A Guide to the Transmission Filter Kit for 1965-1976 Dodge Coronet
Keep your classic Coronet's TorqueFlite transmission shifting correctly by choosing the right filter kit.
- A clogged filter can cause serious symptoms like slipping gears and delayed shifting in your Coronet's TorqueFlite transmission.
- Don't confuse a clogged filter with normal Mopar "converter drain-back," which also causes a startup delay.
- Choose a quality aftermarket brand like Wix or ATP for the best fit and performance.
- Replacing the filter and fluid is a messy but simple DIY job that can prevent expensive transmission repairs.
Is Your Coronet's Transmission Acting Up? It Could Be the Filter.
If your classic Dodge Coronet is having trouble shifting, don't assume the worst. A simple, clogged transmission filter can cause major problems. Because this part is so important for the health of your TorqueFlite transmission, you should know the signs of a problem and how to choose the right replacement part.
🎬 Watch: A professional refresh of a 1967 Coronet transmissionSymptoms of a Clogged Transmission Filter
When the filter gets clogged, it restricts the flow of transmission fluid. This starves the transmission of the pressure it needs to work properly. Look for these common signs:
- Delayed Shifting: You might notice a long pause after shifting from Park to Drive or Reverse before the car starts to move.
- Slipping Gears: The transmission may unexpectedly slip out of gear while you are driving, or the engine may rev high without the car speeding up.
- Whining or Rattling Noises: Strange noises from the transmission area can be a sign that the pump is struggling to pull fluid through a clogged filter.
- Burnt Fluid: If you check your transmission fluid and it looks dark brown or black, or smells burnt, it's a sign of overheating, which can be caused by a clogged filter.
- Fluid Leaks: Sometimes, restricted flow can increase pressure elsewhere, causing gaskets and seals to leak.
A Common Mopar Quirk: Converter Drain-Back
Many classic TorqueFlite transmissions have an issue called "converter drain-back." After the car sits for a while, fluid drains out of the torque converter. This causes a delay in shifting when you first start the car, which goes away after about 30 seconds. Many owners mistake this for a bad filter. To check, start the car in Neutral and let it idle for 30 seconds before shifting into gear. If the delay is gone, it's just normal drain-back.
Choosing the Right Aftermarket Filter Kit
For a 1965-1976 Coronet, original Mopar parts are generally not available from dealerships. High-quality aftermarket parts are the standard and work very well. The key is to choose a reputable brand.
Tier 1: Premium Aftermarket
- Wix: Wix is a well-respected brand known for making high-quality filters. Their kits for classic Mopars are known to fit correctly and perform reliably. Many consider Wix a top-tier choice for filtration.
- ATP: ATP specializes in transmission components and is another excellent option. They are famous for their "3rd Hand" pan gaskets, which have small holes to hold the bolts in place, making it much easier to install the pan from underneath the car. 🎬 See how ATP filter kits and gaskets simplify the installation
Tier 2: Standard Aftermarket
- ACDelco, Premium Guard, Pioneer: These brands offer reliable replacement parts that meet original specifications. While not as specialized as Wix or ATP in this specific area, they provide a good balance of quality and value for a standard filter change.
Typical Cost for a New Transmission Filter Kit (1965-1976 Dodge Coronet)
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Kit | $16 - $57 |
| Shop Labor | $100 - $200 |
Note: Costs are estimates and can vary based on your location and the specific brands you choose.
Frequently Asked Questions
How often should I change the transmission filter?
For a classic car like the Coronet, a good rule of thumb is to change the transmission fluid and filter every 30,000 miles or every 2-3 years, whichever comes first. If you drive the car hard or in extreme heat, you should do it more often.
Do the kits come with a new pan gasket?
Yes, nearly all transmission filter kits include a new pan gasket. Some kits, like those from ATP, may even include two different gaskets to fit both the A-727 and A-904 transmission pans. The gasket material is often cork or a modern composite.
Is this a difficult job to do myself?
No, this is a great DIY job if you are comfortable working under your car. The main challenge is the mess. You will need a large drain pan to catch the old fluid. The process involves removing the pan bolts, dropping the pan, replacing the filter, cleaning the pan, and reinstalling with a new gasket. It is very important to tighten the pan bolts to the correct torque specification 🎬 Watch: Step-by-step fluid and filter change on a TorqueFlite A727 to avoid leaks.
What kind of transmission fluid should I use?
Most classic Chrysler TorqueFlite transmissions use DEXRON/MERCON or a specific ATF+4 fluid. Always check your vehicle's service manual or a reliable Mopar resource to confirm the correct fluid type for your specific year and transmission to avoid damage.
Helpful Videos
Technical Specifications
Fits Chrysler TorqueFlite A-727 and A-904 automatic transmissions. Common aftermarket part numbers include WIX 58707. Kits typically include the filter and pan gasket(s).
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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.
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Coronet's Transmission Acting Up? It Could Be the Filter.
- Symptoms of a Clogged Transmission Filter
- A Common Mopar Quirk: Converter Drain-Back
- Choosing the Right Aftermarket Filter Kit
- Typical Cost for a New Transmission Filter Kit (1965-1976 Dodge Coronet)
- Frequently Asked Questions
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