fits model: 3500, Ram. make: Dodge. year: 2003–2009.

( Brand: Karparts360 ), ( Manufacturer Part Number: ALX-PAU-RB-635-333-CL360A52 ), ( Part Type: Seal Aluminum Engine Crankshaft ), ( Oe/oem Part Number: 53021335ae ), ( Material: Aluminum ), ( Finish: Natural, Metallic ), ( Item Weight: 1.3000 ), ( Fitment Type: Direct Replacement ), ( Generic Keywords 1: Part ), ( Intended Use: Automobiles ), ( Misc Fitment Notes: See Notes ), ( Placement On Vehicle: Rear ), ( Manufacturer Warranty: 1 Year ), ( Color: Gray ), ( UPC: 199854526399 )
The **KarParts360 ALX-PAU-RB-635-333-CL360A52** is a high-quality, precision-engineered **rear crankshaft seal retainer** specifically designed for the **2003 2009 Dodge Ram 3500** models equipped with the **5.7L (333 cubic inch) Magnum V8 engine** (also known as the **5.7L HEMI ** or **5.7L Magnum**). This critical component plays a vital role in maintaining the integrity of the engine s rear main seal assembly, ensuring proper sealing and preventing oil leaks that could compromise engine performance and longevity. Crafted from durable **cast aluminum** with a robust, interference-fit design, this retainer is engineered to securely hold the crankshaft seal in place, reducing wear and tear on both the seal itself and the engine s internal components. The **CL360A52** designation ensures compatibility with the **5.7L Magnum s** specific crankshaft pulley and harmonic balancer interface, providing a snug, interference-free fit that resists loosening under high engine loads, towing forces, or aggressive driving conditions. Whether you're performing routine maintenance, addressing a persistent oil leak, or upgrading your engine s sealing system for enhanced reliability, this retainer delivers the precision and durability required to keep your **Dodge Ram 3500 s** powerful V8 running smoothly. Its **OEM-level quality** ensures seamless integration with the factory crankshaft seal, making it an ideal replacement for worn or damaged retainers, while also serving as a proactive solution for drivers seeking to prevent future sealing issues. Built to withstand the demands of heavy-duty applications including towing, hauling, and off-road use this retainer is a must-have for anyone looking to maintain the peak performance and longevity of their **5.7L Magnum-powered Ram 3500**.
### **Pros and Cons of buying a KarParts360 ALX-PAU-RB-635-333-CL360A52 Crankshaft Seal Retainer (Rear) for a 2003 2009 Dodge Ram 3500**
#### **Pros:**1. **Direct Fitment** The part is specifically listed for the 2003 2009 Dodge Ram 3500 with the 6.7L Cummins engine, ensuring compatibility without modification.
2. **Quality Construction** KarParts360 is a reputable aftermarket supplier known for durable, high-performance parts designed to meet or exceed OEM standards.
3. **Ease of Installation** The retainer is a straightforward replacement part, typically requiring minimal tools and labor, reducing downtime for repairs.
4. **Prevents Further Damage** A failing crankshaft seal retainer can lead to oil leaks, crankshaft damage, or even engine failure. Replacing it proactively avoids costly repairs.
5. **Cost-Effective** Compared to labor-intensive engine rebuilds or replacements, this part is relatively inexpensive, making it a practical solution for maintenance.
6. **Warranty Coverage** KarParts360 often provides warranties on their parts, offering peace of mind in case of defects or premature failure.
7. **Availability** The part is readily available online, reducing wait times compared to sourcing from dealerships or specialty shops.
#### **Cons:**1. **Potential Counterfeit Concerns** Some aftermarket parts, including those from third-party sellers, may be counterfeit or subpar. Ensuring purchase from an authorized KarParts360 dealer minimizes this risk.
2. **Installation Challenges** While the part itself is simple, improper installation (e.g., overtightening or misalignment) can cause leaks or damage to surrounding components. DIYers without experience may need professional help.
3. **Limited Brand Recognition** Unlike OEM parts, KarParts360 is not a household name, which may make some buyers hesitant despite the part s proven reliability.
4. **Compatibility Verification Needed** Double-checking the exact engine variant (e.g., 6.7L Cummins with specific turbocharger or emissions configurations) ensures the part fits without issues.
5. **Resale Value Impact** Using aftermarket parts may slightly reduce the vehicle s resale value compared to OEM replacements, though this is rarely a concern for Cummins engines where aftermarket parts are widely trusted.
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### **Conclusion**
The **KarParts360 ALX-PAU-RB-635-333-CL360A52 crankshaft seal retainer** is a **reliable, cost-effective, and direct-fit solution** for addressing rear crankshaft seal retainer failure in a 2003 2009 Dodge Ram 3500 with a 6.7L Cummins engine. Its advantages such as ease of installation, durability, and compatibility outweigh the minor drawbacks, particularly for DIYers or those seeking a quick, budget-friendly repair. The part is well-suited for both preventive maintenance and emergency replacements, provided it is sourced from an authorized seller to avoid counterfeit issues.
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### **Recommendation**
**Buy the part from an authorized KarParts360 dealer or a trusted online retailer** (e.g., RockAuto, Summit Racing, or the official KarParts360 website) to ensure authenticity. If unsure about installation, consult a Cummins-specialized mechanic to avoid mistakes. For most users, this is the **best balance of quality, cost, and convenience** for the described application. Prioritize verifying the exact engine configuration (e.g., turbocharger type, emissions year) to confirm a perfect fit.
All products ship in pristine and original manufacturer packaging. Part: Engine Crankshaft Seal Retainer. Please refer to manufacturer for warranty information. Position: Rear.
OEM Part #:53021335AE. Misc Notes 1: REAR MAIN SEAL. Brand New - Sealed in a Box. KarParts360 For Dodge Ram 3500 2003 2009 Engine Crankshaft Seal Retainer Rear Aluminum Material Natural, Metallic Finish Gray 1.5 Inches Thickness 0.125 Mounting Hole Diameter: Item condition: Brand New in Original Box.
Material: Aluminum. OEM Number: 53021335AE.