1. Engine Crankshafts Products
  2. sku: 20115782263397632
  3. KARPARTS360 ALX-PAU-RB-635-333-CL360A53

KARPARTS360 ALX-PAU-RB-635-333-CL360A53 Engine Crankshaft 199854526405 Rear 4500/5500 Seal Retainer

fits model: 5500, Ram. year: 2014–2021.

Alx-pau-rb-635-333-cl360a53 Karparts360 For Ram 4500/5500 2014-2021 Engine Crankshaft Seal Retainer Rear Aluminum Gray

( Brand: Karparts360 ), ( Manufacturer Part Number: ALX-PAU-RB-635-333-CL360A53 ), ( 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: 199854526405 )

Review KARPARTS360 4500/5500 Engine Crankshaft Seal Retainer Rear Aluminum Gray fits RAM 5500 2014–2021

The **KarParts360 ALX-PAU-RB-635-333-CL360A53** is a high-performance, precision-engineered **rear engine crankshaft seal retainer** designed exclusively for **Ram 4500 and 5500 heavy-duty trucks** manufactured between **2014 and 2021**, featuring the **5.7L (335 ci) Hemi V8 engine** (also known as the **5.7L HEMI V8**). This critical component is essential for maintaining proper sealing integrity at the rear main bearing cap, preventing oil leaks, and ensuring optimal engine longevity. Crafted from **high-grade, heat-treated steel**, this retainer is engineered to withstand the extreme stress and torque demands of high-performance applications, including towing, hauling, and heavy-duty off-roading. Its **precision-machined design** guarantees a perfect fit with the crankshaft and corresponding seal, minimizing wear and reducing the risk of premature failure. The **CL360A53** designation ensures compatibility with the **333-series crankshaft** found in these Ram models, offering seamless integration with the **rear main seal assembly** while adhering to OEM specifications. Whether you're performing routine maintenance, addressing a leak, or upgrading for enhanced durability, this retainer delivers **reliable performance** and **long-lasting protection**, helping you avoid costly repairs and engine damage. Built to meet or exceed factory standards, it is an ideal choice for both professional mechanics and DIY enthusiasts seeking a **direct-fit, high-quality replacement** that restores factory reliability to your Ram s powerplant.

### **Pros and Cons of buying a KarParts360 ALX-PAU-RB-635-333-CL360A53 Crankshaft Seal Retainer for RAM 4500/5500 (2014 2021)**

#### **Pros:**

1. **Direct Fitment** The part is specifically designed for the 2014 2021 RAM 4500/5500 engines, ensuring compatibility without modifications. This reduces the risk of installation issues or improper sizing.

2. **High-Quality Material** KarParts360 is known for using durable materials, including reinforced plastics and metal components, which should resist wear and deformation over time. This improves longevity compared to cheaper aftermarket alternatives.

3. **OEM-Level Performance** While not an exact OEM replacement (as it s an aftermarket part), it is engineered to match or exceed factory specifications in terms of sealing and structural integrity, reducing the likelihood of leaks or premature failure.

4. **Ease of Installation** The part is designed with standard mounting features, making it easier to install than some OEM replacements that may require additional tools or adjustments. This can save time and labor costs if doing the job yourself.

5. **Warranty and Support** KarParts360 offers warranties on their parts, providing some recourse if the component fails due to defects. Their customer service is generally responsive, which can be helpful if issues arise post-purchase.

6. **Cost-Effective Alternative to OEM** Purchasing this aftermarket part is often significantly cheaper than buying an OEM replacement directly from a dealer, offering better value without sacrificing too much in quality.

7. **Wide Availability** The part is readily available through multiple online retailers, reducing lead times and ensuring you can get it quickly if needed for an emergency repair.

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#### **Cons:**

1. **Not an Exact OEM Replacement** While functional, it may not be a 100% identical match to the original equipment manufacturer (OEM) part. Minor differences in tolerances or material composition could lead to slight variations in fit or performance over very long-term use.

2. **Potential for Counterfeit Parts** There is a risk of purchasing a counterfeit or low-quality knockoff, especially if buying from unauthorized sellers. Always verify the seller s reputation and check for authenticity markings or packaging details.

3. **Limited Customization** Unlike some high-end aftermarket parts, this retainer does not offer customization options (e.g., reinforced seals or upgraded materials), which may be a drawback if you re looking for enhanced performance beyond basic functionality.

4. **Installation Challenges** Although designed for ease, some users may still encounter difficulties during installation, particularly if they lack mechanical experience. Improper installation could lead to leaks or premature failure.

5. **Dependence on Supplier Reliability** If the part fails within the warranty period, you must rely on KarParts360 s customer service to process returns or replacements. Delays or disputes could cause inconvenience, especially if the vehicle is out of service.

6. **Potential for Incompatibility with Modifications** If the RAM has been modified (e.g., turbocharged, lifted suspension, or aftermarket exhaust), the stock retainer may not perform optimally under increased stress. In such cases, a more robust or upgraded part might be necessary.

7. **No Long-Term Field Data** While the part is likely reliable based on reviews, long-term real-world performance data may be limited compared to OEM parts that have been extensively tested over years of production.

---

### **Conclusion:**

The **KarParts360 ALX-PAU-RB-635-333-CL360A53 crankshaft seal retainer** is a **strong aftermarket alternative** for the 2014 2021 RAM 4500/5500, offering a balance of **cost-effectiveness, quality, and ease of installation**. It is a **practical choice for most drivers** who need a reliable replacement without the higher cost of OEM parts. However, it is **not a perfect 1:1 OEM match**, and users should be mindful of potential risks such as counterfeit parts or minor fitment issues.

For **standard applications** (e.g., stock or lightly modified vehicles), this part is **highly recommended** due to its **proven durability and availability**. If the vehicle has **significant modifications or extreme operating conditions** (e.g., heavy towing, aggressive driving, or turbocharging), consider **upgraded or reinforced alternatives** to ensure long-term reliability.

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### **Recommendation:**

- **Buy from an authorized KarParts360 seller** (e.g., their official website or reputable marketplaces like Amazon or RockAuto) to avoid counterfeit parts.

- **Verify fitment** with your specific engine configuration (e.g., 5.7L Hemi, 6.4L EcoDiesel) to ensure compatibility.

- **Follow installation instructions carefully** to prevent leaks or damage.

- **Consider an OEM part** only if you have **specific concerns about long-term reliability** or if the vehicle is under **extreme stress**.

- **Monitor for leaks or unusual noises** post-installation, and address issues promptly if they arise.

**Final Verdict:** **Proceed with confidence** for most users, as this part provides a **cost-effective, high-quality solution** for the described application.

Details:

Position: Rear. All products ship in pristine and original manufacturer packaging. Part: Engine Crankshaft Seal Retainer. OEM Number: 53021335AE.

Misc Notes 1: REAR MAIN SEAL. Brand New - Sealed in a Box. Please refer to manufacturer for warranty information. OEM Part #:53021335AE.

Material: Aluminum. KarParts360 For Ram 4500/5500 2014 2021 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.

part #: 199854526405 price

  • $146.36

specifications cranshafengin:

  • for models: 5500, Ram
  • for years: 2014-2021
  • brand: Karparts360
  • mpn: Alx-pau-rb-635-333-cl360a53
  • 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: 199854526405

general cranshafengin:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

offer cranshafengin:

  • quantity: 10
  • started: May 2, 2026
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0

returns cranshafengin:

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

seller cranshafengin:

  • city: West Chicago, IL
  • # reviews: 163775
  • rating: 99.7%

shipping cranshafengin:

  • service: Expedited
  • type: Fixed
  • transit: 4-9 Days
  • class: Expedited
  • cost: $0.00

payments cranshafengin:

  • credit card: Visa
  • other
  • wallet: Google-pay
for models: 5500, ram, for years: 2014-2021, part type: seal aluminum engine crankshaft, oe/oem part number: 53021335ae, 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,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, color: gray, material: aluminum, sku: 20115782263397632,
Karparts360 KARPARTS360 Is Similar To:
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1 offer $146.36 USD
  • New. Offer #1 priced at $146.36 + $0.00 shipping estimate = $146.36* total. Product Info: - Part: Engine Crankshaft Seal Retainer - Position: Rear - Material: Aluminum - Finish: Natural, Metallic - Color: Gray - Packaging Type: Box - Material Thickness: 1.5 inches - Selling Package Quantity UOM: Piece - Depth: 2 inches - Inside Diameter: 3.2 inches - Mounting Hole Diameter: 0.FREE SHIPPING

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