TeraFlex Dana 44 AdvanTEK M220 HD Differential Cover Kit – Rear (Wrangler JL / Gladiator JT)

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The TeraFlex Dana 44 AdvanTEK M220 HD Differential Cover Kit is a heavy-duty rear axle protection upgrade designed specifically for JL Wrangler and JT Gladiator models equipped wit h the Dana 44 AdvanTEK (M220) rear axle. Constructed from 3/8" thick high-strength ductile iron, this cover is built to withstand serious off-road abuse—protecting your differential from rocks, debris, and impacts while reinforcing the axle housing under load. Designed with modern serviceability in mind, it features a large-diameter fill port and mid-level inspection port, making fluid changes and checks easier than traditional covers. ✔ Heavy-duty protection for Dana 44 AdvanTEK (M220) 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 Show more