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A Jeep rear differential cover is a safeguard for the differential gear, a vital component that aids the rear wheels in turning. It houses the differential gears and lubricating oil. Without it, the gears would be exposed to debris and damage, which could lead to costly repairs. Several types of Jeep differential covers are available, including the following.
Stock Differential Covers:
Stock differential covers are those that come with the vehicle from the manufacturer. They are made of thin metal, providing minimal protection against external debris and damage. Stock covers are not suitable for off-road applications.
Aftermarket Differential Covers:
Aftermarket covers are designed by companies other than the vehicle manufacturer. They are made of thicker steel or aluminum, making them more suitable for off-road applications. Aftermarket covers also come with additional features such as cooling fins or fill holes that make them more effective.
Heavy-Duty Differential Covers:
These covers are designed for extreme applications, such as rock crawling. They are made of the thickest material and are designed to withstand the most challenging conditions.
Aluminum Differential Covers:
Aluminum differential covers are lightweight. They are suitable for applications where reducing the vehicle's weight is crucial. Aluminum also has the added benefit of not rusting.
Cast Iron Differential Covers:
Cast iron differential covers are extremely durable. They are often used in heavy-duty applications, such as in trucks used for towing or transporting heavy loads. Cast iron is also heat resistant, making it a good choice for applications where the differential can get extremely hot.
Ceramic Differential Covers:
These covers are less common due to their high cost. They are often used in racing applications, where performance is critical. Ceramic covers have the added benefit of being able to withstand extreme temperatures.
Specs for the Jeep differential cover will vary depending on the model. Here are some general specifications to expect:
Material
The differential case is made of steel, cast iron, or aluminum. Each material has its advantages. Aluminum is lightweight, while steel is strong and robust.
Differential type
The covers use either locking or limited-slip differentials. The locking differential covers provide traction on extreme terrain. Limited-slip differentials are great for on-road and off-road driving.
Size and dimensions
Differential covers come in different sizes depending on the vehicle model and axle size. Measure the length, width, and bolt pattern to get the right size for the specific vehicle.
Gear ratio
The gear ratio is determined by the differential type. Common ratios for locking differentials are 3.73:1 and 4.10:1. Limited-slip differentials have a ratio of about 3.55:1.
Drain and fill plug
Drain and fill plugs are located at specific positions on the differential cover. The position and thread size of the plugs will vary depending on the model.
Mounting bolts
These are used to attach the cover to the differential housing. They come in different sizes and thread types depending on the model.
Fin design
Fins are added to the differential cover to improve heat dissipation. The number, size, and spacing of the fins vary depending on the design.
Proper maintenance is important to keep the differential cover in good condition. Here are some maintenance tips:
Check the oil level
Inspect the oil level at least once a month. If the oil is low, top it up to the recommended level. Use the oil recommended for the specific vehicle model.
Change the oil regularly
Change the oil after every 30,000 miles or according to the manufacturer's instructions. Use a quality oil suitable for the specific vehicle model.
Inspect for leaks
Check the differential cover for signs of oil leaks. If there are any leaks, replace the gasket or differential cover.
Check for damage
Inspect the differential cover for cracks, dents, or other damage. Replace the cover if it is damaged beyond repair.
Clean the differential cover
Remove dirt and debris from the cover. This will prevent the dirt from getting into the oil and damaging the gears.
Choosing the ideal Jeep differential cover for business stock requires careful consideration of several factors, including:
Differential cover material
Consider the differential type
Jeep models come with differentials with different specifications. For example, the Dana 30, Dana 44, and AMC 20 are common in Jeep models. When choosing a differential cover for resale, specify the differential type and model to avoid incompatibility issues.
Differential cover design
Stock differential covers are plain with a JEEP logo. When choosing a cover for resale, consider the design and finish. Some covers are plain while others are adorned with logos and graphics. Also, consider the color and finish coating, whether painted or powder coated.
Purpose and application
When choosing a differential cover for resale, consider purpose and application. Is it for on-road use or off-road use? Covers designed for off-road use are more robust and durable than those designed for on-road use. Also, differential covers for heavy applications are more expensive than those for light applications.
Clearance and installation requirements
Lift kits and larger tires provide more ground clearance for the vehicle. When choosing a differential cover for the lifted vehicle, consider the differential cover size. Larger differential covers may not fit properly under a lifted vehicle with fitted larger tires. Also, large differential covers require more installation space, which may not be available in a lifted vehicle.
Brand reputation
When choosing a differential cover for resale, consider brand reputation. Popular brands offer quality products and have loyal customers. Research to find reputable brands that offer differential covers in various specifications.
For those feeling a bit more adventurous, replacing the rear differential cover can be a DIY-friendly task. Here's a step-by-step guide to help replace the Jeep rear differential cover:
Prepare the Vehicle
Set the Jeep on a level ground and activate the parking brake. Loosen the lug nuts on the tires and elevate the vehicle using a jack. For stability, place jack stands under the vehicle, and then the wheels may be removed to provide better access.
Drain the Differential Oil
Position a drain pan beneath the differential to collect the oil and remove the cover fill plug using a wrench. Next, carefully remove the cover bolts with a socket wrench and gently pry the cover free using a gasket scraper. Allow the oil to drain completely before removing the cover.
Remove the Old Gasket
Use a gasket scraper or a soft-bristled brush to carefully remove any remnants of the old gasket from the differential housing and the differential cover. Take care not to damage the underlying surface.
Install the New Differential Cover
Position the new cover over the differential housing, ensuring that the bolt holes are aligned. Then, insert the cover bolts and tighten them in a crisscross pattern to distribute the pressure evenly. Follow the manufacturer's torque specifications.
Refill with Differential Oil
Pour the recommended differential oil through the fill hole until it reaches the specified level. Refer to the owner's manual for the correct oil type and quantity.
Check for Leaks
Start the engine and allow it to run for a few minutes. Then, inspect the differential cover and surrounding area for any signs of leaks.
Reattach Wheels and Lower the Jeep
Once the differential cover has been replaced and there are no leaks, reattach the wheels. Lower the Jeep carefully by removing the jack stands and then lowering it onto the ground using the jack.
Q1: What is a differential cover?
A1: The differential cover is a case that surrounds the differential gears to protect them. It acts as a barrier against dirt, debris, water, and other elements that could damage the differential gears.
Q2: What does the differential do on a Jeep?
A2: The differential allows the tires to rotate at different speeds, providing better traction and control on uneven surfaces. It enables drivers to handle obstacles without compromising the vehicle's stability.
Q3: Is a rear differential cover the same as a differential case?
A3: No. The differential case refers to the gears inside the differential that split the power from the driveshaft into two sides for the axles. The rear differential cover is simply a cap that covers the case.
