Transmission Filter Kit Guide for 1978-1982 Dodge A-Body & F-Body Cars
If you own what you think is a 1978-1982 Dodge Dart, this guide is for you.
- The Dodge Dart was not sold in the US market between 1978-1982; the successor vehicle was the 1976-1980 Dodge Aspen.
- Parts for the Aspen's TorqueFlite A904 and A727 transmissions are correct for this period.
- Identify your transmission by the pan shape (A904 is square, A727 is irregular) to ensure you buy the correct filter kit.
- Good aftermarket brands like Wix and Fram are readily available and offer excellent quality for this part.
A Note on Your Vehicle's Model Year
If you're shopping for parts for a 1978, 1979, 1980, 1981, or 1982 Dodge Dart in North America, you may have trouble finding it listed. That's because Dodge stopped making the Dart for the U.S. market in 1976. The car that replaced it was the Dodge Aspen, which was sold from 1976 to 1980. The Aspen used a very similar chassis (called the F-body) and the same engines and transmissions as the last Darts. In some countries like Mexico, the Aspen was actually sold under the Dodge Dart name. So, if you have a Dodge car from this period, you likely have a late-model 1976 Dart or a 1976-1980 Dodge Aspen. This guide will help you find the right transmission filter for it.
Symptoms of a Clogged Transmission Filter
A transmission filter doesn't fail suddenly. It clogs over time. When it gets too dirty, it can starve the transmission of fluid, leading to problems. Watch for these signs:
- Delayed Shifting: You might notice a long pause when you shift from Park into Drive or Reverse.
- Rough or Hard Shifts: The car may jerk or clunk when it changes gears.
- Whining or Buzzing Noises: A clogged filter can make the transmission's fluid pump work harder, causing a whining sound that changes with engine speed.
- Transmission Slipping: The engine may rev up, but the car doesn't speed up as it should, as if it's stuck between gears.
- Burning Smell: A burnt toast smell can mean the transmission fluid is overheating because it can't flow properly.
Vehicle-Specific Issues: The F-Body Reputation
The Dodge Aspen and its twin, the Plymouth Volaré, were known for significant quality problems, especially in the 1976-1977 models. These cars had many recalls and were famous for severe rust issues, particularly on the front fenders and around the suspension mounts. While the 'Slant 6' engine and the TorqueFlite automatic transmissions were generally tough and reliable, the car built around them had issues. When checking your transmission, it's a good idea to inspect the surrounding frame and floor for rust damage.
Choosing the Right Aftermarket Transmission Filter
For these vehicles, there is no real difference in quality between an OEM Mopar part and a good aftermarket one. The technology is simple, and many reputable brands make reliable kits. The most important thing is to get the right kit for your specific transmission. Your car will have either the smaller A904 (also called 30RH) or the larger, heavy-duty A727 (36RH) TorqueFlite transmission. The A904 was common with the Slant-6 and 318 V8 engines, while the A727 was often paired with the 318 and 360 V8 engines. The transmission oil pans have different shapes, which is the easiest way to tell them apart. The A904 pan is mostly square, while the A727 pan has a more irregular shape with a cutout corner.
| Brand Tier | Brands | General Quality & Notes |
|---|---|---|
| Premium Aftermarket | Wix, Fram | Wix is highly regarded for its filter quality and includes quality gaskets. Fram is another well-known brand offering reliable kits. These are excellent choices for any owner. |
| Standard Aftermarket | Duralast, PTC, ATP, AC Delco | These brands offer good, affordable kits that meet OEM specifications. They are widely available at auto parts stores and provide a good balance of price and quality for a standard transmission service. |
| Economy | Store brands, various online sellers | While very inexpensive, the main difference is often the quality of the included pan gasket. Some cheaper gaskets may be made of cork that can be brittle or prone to leaking if not installed perfectly. If you use an economy kit, consider buying a separate, higher-quality rubber or composite gasket. |
Pro Tip: Get the Right Gasket
The kit you buy will come with a pan gasket. Some are cork, and some are a fiber composite or rubber. Many mechanics prefer rubber or composite gaskets because they are more forgiving and less likely to leak. When you tighten the pan bolts, do it in a crisscross pattern and don't overtighten them, as this can warp the pan and cause leaks.
Frequently Asked Questions
How often should I change my transmission filter?
For these older vehicles, a good rule of thumb is to change the transmission fluid and filter every 30,000 to 50,000 miles, or if you start to notice any shifting problems. Regular service is the key to making these durable TorqueFlite transmissions last.
Do I need a special fluid for my transmission?
These transmissions use ATF+4 fluid. It is the modern fluid that replaced the older types. Do not use DEXRON or other fluid types, as they can cause shifting problems or damage.
Is the filter the same for the A904 and A727 transmission?
No, they can be different. While some kits are listed for both, there are variations in filter shape and depth over the years. The pan gaskets are definitely different due to the pan shape. Always confirm which transmission you have before buying a kit.
What is the difference between a screen filter and a felt filter?
Original filters were often just a metal or brass screen. Many modern replacement kits use a felt or dacron material that can filter out smaller particles. For a daily driver, either type is acceptable, but the felt/dacron type offers slightly better filtration.
Technical Specifications
OEM Part Numbers: 3515966
Fits Chrysler/Dodge/Plymouth TorqueFlite A904 (30RH) and A727 (36RH) automatic transmissions. Kit typically includes one filter (screen or dacron/felt) and one pan gasket (cork or fiber/rubber).
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.