The 2004 Kenworth T300 is a medium-duty truck renowned for its versatility and durability. Produced from the late 1990s through 2013, the T300 offered various body styles including conventional cab and chassis, ideal for vocational applications. Its popularity stems from Kenworth's reputation for building tough, reliable vehicles, offering a strong value proposition for businesses. Pricing for a 2004 model would vary significantly based on configuration and condition, generally falling in the mid-to-high range for used medium-duty trucks.
The Good
The 2004 Kenworth T300 excels in robust performance and legendary reliability, ensuring uptime for critical operations. Its comfortable cab provides a productive environment for drivers, while its straightforward design translates to excellent value and manageable maintenance, appealing to both the head and the heart of business owners.
The Bad
Potential weaknesses for the 2004 Kenworth T300 include age-related wear and tear on suspension components and potential for rust in certain climates. Older electronics might also require attention, and specific engine or transmission issues can arise depending on the original specifications and maintenance history.
2004 Kenworth T300: Quick Overview
- Engine Options: The 2004 Kenworth T300 was available with a range of robust diesel engines. Common options included Cummins ISB, ISC, and ISL engines, as well as PACCAR PX-6 engines (though less common in this specific model year for the T300).
- Horsepower: Horsepower ratings typically ranged from approximately 200 hp to over 300 hp, depending on the specific engine model and configuration chosen. For instance, a Cummins ISB could be found in the 200-240 hp range, while an ISC or ISL would offer higher output.
- Fuel Economy: Fuel economy for a truck of this class is highly variable and depends heavily on engine choice, transmission, load, driving style, and operational conditions. Generally, expect figures in the range of 6-10 miles per gallon (MPG).
- 0-60 Times: 0-60 mph times are not a standard metric for commercial trucks like the T300. Performance is measured more by acceleration under load and overall tractive effort rather than rapid acceleration from a standstill.
- Towing Capacity: The towing capacity of the 2004 Kenworth T300 is highly dependent on the chassis configuration, GVR (Gross Vehicle Rating), and specific axle ratios. These trucks are designed for vocational applications, and their Gross Combination Weight Rating (GCWR) could range from 26,000 lbs up to well over 50,000 lbs, allowing for significant towing of trailers and heavy equipment.
- Trim-Level Features: Kenworth typically offered a single, well-equipped cab as standard for the T300, focusing on practicality and driver comfort for vocational use. Key features would include:
- Durable interior materials designed for heavy use.
- Adjustable driver's seat and steering column.
- Air conditioning and heating systems.
- Power steering.
- Full instrumentation for monitoring engine and vehicle performance.
- Available options could include upgraded seating, power windows, and various auxiliary controls for vocational equipment.
- The chassis itself was highly configurable to accommodate various body types like box trucks, dump trucks, service trucks, and more.
2004 Kenworth T300 Specifications
Vehicle Information
| Year | 2004 |
| Make | Kenworth |
| Model | T300 |
| Trim | - |
| Style | - |
| Type | Truck |
| Category | Special Purpose Vehicle Class 8 Tractor |
Manufacturing Details
| Made In | Mexico |
| Manufacturing City | MEXICALI |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 57000 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 8.3-L L-6 Diesel |
| Engine Size | 8.3L |
| Engine Cylinders | 6 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | 6x4 |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2004 Kenworth T300 Have?
While the 2004 Kenworth T300 is generally regarded as a robust and reliable medium-duty truck, like any vehicle of its age, it can experience common issues. One area to watch for is the exhaust system, particularly concerning the diesel particulate filter (DPF) if equipped, and potential for exhaust manifold leaks. Some owners have reported issues with electrical components over time, such as malfunctioning dashboard gauges, headlight switches, or power window regulators, which are not uncommon for trucks of this vintage. The cooling system is another component that requires diligent maintenance; radiator leaks or failing water pumps can lead to overheating if not addressed promptly. Suspension and brake components, being subjected to constant heavy use, will naturally wear down and require regular inspection and replacement, including tie rods, ball joints, and brake pads/rotors. Drivetrain components, such as transmissions and differentials, are typically very durable, but their longevity is heavily influenced by maintenance and operational stress. Specific to the 2004 model year, while there were no widespread, model-year-specific major recalls that stand out for catastrophic failures, owners should always verify any outstanding manufacturer recalls with a Kenworth dealer. Long-term reliability largely hinges on the truck's service history. A well-maintained T300 with regular fluid changes, lubrication, and timely repairs will undoubtedly outlast one that has been neglected. Common issues that might arise with age include rust formation, especially in areas exposed to salt and moisture, affecting body panels, frame components, and cab corners. Fuel system components, such as fuel injectors or the lift pump, can also become sources of concern after extensive use. It is crucial for prospective buyers to obtain detailed maintenance records to assess the truck's history and identify any recurring problems.
How long will the 2004 Kenworth T300 last?
The 2004 Kenworth T300, when properly maintained, is known for exceptional long-term durability. It is not uncommon for these trucks to accumulate mileage well into the hundreds of thousands, with many owners reporting figures exceeding 500,000 miles or even reaching a million miles with diligent care and major component overhauls. Average mileage accumulation can vary greatly, but for a vocational truck used regularly, 40,000 to 70,000 miles per year is a reasonable estimate. Therefore, a 2004 model could have anywhere from 600,000 to over 1.2 million miles. Weaknesses that tend to emerge over extensive use are primarily age-related: corrosion on the frame and body, wear on suspension and brake systems, and potential for aging electrical components. However, the core powertrain and chassis are built to withstand considerable abuse, making them excellent candidates for refurbishment or continued service, provided maintenance habits have been consistent.
What Technology & Safety Features are Included?
The 2004 Kenworth T300, reflecting its era and vocational purpose, prioritizes functionality and driver productivity over advanced technological integration. Built-in tech and entertainment features are generally quite basic. Standard equipment typically includes an AM/FM radio, often with a cassette player or an early CD player. Power windows and door locks might have been optional on some configurations, but manual operation was common. The dashboard instrumentation is clear and comprehensive, providing essential readouts for engine performance, fuel levels, air pressure, and warning lights, designed for immediate driver awareness.
Driver-assistance features were minimal to non-existent in the modern sense. While power steering enhances maneuverability, advanced systems like lane departure warning, adaptive cruise control, or blind-spot monitoring were not offered. The primary safety feature is the robust construction of the cab itself, designed to protect occupants in the event of an impact. Kenworth trucks are built with sturdy frames and durable cab structures. However, formal crash-test ratings from organizations like the NHTSA or IIHS for commercial medium-duty trucks of this vintage are rarely available, as these testing bodies primarily focus on passenger vehicles. The focus for safety in the T300 is on visibility, mechanical reliability (brakes, steering), and the structural integrity of the cab.
Optional features might have included upgraded audio systems, auxiliary power outlets, and perhaps a basic trip computer. The emphasis was on practical, hard-wearing features that contribute to safe and efficient operation in demanding work environments, rather than creature comforts or electronic aids. The simplicity of the technology also contributes to its long-term reliability, as there are fewer complex electronic systems to fail over time.
Driver-assistance features were minimal to non-existent in the modern sense. While power steering enhances maneuverability, advanced systems like lane departure warning, adaptive cruise control, or blind-spot monitoring were not offered. The primary safety feature is the robust construction of the cab itself, designed to protect occupants in the event of an impact. Kenworth trucks are built with sturdy frames and durable cab structures. However, formal crash-test ratings from organizations like the NHTSA or IIHS for commercial medium-duty trucks of this vintage are rarely available, as these testing bodies primarily focus on passenger vehicles. The focus for safety in the T300 is on visibility, mechanical reliability (brakes, steering), and the structural integrity of the cab.
Optional features might have included upgraded audio systems, auxiliary power outlets, and perhaps a basic trip computer. The emphasis was on practical, hard-wearing features that contribute to safe and efficient operation in demanding work environments, rather than creature comforts or electronic aids. The simplicity of the technology also contributes to its long-term reliability, as there are fewer complex electronic systems to fail over time.
What Colors Options are Available?
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2004 Kenworth T300 Prices and Market Value
The original MSRP for a 2004 Kenworth T300 would have varied significantly based on configuration, engine, and vocational body, but it would have been in the range of $70,000 to over $100,000 when new. Today, the used market prices for a 2004 Kenworth T300 can range broadly from $10,000 to $40,000 or more. This wide spectrum is dictated by mileage, overall condition, maintenance history, and the specific vocational application it's set up for (e.g., a clean chassis vs. a specialized body like a dump or tow truck). Kenworth trucks, especially the T300, hold their value relatively well compared to some other brands due to their reputation for durability and longevity. Factors significantly affecting resale value include the presence of extensive service records, the condition of the engine and transmission, the absence of significant rust, and whether any vocational equipment is still functional and in demand. High mileage and deferred maintenance are the biggest detractors.
2004 Kenworth T300 Cost of Ownership
Owning a 2004 Kenworth T300 involves moderate to high ownership costs, primarily driven by fuel consumption and maintenance. Insurance premiums will be higher than for a passenger vehicle, reflecting its commercial nature and value. Fuel costs are a significant factor, with MPG typically in the 6-10 range, depending heavily on the engine and load. Regular maintenance, including oil changes, filter replacements, and DPF cleaning (if applicable), is crucial and adds to the upkeep expense. Repair costs for diesel engines and commercial truck components can be substantial, though the T300's robust build often means fewer unexpected major repairs if well-maintained. Overall, it's not an economical vehicle to own in terms of outright running costs compared to lighter vehicles, but its durability and capability often justify the investment for commercial purposes.
2004 Kenworth T300 Fuel Efficiency
Fuel Type
Diesel
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
2004 Kenworth T300 Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
2004 Kenworth T300 Insurance
Insurance for a 2004 Kenworth T300 is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2004 Kenworth T300 Compare to Other Truck?
The 2004 Kenworth T300 competes in the medium-duty vocational truck segment. Key rivals include the Freightliner M2 series, International 4300/7300 series, and Peterbilt 330/340. In terms of performance, the T300, with its Cummins or PACCAR engine options, typically offers competitive power and torque ratings, suitable for demanding vocational tasks. Its performance is generally characterized by ruggedness and reliability rather than speed.
Features on the T300 are functional and work-oriented. While rivals like the Freightliner M2 might offer slightly more modern cabin designs or optional creature comforts, the Kenworth emphasizes durability and driver ergonomics for long hours. Reliability is where the Kenworth T300 truly shines. Kenworth has a long-standing reputation for building exceptionally durable trucks, and the T300 is no exception. It often outlasts competitors in terms of chassis and drivetrain longevity, especially when properly maintained. International trucks from this era could sometimes be more prone to electrical gremlins or body rust compared to the Kenworth.
Price-wise, new T300s were typically priced at a premium, reflecting their build quality. On the used market, the 2004 T300 often holds its value well, meaning it might command a slightly higher price than comparable models from International or even some Freightliners, especially in good condition.
Recommendations:
Features on the T300 are functional and work-oriented. While rivals like the Freightliner M2 might offer slightly more modern cabin designs or optional creature comforts, the Kenworth emphasizes durability and driver ergonomics for long hours. Reliability is where the Kenworth T300 truly shines. Kenworth has a long-standing reputation for building exceptionally durable trucks, and the T300 is no exception. It often outlasts competitors in terms of chassis and drivetrain longevity, especially when properly maintained. International trucks from this era could sometimes be more prone to electrical gremlins or body rust compared to the Kenworth.
Price-wise, new T300s were typically priced at a premium, reflecting their build quality. On the used market, the 2004 T300 often holds its value well, meaning it might command a slightly higher price than comparable models from International or even some Freightliners, especially in good condition.
Recommendations:
- Similar Alternatives: The Peterbilt 330/340 is a very close sibling to the Kenworth T300, sharing many components and build philosophies. If you find a well-maintained Peterbilt 330/340, it would be an equally strong contender.
- Slightly Different Focus: The Freightliner M2 series, particularly later models, can offer a more contemporary interior and potentially better fuel efficiency with certain engine options. However, long-term durability might not match that of the Kenworth for some users.
- Consider Body Type: The best alternative often depends on the specific vocational body required. For a dump truck, service body, or other specialized application, condition and suitability of the mounted body might be more critical than minor differences in the chassis.
Final Verdict: Is the 2004 Kenworth T300 a Good Truck?
The 2004 Kenworth T300 is ideally suited for small to medium-sized businesses, owner-operators, and municipalities that require a dependable and durable medium-duty truck for vocational applications such as delivery, construction, or specialized services. It is an excellent choice for buyers prioritizing long-term reliability and a strong resale value over cutting-edge technology or luxury features.
Whether it's worth buying hinges heavily on its condition and maintenance history. A well-cared-for T300 with documented service records, especially those with lower mileage for their age, represents a sound investment. Buying used is almost certainly the only option for this model year. Specific trims aren't as relevant as the engine choice (Cummins or PACCAR are generally preferred) and the vocational body it's equipped with. Buyers should be prepared for ongoing maintenance costs associated with any truck of this age and type. If you need a truck that can go the distance and withstand tough use, the T300 is a highly commendable option, provided a thorough inspection is performed.
Whether it's worth buying hinges heavily on its condition and maintenance history. A well-cared-for T300 with documented service records, especially those with lower mileage for their age, represents a sound investment. Buying used is almost certainly the only option for this model year. Specific trims aren't as relevant as the engine choice (Cummins or PACCAR are generally preferred) and the vocational body it's equipped with. Buyers should be prepared for ongoing maintenance costs associated with any truck of this age and type. If you need a truck that can go the distance and withstand tough use, the T300 is a highly commendable option, provided a thorough inspection is performed.
Eugene S
Eugene is an automotive enthusiast with over 15 years of experience in the used car market. As a writer at VINCheck.info, he brings deep industry insight and a passion for cars, helping readers make smart, informed decisions. Eugene has written hundreds of used car reviews and is known for breaking down complex automotive topics into clear, actionable advice. Over the years, he has driven and worked on a wide range of vehicles—starting with tuning street cars in his early days and eventually focusing on performance upgrades and reliability improvements. Today, he specializes in evaluating used vehicles through the lens of real-world ownership and enthusiast needs. A longtime fan of Porsche, Eugene especially appreciates vehicles that blend durability with driving enjoyment.