MOPAR W0133-1976725-MPR Rear Crankshaft Seal
fits model: 1500, Ram, Classic. make: Mopar. year: 2019–2021.
( Manufacturer Part Number: W0133-1976725-MPR ), ( Part Type: Seal Crankshaft ), ( Product Type: Engine ), ( California Prop 65 Warning: Cancer And Reproductive Harm ), ( Fitment Type: Direct Replacement ), ( Compatible Make S : Ram, Dodge, Jeep, Chrysler ), ( Compatible Model S : 1500 Classic, 1500, Charger, Challenger, Durango, Grand Caravan ), ( Fitnote: W/o X-pipe; With X-pipe ), ( Product Subtype: Crankshafts ), ( Product Details: Engine Crankshaft Seal ), ( Department: Replacement )
Review MOPAR Rear Crankshaft Seal fits RAM CLASSIC 1500 2019–2021
The **MOPAR W0133-1976725-MPR Rear Crankshaft Seal** is a high-performance, factory-specified replacement seal designed exclusively for the **2019-2021 Ram 1500 Classic** with the **3.6L Pentastar V6 engine**, ensuring a precise fit and optimal sealing performance. Engineered with **high-quality elastomer materials**, this seal is built to withstand the demanding conditions of modern automotive applications, including high temperatures, pressure fluctuations, and constant engine movement, while maintaining long-term reliability. The **metal-reinforced lip design** provides superior durability, reducing the risk of premature wear or leakage that can lead to oil contamination, crankshaft damage, or costly internal engine issues. This seal is engineered to meet or exceed **OEM specifications**, ensuring a tight, consistent seal that prevents oil from seeping past the crankshaft, thus protecting critical engine components from lubrication starvation and extending the lifespan of your vehicle s drivetrain. Whether you're performing routine maintenance, addressing a leak, or upgrading during a major service, the **MOPAR W0133-1976725-MPR** delivers the precision and performance expected from a trusted brand, helping you restore factory-like protection and confidence in your Ram s power delivery.
The **Mopar W0133-1976725-MPR** is a rear crankshaft seal designed for the **2019 2021 Ram 1500 Classic (3.6L Pentastar V6)**. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of the Mopar W0133-1976725-MPR Seal**
1. **OEM Quality and Fitment**
The seal is manufactured by **Mopar**, Chrysler s official parts division, ensuring it meets the same engineering standards as the original equipment. This reduces the risk of premature failure or improper sealing compared to aftermarket alternatives. The part is specifically designed for the **2019 2021 Ram 1500 Classic**, ensuring a precise fit without modifications.
2. **Reliability and Durability**
Mopar parts are built to last, often outperforming lower-quality aftermarket seals in terms of longevity. The **Pentastar V6** is a high-performance engine, and an OEM seal minimizes the risk of leaks or damage to the crankshaft or transmission components. The seal is typically made from high-quality rubber compounds that resist oil degradation and heat better than generic replacements.
3. **Warranty and Support**
Purchasing from **Mopar or an authorized dealer** often comes with a warranty (typically 12 24 months), providing peace of mind. If the seal fails prematurely due to a defect, you can return it for replacement or refund. Aftermarket seals may not offer the same level of support.
4. **Compatibility with Factory Specifications**
The seal is engineered to work seamlessly with the **6-speed automatic transmission (62TE)** and the **rear main seal housing** in the 2019 2021 Ram 1500 Classic. This reduces the risk of torque issues, leaks, or damage to the transmission input shaft or crankshaft.
5. **Ease of Installation**
Since it is an OEM part, the seal is designed to install without requiring excessive modification or special tools beyond what a typical mechanic would have. The housing and gasket surfaces are compatible, reducing the chance of installation errors that could lead to leaks.
6. **Brand Trust and Availability**
Mopar is a well-established brand with a strong reputation for automotive parts. The seal is widely available through **dealerships, online retailers (e.g., RockAuto, MoparDirect), and auto parts stores**, making it easier to source than niche aftermarket alternatives.
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### **Cons of the Mopar W0133-1976725-MPR Seal**
1. **Higher Cost Compared to Aftermarket**
The **Mopar seal is more expensive** than many aftermarket alternatives (often **$50 $100 **, depending on the retailer). While the price reflects quality, budget-conscious buyers may opt for cheaper seals, though this could compromise longevity.
2. **Potential Overkill for High-Mileage or Damaged Engines**
If the **crankshaft or seal housing is worn, bent, or damaged**, replacing just the seal may not fully resolve the issue. In such cases, additional repairs (e.g., crankshaft straightening, housing replacement) may be necessary, making the OEM seal less cost-effective. A mechanic should inspect the engine before installation.
3. **Limited Customization**
Unlike some aftermarket seals, the Mopar part does not offer variations in materials (e.g., silicone vs. nitrile) or special coatings for extreme conditions. If you re running **high-performance modifications (e.g., forced induction, aggressive towing)**, an aftermarket seal with enhanced heat resistance might be preferable.
4. **Installation Complexity for DIYers**
While not overly difficult, replacing a **rear crankshaft seal** requires **precision and proper tooling** (e.g., seal installer, torque wrench, transmission jack). DIYers without experience may struggle, leading to potential leaks or damage. Professional installation is often recommended.
5. **Lead Times at Dealerships**
If purchasing from a **dealership**, stock availability can vary, and lead times may be longer than buying from an online retailer. This could delay repairs if you re in a hurry.
6. **Potential for Counterfeit Parts**
While rare, purchasing from **unauthorized sellers** (e.g., third-party online marketplaces) could result in **fake Mopar parts**. Always buy from **verified sources** (official Mopar website, dealerships, or reputable retailers like RockAuto) to avoid this risk.
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### **Conclusion**
The **Mopar W0133-1976725-MPR** is a **high-quality, reliable choice** for replacing the rear crankshaft seal in the **2019 2021 Ram 1500 Classic (3.6L Pentastar)**. Its **OEM specifications, durability, and warranty support** make it the safest option for most drivers. However, the **higher cost and potential overkill for severely worn engines** are drawbacks to consider.
If your engine is in **good condition** and you prioritize **long-term reliability**, the Mopar seal is the **best recommendation**. If you re on a **tight budget** or have a **highly modified engine**, an **aftermarket seal from a reputable brand (e.g., Fel-Pro, Gates, or Sealed Power)** could be a cost-effective alternative **but only if sourced from a trusted supplier**.
**Final Recommendation:**- **Best Overall Choice:** **Mopar W0133-1976725-MPR** (for most drivers seeking OEM reliability).
- **Budget Alternative:** A **high-quality aftermarket seal** (e.g., **Fel-Pro 3100 or Gates Kits**) from a **verified retailer**, but ensure it matches the **OEM part number and specifications**.
- **Always inspect the crankshaft and housing** before installation to avoid unnecessary repairs.
For the **2019 2021 Ram 1500 Classic**, the Mopar seal is the **safest and most trusted option** when properly installed.
Details:
Features: Ideal solution to keep your vehicle in top shape. Meticulously engineered to ensure excellent performance. Highly resistant to wear and tear for long-lasting service. Want your prized possession to look and perform the way it was designed.
Made using the latest manufacturing technology to meet highest quality standards, Mopar parts provide outstanding performance and durability. Designed according to the highest quality standards. These products are guaranteed to outperform any aftermarket replacement parts in every way. Rear Crankshaft Seal W MPR by Mopar.
Plus, they are strong enough to handle the toughest abuse, so will serve you year in and out. Made from the finest materials utilizing sophisticated manufacturing techniques, they deliver unparalleled durability and a perfect fit. They will offer reliable service for a long time, making every ride safe and enjoyable experience. Make your vehicle look and perform like new without spending a fortune with superior Mopar products.
part #: w01331976725 price
- $130.36
specifications cranshafengin:
- for models: 1500, Ram, Classic
- for makes: Mopar
- for years: 2019-2021
- mpn: W0133-1976725-mpr
- part type: Seal Crankshaft
- product type: Engine
- california prop 65 warning: Cancer And Reproductive Harm
- fitment type: Direct Replacement
- compatible make s : Ram, Dodge, Jeep, Chrysler
- compatible model s : 1500 Classic, 1500, Charger, Challenger, Durango, Grand Caravan
- fitnote: W/o X-pipe; With X-pipe
- product subtype: Crankshafts
- product details: Engine Crankshaft Seal
- department: Replacement
general cranshafengin:
- Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
- condition: New
payments cranshafengin:
- other
- wallet: Apple-pay
- credit card: Visa
returns cranshafengin:
- time: 30 Days
- policy: Returns Accepted
- paid by: Seller
seller cranshafengin:
- # reviews: 370636
- city: Shawnee, Kansas
- rating: 99.0%
shipping cranshafengin:
- cost: $15.00
- type: Fixed
- carrier: UPS
- class: Standard
- service: UPS Ground
- transit: 2-5 Days
offer cranshafengin:
- started: April 30, 2026
- sold: 0
- options: Ship-to-home
- quantity: 5
- availability: In Stock
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