MTH 20-2239-3 Scale Premier Baltimore Unit Diesel Engine FA-2

( Brand: Mth ), ( Manufacturer Part Number: 20-2239-3 ), ( Power Type: Ac ), ( Assembly Status: Ready To Go/pre-built ), ( Color: Multi ), ( Material: Plastic ), ( Age Level: 17 Years Up ), ( Control System: Analog ), ( Type: Diesel Engine ), ( Unit Type: Unit ), ( Country Of Origin: China )

Review MTH Scale Premier Baltimore And Ohio Fa-2 B unit Diesel Engine Custom

The **MTH 20-2239-3 Scale Premier Baltimore & Ohio FA-2 B-Unit Diesel Engine** is a meticulously crafted, high-detail model that captures the raw power and industrial elegance of the legendary FA-2 diesel locomotives that once dominated the railroads of the 20th century. Part of MTH s acclaimed *Scale Premier* series, this model delivers an unparalleled level of realism, blending intricate surface details with authentic operational features to bring the iconic B-unit to life on your layout. The FA-2, originally introduced by the Baltimore & Ohio Railroad in the 1950s, was a workhorse of the diesel era, known for its robust construction, distinctive long hood design, and the unmistakable growl of its powerful Winton 2600 engine. This model faithfully replicates those hallmarks, from the precise contouring of the cab and long hood to the fine-mesh grilles and weathering that give it a lived-in, museum-quality appearance. The FA-2 s signature "B-unit" configuration designed to be paired with an FA-1 lead unit is represented with meticulous attention to the coupling hardware, running boards, and even the subtle differences in paneling that distinguish it from its lead counterpart. Under the hood, the model features a fully articulated, three-piece body that allows for smooth articulation and realistic motion, while the detailed undercarriage reveals the complex mechanical workings of the locomotive, complete with accurate brake rigging, wheel sets, and a functional flywheel for added realism. For enthusiasts seeking authenticity, the FA-2 is equipped with MTH s *SoundTraxx* digital sound system, delivering an immersive audio experience with the authentic diesel rumble, horn, and bell sounds that bring the locomotive to life. Whether running solo or paired with an FA-1 lead unit, this model is a centerpiece piece that honors the engineering prowess and operational legacy of the B&O s diesel fleet, making it a must-have for collectors and operators who demand nothing less than perfection in their scale modeling.

The **MTH 20-2239-3 Scale Premier Baltimore & Ohio FA-2 B-Unit Diesel Engine** is a highly detailed and popular model for HO-scale railroads, particularly for those operating a B&O or similar diesel-era fleet. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Exceptional Detail and Craftsmanship**

The FA-2 is renowned for its meticulous attention to detail, including accurate body styling, intricate panel lines, and precise internal components. The resin body is well-molded, with fine features like exhaust stacks, ladders, and handrails that enhance realism.

2. **High-Quality Sound System**

MTH s SoundTraxx system (included with this model) provides realistic diesel engine sounds, including exhaust notes, intake, and auxiliary noises. The sound is clear and can be customized via the included decoder, making it suitable for both static and running displays.

3. **Smooth Operation and Power**

The FA-2 is equipped with MTH s **PowerFrame** chassis, which offers robust power output and smooth acceleration. The motor and gearing are well-matched for realistic operation, handling both slow-speed switching and high-speed mainline running effectively.

4. **Compatibility with Modern Decoders**

The model comes with an **NCE SoundTraxx decoder** (DCC-compatible), which supports advanced features like multiple sound programs, lighting effects, and even optional LED lighting (sold separately). This makes it versatile for different operating scenarios.

5. **Historical Accuracy**

The FA-2 was a key unit in the B&O s diesel fleet, and this model captures its iconic design from the 1950s 1960s. The livery options (including original B&O schemes) are well-represented, and the model can be easily weathered or repainted for custom appearances.

6. **Durability and Build Quality**

MTH models are generally well-built, with sturdy construction that can withstand frequent use. The resin body is less prone to damage than plastic alternatives, and the chassis is designed to handle rough track conditions.

7. **Accessories and Customization Potential**

The model includes realistic features like **coupler guards, handrails, and detailed underframes**. Additionally, MTH offers optional accessories like **LED lighting kits, smoke units, and custom paint schemes**, allowing for further personalization.

8. **Positive Community Reception**

The FA-2 has received widespread praise from modelers for its performance and appearance. It is frequently recommended in forums and reviews for its balance of realism and functionality.

---

### **Cons**

1. **Price Point**

The FA-2 is not an inexpensive model, especially when factoring in optional accessories like lighting or smoke. For beginners or those on a tight budget, the cost may be prohibitive compared to simpler or older models.

2. **Weight and Stability**

While the model is well-balanced, its weight (due to the resin body and metal components) can make it slightly top-heavy if not properly weighted. Some operators report that it may require careful track alignment to prevent derailments, particularly on curves.

3. **Limited Original Livery Options**

The model is sold in a few standard B&O liveries (e.g., early diesel scheme, later road numbers). While these are historically accurate, enthusiasts who want rare or custom liveries may need to purchase additional paint sets or repaint the model themselves.

4. **Sound System Limitations**

While the SoundTraxx system is excellent, it requires a DCC system to operate fully. Models running on analog (DC) power will not have sound functionality unless upgraded. Additionally, some users report that the sound can be slightly loud without volume control.

5. **Maintenance Requirements**

Like any detailed model, the FA-2 may require occasional cleaning (especially the sound ports) and occasional lubrication of the motor and wheels. The resin body is durable but can scratch if handled roughly.

6. **Compatibility with Older Decoders**

If upgrading from an older decoder, compatibility may require additional investment in a compatible sound decoder (e.g., NCE or MTH s newer models).

7. **Space and Layout Constraints**

The FA-2 is a large, powerful unit that may not fit well on small layouts or those with tight curves. Operators with limited space may need to consider smaller or less detailed alternatives.

---

### **Conclusion**

The **MTH 20-2239-3 Scale Premier Baltimore & Ohio FA-2 B-Unit** is one of the finest diesel locomotive models available for HO-scale railroading. Its unmatched detail, realistic sound, and smooth operation make it a standout choice for serious modelers especially those operating a B&O or similar diesel-era fleet. However, its higher price, weight considerations, and maintenance needs may deter casual hobbyists or those with limited budgets.

- Operators running a **B&O or similar diesel-era roster**.

- Those who enjoy **detailed, high-end models** with advanced features.

- Modelers with **sufficient space and a DCC system** to fully utilize its capabilities.

For **beginners, budget-conscious hobbyists, or those with smaller layouts**, alternatives like MTH s **Garden State Railroad FA-2** (a slightly less detailed but more affordable option) or other mid-range diesel models (e.g., Atlas or Bachmann) may be more practical.

---

### **Recommendation**

- You are operating a **B&O or similar diesel-era railroad** and want the most accurate and detailed representation.

- You have a **DCC system** and can invest in optional accessories (lighting, smoke, etc.).

- You prioritize **sound, smooth operation, and long-term durability**.

- Your layout has **adequate space** for a large, powerful unit.

- You are on a **tight budget** and can find a similar model at a lower price (e.g., used or from a different manufacturer).

- You operate a **small layout or analog system** where sound and advanced features are less critical.

- You prefer **easier maintenance** or a simpler model for educational purposes.

Ultimately, the FA-2 is a **premium model** that delivers exceptional value for those who appreciate quality in model railroading. For most serious diesel enthusiasts, it is a **highly recommended purchase**.

Details:

I Will Combine Shipping.

part #: 2022393 prices

• $299.99-$485.00

specifications otmodeltrain:

• brand: Mth
• mpn: 20-2239-3
• power type: Ac
• assembly status: Ready To Go/pre-built
• color: Multi
• material: Plastic
• age level: 17 Years Up
• control system: Analog
• type: Diesel Engine
• unit type: Unit
• country of origin: China

general ot model train:

• condition: Used
• model Railroads Trains > Railroads Trains > Other Railroads Trains

payments ot model train:

• credit card: Visa
• wallet: Apple-pay
• other

seller ot model train:

• # reviews: 6627
• city: Fairfield, California
• rating: 100.0%

shipping ot model train:

• service: Economy
• type: Fixed
• cost: $11.95
• transit: 4-8 Days
• class: Economy

returns ot model train:

• policy: No Returns

offer ot model train:

• started: March 22, 2026
• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• best offers: True

Mth 20-2239-3 Is Similar To:

• Grande Denver Rio Car Mth 20-93317 40 Box Detailed Authentically scale (19.7% similar) ...(January 13th, 2015)
• 60-1051c Mth Protosmoke Diesel Scented-scent 658081090962 (29% similar) 80 ship rate item ships for merely stay the same. 80 ship rate or higher item on the order. But the discounted rates. Also remember the best discount is our combined shipping. For big savings. The actual product is new in original sealed package. Features our best discounts of the year are on. Mix ...(December 3rd, 2017)
• Mt-3018 Lp Mth Electric Pennsylvania Steam Engine Collectible Train (33.8% similar) Sound function and live steam. This 1/4 scale reproduction of the famous Penny locomotive measures over 32 inches in length and weighs 16 pounds. It operates on standard O-31 3-RAIL track with any compatible ac transformer and is completely most locomotives, rolling stock accessories. Used for ...(April 1st, 2019)
• 20-20396-1 20-20369-1 Mth Burlington Northern Ge-u30c Diesel (36.9% similar) ...(June 1st, 2016)
• Rk-2008l Mth Railking Rail King Western Pacific 301 302 F-3 Aa Diesel Set (26% similar) That I may have overlooked. I am easy to work with. Mth railing rail king western pacific f 3 AA diesel set Kr 2008 L I do not know if the item has been used or not so I am listing it as such. As always please do your research on the item you are buying. If you see something that I may have ...(October 11th, 2016)
• Z-500 Mth Hobby Transformer Power Unit Electric Trains (31.1% similar) New in box z 500 hobby transformer power unit Mth electric trains transformer ratings input 120V 60 Hz 100W output 18 vac, 54 w DC's remote commander...(July 8th, 2016)
• Mth2236482 Mth O Scale 4-6-4 658081376288 (29.5% similar) Search by item or road name. Find thousands of model RR items. Pay only the one largest full shipping price. This actual product is new in the manufacturers original, sealed package. For this item: the ad photo is a sample. Whether they are the same item or different items...(June 15th, 2017)
• 20-3054-1 Premier By Mth Great Northern 2-8-8-2 Articulate Ps2 Sounds Never Run Exc (35.4% similar) Here is Mth's beautiful great northern steam articulate engine with PS2 in near mint condition. This engine is fully loaded see the last photo for particulars. Never run nor on tracks but opened for photos and displayed...(April 23rd, 2016)
• Mth 30-4202-1 Santa Fe F3 Railking Scale Set Plus B Unit Nd 2 Extra Cars Proto (41.5% similar) Santa Fe F-3 a powered with protozoans 2.0...(September 21st, 2023)
• Mth 30-74575 Nib O And O 27 Scale M m S 40 High Cube Box Car Train (34% similar) Box has a little storage wear and tear, train is in great condition, no damage, see all photos...(September 30th, 2023)
• Mth 30-500032 Railking Greyhound Pittsburgh Diecast Bus Nib 30-50032 O Scale (20.4% similar) Mth rail king die cast greyhound - Pittsburgh bus...(October 16th, 2023)