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🧾 Overview
The TeraFlex Dana 35 AdvanTEK M200 HD Differential Cover Kit is a heavy-duty rear axle protection upgrade designed specifically for JL Wrangler and JT Gladiator models equipped with the AdvanTEK Dana 35 (M200) rear axle.
Constructed from 3/8" thick high-strength ductile iron, this cover is built to handle real-world trail abuse—protecting your differential from rocks, debris, and impacts while reinforcing the axle housing under load.
Designed for modern serviceability, it features a large-diameter fill port and mid-level inspection port, making fluid changes and level checks easier than traditional differential covers.
✔ Heavy-duty protection for Dana 35 AdvanTEK (M200) rear axles
✔ 3/8" thick ductile iron construction for extreme durability
✔ Reinforces axle housing and supports gear alignment
✔ Large fill port and inspection port for easier servicing
✔ Direct bolt-on upgrade for JL/JT platforms
🛠 Installation
- Direct bolt-on replacement for factory differential cover.
- Requires draining and refilling differential fluid.
- Estimated install time: ~1 hour
📌 Specs
📌 Key Features & Benefits
- 3/8" Ductile Iron Construction – Built to withstand impacts from rocks and trail obstacles.
- Axle Housing Reinforcement – Adds rigidity to maintain proper gear alignment under load.
- AdvanTEK-Specific Design – Engineered specifically for JL/JT M200 rear axle housings.
- Large Fill Port – Makes fluid servicing easier with funnels or bottles.
- Inspection Port – Allows quick fluid level checks without full removal.
📘 Specifications
- Brand: TeraFlex
- Product Type: Differential Cover
- Axle Type: Dana 35 AdvanTEK (M200) – Rear
- Material: 3/8" Thick Ductile Iron
- Finish: Black Powder Coat with Red TeraFlex Logo
- Mounting: Bolt-On
- Hardware: Included
- Installation Type: Bolt-On
- Sold As: Kit
📦 What’s Included (What’s in the Box)
- Differential Components
- (1) HD Differential Cover – M200 Rear
- Mounting Hardware
🛡 Warranty
- TeraFlex Limited Lifetime Warranty
⚠️ Fitment Notes
- Jeep Wrangler JL (2018–Present)
- Jeep Wrangler Unlimited JL (2018–Present)
- Jeep Gladiator JT (2020–Present)
⚠️ Fitment Notes
- ❗ Designed for Dana 35 AdvanTEK (M200) REAR axle only
- ❗ Will NOT fit standard Dana 35 (non-AdvanTEK) housings
- ❗ Rear axle application only (M200 specific)
- ❗ Some JL trims (like Rubicon) may have different rear axle (verify before purchase)
- ❗ RTV sealant or gasket required (not always included)