MOPAR R5179247AF Transmission

( Manufacturer Part Number: R5179247AF ), ( Part Type: Transmission ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Replaces Part Number: 5179247aa, 5179247ab, 68039352aa, 68104257aa, R5179247ab, R5179247ac, R5179247ad, R5179247ae )

Review MOPAR Genuine Transmission Package

The **Mopar R5179247AF** is a high-performance, factory-specification automatic transmission designed exclusively for Ford s legendary **428 Cobra Jet (CJ) and 429 Super Cobra Jet (SCJ) engines**, as well as select **Ford Mustang models** from the late 1960s and early 1970s. Engineered to deliver uncompromising durability and smooth shifting under extreme power demands, this transmission is a critical component for enthusiasts seeking to restore or build a muscle car with authentic, high-output performance. Built with a **three-speed planetary gearset** and a robust **torque converter**, the R5179247AF is optimized to handle the raw torque of the **428 CJ and 429 SCJ engines**, which were among the most powerful naturally aspirated V8s of their era. The transmission features a **heavy-duty planetary cluster** with precision-machined gears, ensuring minimal wear even under sustained high-RPM conditions, while the **C4-style valve body** (with slight modifications for CJ/SCJ tuning) provides precise hydraulic control for seamless upshifts and downshifts. The **stamped steel housing** is reinforced for strength, and the **integrated bellhousing** ensures a secure, vibration-free connection to the engine, reducing the risk of oil leaks a common issue in aftermarket transmissions. For added reliability, the R5179247AF incorporates **sealed bearings and a reinforced output shaft**, allowing it to withstand the aggressive power delivery of these legendary engines without premature failure. Whether installed in a fully restored **1968-1970 Mustang Boss 429** or a **Cobra Jet coupe**, this transmission delivers the authentic driving experience that muscle car purists demand, blending raw power with the smooth, progressive shifting characteristic of Ford s classic automatic transmissions. Backed by Mopar s reputation for authenticity and performance, the R5179247AF is an essential upgrade for any serious restorer or builder aiming to capture the spirit of America s golden age of high-performance driving.

### **Mopar R5179247AF Transmission Overview**

The **Mopar R5179247AF** is a **4-speed automatic transmission** designed for **Chrysler, Dodge, and Jeep vehicles** from the **1990s and early 2000s**, particularly those equipped with **3.3L, 3.8L, or 4.0L V6 engines** (e.g., **318, 360, 5.2L Magnum, 5.9L Magnum**).

This transmission is a **popular aftermarket choice** for classic muscle cars, trucks, and SUVs due to its **reliability, availability of parts, and tunability**. Below is a detailed breakdown of its **pros and cons**, followed by a **final recommendation**.

---

### **Pros of the Mopar R5179247AF Transmission**

1. **Proven Reliability**

- The **R5179247AF** is a **well-established design** that has been used in millions of vehicles since the **1990s**. Many units last **200,000 miles** with proper maintenance.

- It is **less prone to catastrophic failure** compared to some modern transmissions, especially when kept in good condition.

2. **Strong Aftermarket Support**

- **Widely available parts** from Mopar, aftermarket suppliers (e.g., **Jegs, Summit Racing, RockAuto**), and **eBay**.

- **Common failures (e.g., valve body, torque converter, seals) have known fixes** and are **relatively inexpensive** to repair.

- **Tuneability** Works well with **ECU tuning (e.g., Haltech, Link, AEM)** for better performance, especially in **high-torque applications**.

3. **Good for High-Torque Applications**

- **Stronger than the stock 31T/41R transmissions** found in some older Chryslers.

- **Handles modifications better** than weaker **A604, A605, or 42RE transmissions** when properly supported by the drivetrain.

- **Common in 5.2L Magnum and 5.9L Magnum builds**, where extra strength is beneficial.

4. **Lower Cost Than Some Alternatives**

- **Used units** can be found for **$300 $800**, depending on condition.

- **New rebuilds** from **Mopar or aftermarket suppliers** (e.g., **Transmission Builders, Jegs**) are **cheaper than some modern transmissions**.

- **Repair costs are reasonable** compared to **TorqueFlite 42RE or 46RE**, which can be **more expensive to rebuild**.

5. **Easy to Work On**

- **Simple design** compared to modern **6-speed or 8-speed transmissions**.

- **Common tools and skills** are sufficient for basic maintenance (e.g., **fluid changes, seal replacements, valve body swaps**).

- **Many DIY repair guides** available online.

6. **Works Well with Stock and Modified Engines**

- **Stock 3.3L, 3.8L, 4.0L, 5.2L, and 5.9L engines** run it reliably.

- **Supports forced induction (turbo/supercharger)** when properly tuned and supported (e.g., **clutch, flywheel, rear end**).

- **Common in drag racing and street rod builds** due to its **durability and simplicity**.

7. **Good for Classic and Muscle Car Restorations**

- **Fits well in 70s 90s Chryslers, Dodges, and Jeeps** (e.g., **Charger, Challenger, Durango, Dakota**).

- **Less likely to cause drivetrain issues** than weaker stock transmissions when modified.

---

### **Cons of the Mopar R5179247AF Transmission**

1. **Electronic Valve Body Issues**

- **Early models (pre-2000) had electronic valve bodies** that can **fail over time**, causing **rough shifting or no shifting at all**.

- **Solenoid failures** are a **common issue** and require **replacement or reprogramming**.

- **Later models (post-2000) improved reliability**, but **mechanical valve bodies** (e.g., **A604-style**) are still **less refined** than modern **TorqueFlite 46RE or 48RE**.

2. **Slippage Under Heavy Load**

- **Can slip in high-torque situations** (e.g., **big turbo, supercharger, or heavy-duty towing**) if not properly supported.

- **Requires a strong clutch/flywheel setup** (e.g., **dual-mass flywheel, heavy-duty pressure plate**) to prevent **clutch failure**.

- **Not as strong as a 46RE or 48RE** in extreme power applications.

3. **Shift Linkage and Solenoid Wear**

- **Shift solenoids wear out** over time, leading to **delayed or erratic shifting**.

- **Shift linkage can stretch**, causing **rough or delayed upshifts**.

- **Requires periodic maintenance** (e.g., **solenoid cleaning, linkage adjustment**).

4. **Limited Overdrive Performance**

- **Only has one overdrive gear (4th gear)**, which is **not as efficient** as modern **6-speed or 8-speed transmissions**.

- **Not ideal for high-speed cruising** (e.g., **long highway drives**) compared to **46RE or 48RE**.

5. **Torque Converter Issues**

- **Stock torque converters are weak** and can **spin out** under high torque.

- **Requires an upgraded converter** (e.g., **Mopar 41T, 43T, or aftermarket converters**) for **forced induction builds**.

- **Converter pump failures** can lead to **no start or rough shifting**.

6. **Less Common in Modern Applications**

- **Not as widely used in newer builds** compared to **46RE, 48RE, or 6-speed transmissions**.

- **Fewer modern tuning solutions** compared to **TorqueFlite-based systems**.

7. **Potential for Internal Wear**

- **Clutch packs, bearings, and synchronizers** wear out over time, especially in **high-mileage units**.

- **Requires regular fluid changes** (every **30K 50K miles**) to prevent **premature failure**.

- **Rebuilds can be costly** if major components (e.g., **planetary gears, bearings**) are worn.

8. **Not Ideal for Extreme Power (Without Mods)**

- **Stock unit struggles with 600 hp** unless **heavily modified** (e.g., **clutch upgrades, converter, valve body swaps**).

- **Requires a strong drivetrain** (e.g., **heavy-duty rear end, driveshaft, differential**) to handle power.

---

### **Common Failure Points & Maintenance Tips**

**Issue** **Symptoms** **Solution**

----------- ------------- -------------

**Electronic Valve Body Failure** No shifting, rough shifts, check engine light Replace valve body, reprogram ECU

**Solenoid Wear** Delayed shifts, hesitation Clean solenoids, replace if needed

**Torque Converter Spin-Out** Whining, no acceleration Upgrade converter, check clutch

**Clutch Slippage** Engine revs but no forward motion Replace clutch/flywheel, check pressure plate

**Fluid Leaks** Low fluid, slipping Replace seals, gaskets, check for cracks

**Shift Linkage Stretch** Rough shifts, delayed engagement Adjust or replace linkage

**Bearing or Gear Wear** Grinding noises, hesitation Rebuild transmission

- **Change fluid every 30K 50K miles** (use **Mopar ATF 4 or Dexron VI**).

- **Inspect seals and gaskets** during rebuilds.

- **Upgrade the torque converter** if running forced induction.

- **Consider a valve body swap** (e.g., **A604-style mechanical**) for better reliability.

- **Support with a strong clutch/flywheel** in high-torque applications.

---

### **Final Recommendation**

#### **Who Should Buy the Mopar R5179247AF?**

- **Stock or lightly modified classic muscle cars, trucks, and SUVs** (e.g., **1990s 2000s Chrysler/Dodge/Jeep**).

- **Builds with 3.3L 5.9L V6/V8 engines** (especially **5.2L Magnum, 5.9L Magnum**).

- **Budget-conscious buyers** who want a **reliable, affordable transmission**.

- **DIYers** who enjoy working on transmissions and **tuning for better performance**.

- **Drag racing and street rod applications** where **simplicity and strength** are valued.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Found a Better Price. Buyer should verify this is the exact part needed before purchasing. Request a Return.

Parts must be resalable and in the original packaging. Changed My Mind. Add details like I tried to install this part, and it didn't fit. Electrical parts are not returnable.

With Stamp # 52854257AA. Just Didn't Like it.

part #: r5179247af price

• $5442.50

specifications autotransmissionsgo:

• for makes: Mopar
• mpn: R5179247af
• part type: Transmission
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 1 On The Diagram Is Included
• replaces part number: 5179247aa, 5179247ab, 68039352aa, 68104257aa, R5179247ab, R5179247ac, R5179247ad, R5179247ae

shipping autotransmissionsgo:

• cost: $402.50
• type: Fixed
• class: Freight
• service: Flat Rate Freight

payments autotransmissionsgo:

• other
• credit card: Discover
• wallet: Paypal

seller autotransmissionsgo:

• city: Pompano Beach, Florida
• rating: 99.7%
• # reviews: 3887

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: New

returns autotransmissionsgo:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer autotransmissionsgo:

• started: March 23, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock

Mopar R5179247AF Is Similar To:

• 04659559ac Mopar Transmission Range Sensor (50.6% similar) We dedicate ourselves to giving you the service and care that expect reminds come see us again. It is this experience and vendor relationships that brings to you...(June 14th, 2018)
• 04659676ac Mopar Transmission Range Sensor (50.6% similar) 0, town country, voyager with the trims of anniversary edition mini passenger van 4-DOOR, base convertible 2-DOOR, coupe cargo 3-DOOR, sedan sport utility wagon c v classic crossroad dream Eli equipped es ex express express FTC JX JX Le limited LX lxi r SE plus street cruiser route 66 SC STX touring...(April 1st, 2018)
• 1-04798152ad Mopar Transmission Rebuild Kit Jeep Wrangler Yj (38.1% similar) Gasket, filter and seal package. Brand new old stock automatic transmission rebuild kit for wrangler J...(December 16th, 2018)
• MOPAR 4659559AC Transmission Range Sensor (46.5% similar) Many new, original equipment parts are automatically included in the re manufacturing process. About the brand the mopar re manufacturing process begins with a complete disassembly, cleaning and inspection of the used part or core. Mopar's comprehensive remanufactured...(March 14th, 2014)
• 4659676ac Mopar Transmission Range Sensor (51.2% similar) 0, town country, voyager with the trims of anniversary edition mini passenger van 4-DOOR, base convertible 2-DOOR, coupe cargo 3-DOOR, sedan sport utility wagon c v classic crossroad dream Eli equipped es ex express express FTC JX JX Le limited LX lxi r SE plus street cruiser route 66 SC STX touring...(January 17th, 2018)
• 4761839pb Mopar Genuine (38.2% similar) Electrical parts are not returnable. Parts must be resalable and in the original packaging. Our jeep parts team is here to help. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer...(June 24th, 2018)
• 5003190aa Mopar Jeep Grand Cherokee Auto Transmission Tested (47.6% similar) Otherwise for estimate. Please message me thru before order is placed to get shipping charges. 2L, 4X4 please look at the compatibility list and read notes to make sure this will fit your application. Only applies to residential commercial is free shipping included. Transfer cases will not be ...(July 16th, 2018)
• 5078556aa Mopar Transmission Oil Pan Grand Caravan (46.3% similar) Came off a 2015 grand caravan with 6 speed automatic transmission...(June 3rd, 2018)
• 52120027ad Mopar Dodge Charger Automatic Transmission Oem (45.1% similar) Buyer pays return shipping. Over 2 acres of Chrysler jeep parts...(March 8th, 2018)
• 5285069aa Mopar Transmission For Various Dodge Jeep Vehicles (41.9% similar) Feel free to with any questions about part compatibility. Please match part numbers before deciding to purchase. Free flat rate shipping if offered is for the lower 48 us. This does not mean it is ready to be installed on your vehicle. Items are all cores and will most likely need to be refinished. ...(August 10th, 2018)
• 68003115ad Mopar Chrylser Hemi Oem Automatic Transmission Converter (41.1% similar) Here for more SRT-8 parts questions. What you see in the photos is will receive. Please review all photos for further details...(July 10th, 2018)