Shop / Transmission & Drivetrain / Differential Cover For 2018-2025 Jeep Wrangler Dana 30（M186）12 Bolts Front Axle | SPELAB
SPELAB
Differential Cover For 2018-2025 Jeep Wrangler Dana 30（M186）12 Bolts Front Axle | SPELAB
MPN: SPOS08811BKS
---tab Fitment--- Fitment: 2018+ Jeep Wrangler JL – Rubicon – w/ Gas Engine 2020+ Jeep Wrangler JL – Sport / Sport S / Sahara – w/Diesel Engine 2020+ Jeep Gladiator JT – All Models 2021+ Ford Bronco – Standard on…
Show TruckTow Pig
$199.98
Unavailable · Ships in 3–10 business days
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Fitment sensitive
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This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
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Warranty
Warranty Information Pending
Warranty information has not yet been provided for this product. Contact FullSpecDiesel for help locating the applicable manufacturer or supplier warranty.
View complete warranty---tab Fitment---
Fitment:
2018+ Jeep Wrangler JL – Rubicon – w/ Gas Engine
2020+ Jeep Wrangler JL – Sport / Sport S / Sahara – w/Diesel Engine
2020+ Jeep Gladiator JT – All Models
2021+ Ford Bronco – Standard on Badlands, Wildtrak, 1st Edition & Squatch Pkg. (Option on other models)
Note: The year and model may not guarantee compatibility. Please confirm whether the axle is Dana 30（M186） 12 Bolts.
---tab Description---
Description
OEM stamped covers are thin and vulnerable to rock strikes, leaks, and warping. The Spelab heavy-duty differential cover is engineered for Jeep owners who push their rigs in off-road, rocky, or muddy conditions. With reinforced strength, easy service ports, and superior sealing, this cover protects your gears and keeps you moving confidently on any trail.
Key Features
Heavy-Duty Nodular Iron Construction – Stronger and more impact-resistant than OEM stamped steel covers.
Reinforced Rib Design – Increases housing rigidity and reduces flex during off-road stress.
High/Low Service Ports + Top Fill Port – Makes fluid checking, venting, and refilling easy even when lifted or angled.
Magnetic Stainless Plugs with High-Temp Seals – Capture metal shavings while ensuring a long-lasting, leak-free seal.
Recessed & Protected Bolts – Reduce the risk of bolt damage from rocks or debris on the trail.
OEM Fluid Capacity & Proper Clearance – Maintains factory fluid volume without reducing ground clearance.
Direct Bolt-On Replacement – Installs easily with no cutting, welding, or modifications required.
Specifications
Item
Spec
Material
Cast steel
Bolt Pattern
12 Bolts
Weight
6.5 kg
Package Includes
1x Differential Cover, Bolts, Seals, Installation Guide
---tab FAQS---
Q1: Which vehicles are compatible with the Dana 30（M186）12 Bolts front differential cover?
A1: This differential cover is compatible with 2018 and newer Jeep Wrangler JL Rubicon (gas engines), 2020 and newer Jeep Wrangler JL Sport/Sport S/Sahara (diesel engines), 2020 and newer Jeep Gladiator JT models, and 2021 and newer Ford Bronco models equipped with Badlands, Wildtrak, 1st Edition, or Sasquatch packages.
Q2: How can I confirm if my vehicle has a Dana 30 （M186） front axle?
A2: Look for the "M186" marking on the front differential housing, typically found on a tag or casting.
Q3: Does installing this differential cover require longer bolts or additional hardware?
A3: Due to the increased thickness of this cover, longer bolts may be required. Ensure the bolt length accommodates the added thickness without compromising fit.
Q4: What are the key benefits of using this front differential cover?
A4: The cover improves structural strength, enhances heat dissipation, and provides additional protection for internal components under high-stress conditions, such as off-roading.
Q5: How does the design accommodate front axle articulation and suspension movement?
A5: The compact, reinforced design ensures compatibility with front axle articulation and steering, maintaining performance even in demanding conditions.
Q6: Does this front differential cover improve oil circulation or cooling?
A6: Yes, the finned design increases heat dissipation, while the added fluid capacity ensures better lubrication and thermal management during extended use.
Q7: What should I pay attention to during installation?
A7: Ensure all contact surfaces are clean, use a high-quality sealant, and tighten bolts gradually to the recommended torque specification to achieve an optimal seal.
---tab Blog & Video---
Video
First Purchase: 6.0L Power Stroke with SPELAB Differential Cover: 800+ HP Performance Upgrade, Full-System Modification Tested!
Performance Upgrade Installation Guide
RAM Series SPELAB Differential Cover Installation Overview｜Installation Process + Real-World Feedback
Failure Prevention Installation Guide
SPELAB Differential Cover 6.0 POWERSTROKE Installation Process + Real-World Feedback
Failure Prevention Installation Guide
SPELAB vs. OEM Differential Cover: Performance Differences at a Glance
Comparison Video Repair Guide
SPELAB Differential Cover User Experience: High Strength + Easy Maintenance
Comparison Video Repair Guide
Dodge / RAM SPELAB Differential Cover—truck build just got a serious boost
Comparison Video Repair Guide
×
---tab Fitment---
Fitment:
2018+ Jeep Wrangler JL – Rubicon – w/ Gas Engine
2020+ Jeep Wrangler JL – Sport / Sport S / Sahara – w/Diesel Engine
2020+ Jeep Gladiator JT – All Models
2021+ Ford Bronco – Standard on Badlands, Wildtrak, 1st Edition & Squatch Pkg. (Option on other models)
Note: The year and model may not guarantee compatibility. Please confirm whether the axle is Dana 30（M186） 12 Bolts.
---tab Description---
Description
OEM stamped covers are thin and vulnerable to rock strikes, leaks, and warping. The Spelab heavy-duty differential cover is engineered for Jeep owners who push their rigs in off-road, rocky, or muddy conditions. With reinforced strength, easy service ports, and superior sealing, this cover protects your gears and keeps you moving confidently on any trail.
Key Features
Heavy-Duty Nodular Iron Construction – Stronger and more impact-resistant than OEM stamped steel covers.
Reinforced Rib Design – Increases housing rigidity and reduces flex during off-road stress.
High/Low Service Ports + Top Fill Port – Makes fluid checking, venting, and refilling easy even when lifted or angled.
Magnetic Stainless Plugs with High-Temp Seals – Capture metal shavings while ensuring a long-lasting, leak-free seal.
Recessed & Protected Bolts – Reduce the risk of bolt damage from rocks or debris on the trail.
OEM Fluid Capacity & Proper Clearance – Maintains factory fluid volume without reducing ground clearance.
Direct Bolt-On Replacement – Installs easily with no cutting, welding, or modifications required.
Specifications
Item
Spec
Material
Cast steel
Bolt Pattern
12 Bolts
Weight
6.5 kg
Package Includes
1x Differential Cover, Bolts, Seals, Installation Guide
---tab FAQS---
Q1: Which vehicles are compatible with the Dana 30（M186）12 Bolts front differential cover?
A1: This differential cover is compatible with 2018 and newer Jeep Wrangler JL Rubicon (gas engines), 2020 and newer Jeep Wrangler JL Sport/Sport S/Sahara (diesel engines), 2020 and newer Jeep Gladiator JT models, and 2021 and newer Ford Bronco models equipped with Badlands, Wildtrak, 1st Edition, or Sasquatch packages.
Q2: How can I confirm if my vehicle has a Dana 30 （M186） front axle?
A2: Look for the "M186" marking on the front differential housing, typically found on a tag or casting.
Q3: Does installing this differential cover require longer bolts or additional hardware?
A3: Due to the increased thickness of this cover, longer bolts may be required. Ensure the bolt length accommodates the added thickness without compromising fit.
Q4: What are the key benefits of using this front differential cover?
A4: The cover improves structural strength, enhances heat dissipation, and provides additional protection for internal components under high-stress conditions, such as off-roading.
Q5: How does the design accommodate front axle articulation and suspension movement?
A5: The compact, reinforced design ensures compatibility with front axle articulation and steering, maintaining performance even in demanding conditions.
Q6: Does this front differential cover improve oil circulation or cooling?
A6: Yes, the finned design increases heat dissipation, while the added fluid capacity ensures better lubrication and thermal management during extended use.
Q7: What should I pay attention to during installation?
A7: Ensure all contact surfaces are clean, use a high-quality sealant, and tighten bolts gradually to the recommended torque specification to achieve an optimal seal.
---tab Blog & Video---
Video
First Purchase: 6.0L Power Stroke with SPELAB Differential Cover: 800+ HP Performance Upgrade, Full-System Modification Tested!
Performance Upgrade Installation Guide
RAM Series SPELAB Differential Cover Installation Overview｜Installation Process + Real-World Feedback
Failure Prevention Installation Guide
SPELAB Differential Cover 6.0 POWERSTROKE Installation Process + Real-World Feedback
Failure Prevention Installation Guide
SPELAB vs. OEM Differential Cover: Performance Differences at a Glance
Comparison Video Repair Guide
SPELAB Differential Cover User Experience: High Strength + Easy Maintenance
Comparison Video Repair Guide
Dodge / RAM SPELAB Differential Cover—truck build just got a serious boost
Comparison Video Repair Guide
×
Product conditions
Professional installation is recommended.
- Return eligibility
- Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
- Return window
- 30 days from confirmed delivery
- Restocking fee
- No restocking fee
- Return shipping
- Customer pays return shipping on voluntary returns
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Cancellation is only possible before the supplier order is submitted
- Warranty provider
- Warranty Information Pending
- Warranty duration
- Pending verification
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- SPELAB
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.