don't involve extreme terrain
- Your engine produces less than 1,650 lb-ft of torque
- You want to minimize weight for better payload capacity
Choose the RTLO16913A If:
- You regularly haul at maximum legal weight
- Your routes include steep mountain passes
- You want maximum durability and peace of mind
- Your engine produces between 1,650-1,850 lb-ft of torque
- You plan to keep the truck for many years
Real-World Applications
Long-Haul Trucking
For over-the-road trucking with moderate loads, the 16713A is often the better choice. It provides plenty of capacity for typical freight operations while costing less upfront. Many major fleets use this transmission successfully.
Heavy Haul Operations
If you're moving oversize loads, construction equipment, or operating at maximum gross weight regularly, the 16913A is worth the extra investment. The additional torque capacity provides a safety margin that can prevent costly failures.
Regional and Mixed Use
For regional hauling with varied loads, either transmission can work well. Your decision should be based on your heaviest loads rather than your average loads. It's better to have capacity you don't always use than to need capacity you don't have.
Pros and Cons
RTLO16713A Pros
- Lower purchase price
- Lighter weight (better payload)
- Excellent for most applications
- Widely available parts
- Proven reliability
RTLO16713A Cons
- Lower torque capacity
- Not ideal for maximum weight operations
- May have shorter lifespan under heavy use
RTLO16913A Pros
- Higher torque capacity
- Better for heavy-duty applications
- Enhanced component durability
- Greater safety margin
- Better resale value
RTLO16913A Cons
- Higher initial cost
- Slightly heavier
- Some unique parts cost more
- Overkill for lighter applications
Cost Analysis
Let's talk dollars and cents. When comparing rtlo16713a vs rtlo16913a, you need to consider total cost of ownership, not just purchase price.
Initial Investment
The 16913A costs about 10-15% more than the 16713A initially. For a rebuilt transmission, that's roughly $500-$1,000 difference. For a new unit, the gap can be $1,500 or more.
Operating Costs
Operating costs are nearly identical for both models. They use the same amount of oil, require the same service intervals, and deliver similar fuel economy.
Long-Term Value
If you're operating at higher weights, the 16913A will likely save you money long-term through reduced repairs and longer service life. However, if you're operating well within the 16713A's capacity, the cheaper initial cost makes more sense.
Installation Considerations
Both transmissions are dimensionally similar and use the same mounting pattern, so swapping one for the other is relatively straightforward. However, you should consider:
- Engine compatibility: Make sure your engine's torque output matches the transmission rating
- Driveline components: Verify your driveshaft and rear end can handle the torque
- Clutch requirements: Both need appropriate clutch ratings
- Programming: Some electronic controls may need adjustments
Key Takeaways
- The main difference between RTLO16713A vs RTLO16913A is torque capacity (1,650 vs 1,850 lb-ft)
- Both transmissions share the same gear ratios and basic design
- The 16913A uses heavier-duty components for increased durability
- Choose the 16713A for cost savings and lighter loads
- Choose the 16913A for maximum capacity and heavy-duty applications
- Maintenance requirements are identical for both models
- Price difference is typically $500-$1,000 for rebuilt units
- Both transmissions are reliable when operated within design limits
Final Verdict
So which transmission wins the rtlo16713a vs rtlo16913a battle? The truth is, there's no universal winner – it depends entirely on your specific needs.
If you're running typical freight operations with moderate loads, the RTLO16713A offers excellent value and performance. It's been proven in millions of miles of service and costs less to acquire. For many operators, it's the smart choice.
However, if you're operating at heavy weights, tackling serious terrain, or want maximum peace of mind, the RTLO16913A is worth the extra investment. That additional torque capacity and enhanced durability can pay dividends over the life of your truck.
The best advice? Honestly assess your actual operating conditions, not just your occasional peak demands. If you rarely exceed 70,000 lbs gross weight, save your money and go with the 16713A. But if you're regularly pushing the limits, the 16913A is cheap insurance against expensive failures.
Both transmissions are excellent products from Eaton Fuller. You really can't go wrong with either one, as long as you match the transmission to your actual needs.
Frequently Asked Questions
Q: Can I upgrade from a 16713A to a 16913A?
A: Yes, the transmissions are dimensionally compatible and can be swapped relatively easily. Just make sure your driveline components can handle the higher torque rating.
Q: How long do these transmissions typically last?
A: With proper maintenance, both can exceed 500,000 miles. The 16913A may last longer in heavy-duty applications due to its beefier components.
Q: Is the fuel economy different between the two?
A: No, fuel economy is essentially identical since they share the same gear ratios. The slight weight difference doesn't meaningfully impact fuel consumption.
Q: Which transmission has better resale value?
A: The 16913A typically commands a slightly higher resale price due to its higher torque rating and heavier-duty construction.
Q: Can I use the same parts for both transmissions?
A: Many parts are interchangable, but some internal components are specific to each model. The 16913A uses heavier-duty versions of certain parts.
Q: What clutch do I need for these transmissions?
A: You'll need a clutch rated for at least 1,650 lb-ft for the 16713A and 1,850 lb-ft for the 16913A. Always match clutch capacity to transmission rating.