CROWN AUTOMOTIVE SALES CO 4137726 Ring Wj Wk Xk Kj Mj 848399002973 Co.

( Brand: Crown Automotive Sales Co ), ( Manufacturer Part Number: 4137726 ), ( Part Type: Ring ), ( UPC: 848399002973 ), ( Color: Black )

Review CROWN AUTOMOTIVE SALES CO Co. O ring Jeep Wj Wk Xk Kj Mj fits XJ

The **Crown 4137726 O-Ring** is a precision-engineered sealing solution specifically designed for the critical fluid and hydraulic systems found in Jeep vehicles spanning the iconic Wrangler (WJ), Liberty (WK), Renegade (XK), Patriot (XJ), and Gladiator (MJ) generations. Crafted from high-quality **nitrile rubber (NBR)**, this O-ring delivers exceptional resistance to petroleum-based oils, fuels, and hydraulic fluids, making it an ideal choice for applications such as differential housings, transfer case seals, and other high-pressure, high-stress environments where reliable sealing is paramount. With a **durometer hardness of 70 5**, the O-ring strikes an optimal balance between flexibility and durability, ensuring a tight, long-lasting seal that resists deformation under thermal expansion and mechanical stress. Its **smooth, consistent cross-section** minimizes friction and wear, while the **precise internal and external dimensions** (measured at 1.775" inner diameter and 2.125" outer diameter with a 0.175" cross-section) guarantee a perfect fit within the designated O-ring groove, preventing leaks and contamination that could compromise drivetrain performance. Whether used in off-road adventures, daily commutes, or high-performance modifications, this O-ring from Crown known for its reliability and engineering excellence provides a dependable barrier against fluid leakage, ensuring seamless operation and extended longevity for Jeep s rugged drivetrains. Built to withstand the demands of both urban and extreme off-road conditions, it is a must-have replacement for mechanics and enthusiasts seeking to maintain peak efficiency in their Jeep s power delivery systems.

**Pros and Cons of buying a Crown 4137726 O-Ring for Jeep WJ/WK/XK/KJ/XJ/MJ Models**

1. **Compatibility** The Crown 4137726 is a widely recognized part number for the transfer case output seal in Jeep models, including WJ, WK, XK, KJ, XJ, and MJ generations. This ensures a direct fit without modification, reducing the risk of installation errors.

2. **Quality and Durability** Crown is a reputable manufacturer known for producing reliable automotive seals. Their O-rings are typically made from high-quality materials like nitrile rubber, which resists oil, fuel, and heat, extending the seal s lifespan under normal operating conditions.

3. **Ease of Installation** Since it is a standard replacement part, it can be installed by most mechanics or even experienced DIYers with basic tools. The design is straightforward, and the part is readily available, reducing downtime.

4. **Cost-Effective Solution** Compared to some aftermarket or OEM alternatives, Crown offers a balance between affordability and performance. It is often priced lower than original equipment manufacturer (OEM) parts while maintaining reliability.

5. **Widespread Availability** This part is stocked by many auto parts retailers, both online and in physical stores, making it easy to purchase without long wait times or special ordering.

6. **Prevents Leaks** A failing transfer case output seal can cause fluid leaks, leading to reduced lubrication, increased wear, and potential damage to the transfer case. Replacing it with a Crown O-ring ensures a proper seal, preventing leaks and maintaining system integrity.

7. **Compatibility with Aftermarket Upgrades** If you ve modified your Jeep s transfer case or drivetrain, this seal is likely to fit standard aftermarket components as well, making it a versatile choice.

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1. **Potential Counterfeit Concerns** Like many popular automotive parts, the Crown 4137726 O-ring may be subject to counterfeit products, especially when purchased from untrusted sellers. Counterfeit parts may fail prematurely or not fit correctly, leading to additional damage or the need for re-replacement.

2. **Limited Longevity in Harsh Conditions** While nitrile rubber is durable, extreme temperatures, prolonged exposure to harsh chemicals, or heavy loads can degrade the seal over time. If your Jeep is used in off-road or extreme conditions frequently, the seal may require more frequent inspection or replacement.

3. **Installation Challenges for Inexperienced DIYers** Although the part itself is simple, removing the old seal and installing the new one may require disassembling parts of the transfer case or drivetrain. Improper handling during installation (e.g., damaging the seal or not cleaning the mating surface properly) can lead to leaks or premature failure.

4. **Price Variability** While generally affordable, prices can vary significantly depending on the retailer. Some online marketplaces or specialty shops may charge premium prices, especially for "new old stock" (NOS) or "reconditioned" parts.

5. **Compatibility with Modified Transfer Cases** If your Jeep has been heavily modified (e.g., with aftermarket transfer cases or custom drivetrains), the Crown O-ring may not fit perfectly. Always verify compatibility with your specific setup before purchasing.

6. **Limited Warranty or Return Options** Some retailers offer limited warranties on O-rings, while others may not. If the part fails shortly after installation due to manufacturing defects, returning it for a replacement may be difficult, depending on the seller s return policy.

7. **Environmental and Material Concerns** Nitrile rubber, while durable, is not biodegradable. If environmental sustainability is a priority, you may need to consider alternative materials or brands that offer eco-friendly options (though these are less common for high-performance O-rings).

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The Crown 4137726 O-ring is a solid, cost-effective choice for replacing the transfer case output seal in Jeep models from the WJ to the MJ generations. Its compatibility, durability, and ease of installation make it a practical option for both mechanics and DIY enthusiasts. However, potential buyers should be cautious of counterfeit products, ensure proper installation, and consider their Jeep s specific usage conditions. For most standard applications, this part will provide reliable performance and prevent costly leaks or transfer case damage.

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1. **Purchase from a Reputable Source** Buy the Crown 4137726 O-ring from well-known retailers like RockAuto, Amazon (with verified seller reviews), or local auto parts stores with good return policies. Avoid suspiciously cheap deals that may indicate counterfeit goods.

2. **Verify Compatibility** Double-check that the part number (4137726) matches your Jeep s exact transfer case model. Some later Jeep models or aftermarket transfer cases may require a slightly different seal.

3. **Prepare for Installation** Gather the necessary tools (e.g., seal puller, torque wrench, clean rag) and follow a trusted installation guide (such as those from Jeep forums or manufacturer resources) to avoid damaging the seal or surrounding components.

4. **Inspect the Transfer Case** While replacing the seal, take the opportunity to inspect the transfer case for signs of wear, leaks, or damage. Address any other issues to prevent future problems.

5. **Consider a Higher-Quality Alternative if Needed** If your Jeep is used in extreme conditions or you prioritize longevity, explore premium brands like **Dayco** or **Gates**, which offer enhanced durability and sometimes better resistance to heat and chemicals.

6. **Follow Maintenance Best Practices** Regularly check the transfer case fluid level and condition, and replace it according to the manufacturer s recommendations (typically every 30,000 60,000 miles). Proper fluid maintenance will extend the life of the O-ring and transfer case.

By following these steps, you can confidently install the Crown 4137726 O-ring and ensure it performs reliably for your Jeep s drivetrain.

Details:

Condition: New. Part Number: 4137726. Specifications: MPN4137726, Brand Crown Automotive, Part Type Engine Crankcase Vent O-Ring, Construction Rubber, Color Black, Hardware's Existing Hardware, Sold As Each, Quantity in Package1, required Per Vehicle1, UPC Stove Crankcase Ventilation O-Ring for 99-06 Jeep WJ, WG, WK, WJ Grand Cherokee, 2006 XK, XH Commander, 02-06 Liberty, Dodge 00-06 Dakota, Drongo, Ram Trucks, All w/ 3.7L Engine or 4.7L Engine, Vacuum Diaphragm 1987 1995 YJ Wrangler, 1984 1993 XJ 1986 1992 MJ Comanche Axle Disconnect.

Sold individually. Manufacturer: Crown Automotive.

part #: 4137726 prices

• $16.06-$24.82

specifications emissyste:

• for models: Xj
• for makes: Jeep
• brand: Crown Automotive Sales Co
• mpn: 4137726
• part type: Ring
• upc: 848399002973
• color: Black

payments emissyste:

• credit card: Visa
• other
• wallet: Apple-pay

seller emissyste:

• city: Apple Valley, California
• rating: 99.9%
• # reviews: 16522

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

returns emissyste:

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

shipping emissyste:

• cost: $0.00
• carrier: FedEx
• transit: 3-6 Days
• class: Standard
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery

offer emissyste:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: June 6, 2026

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