First off—this Back Door 8503010P3011 is the complete, ready-to-install tailgate for JAC T8 pickup cargo beds. Not the back door of the cab! Think of it as an all-in-one replacement for your T8’s cargo area tailgate: it’s a full assembly that includes the outer steel panel, inner support pieces, factory-installed lock system, hinges, rubber seals, and even the handle. It’s not some pieced-together part—every bit is built to match the shape of the T8’s original cargo bed, so it fits like it was made just for your truck (exactly how the original tailgate did when it was new).
This back door is made specifically for 2018–current JAC T8 models. It works for every version: 2WD or 4WD, all trims (Comfort, Elite, Luxury), and both engine types (the 2.0T diesel 4DB2-1D1 and 2.0T gasoline 4GA3-3D/4D). It’s designed for the T8’s standard cargo bed size—no need to trim it, drill extra holes, or force it to fit. If you slap on a generic tailgate (like one for a JAC T6 or Great Wall Wingle), you’ll end up with gaps that let rain into the cargo bed, a tailgate that won’t lock, or hinges that fall apart after a couple months of use.
This back door does way more than just seal the cargo bed—it has 4 key jobs that make hauling stuff with your T8 easier and safer:
Keeps your cargo safe & stops theft: It comes with the T8’s original lock system (either manual or one that works with your key fob, depending on your trim). When you lock the truck, the tailgate locks too—no one can pry it open to steal tools, groceries, or other gear in the cargo bed. The lock core is made of brass that’s hard to pick, so thieves will have a tough time messing with it.
Blocks rain, snow, and dust: Around the edge of the tailgate, there’s a thick EPDM rubber gasket (the same material the factory uses) that sits tight against the cargo bed when closed. This keeps rain, snow, and road dust out—your stuff stays dry and clean, even if you drive through a heavy downpour or dusty construction site.
Tough enough to handle light weight: The outer panel is made of 1.5mm thick high-strength steel (thicker than cheap aftermarket tailgates) with inner support ribs. You can even stand on it to load big, awkward stuff into the cab—no bending or cracking. Cheap tailgates? They’d warp or break under the same pressure.
Opens and closes smoothly: The hinges are greased up at the factory and have a slow-close shock design—you don’t have to worry about the tailgate slamming shut hard. The handle is also shaped for easy use, so you can open it with one hand even when you’re carrying a box.
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This back door only works with JAC T8 pickup cargo beds—it won’t fit other trucks, even T8s that’ve been modified. Here’s exactly what it works with (and what it doesn’t):
What it FITS: 2018–current JAC T8s (2WD or 4WD, all trims: Comfort, Elite, Luxury). It works for both the 2.0T diesel (4DB2-1D1) and 2.0T gasoline (4GA3-3D/4D) engines too—all T8s have the same standard cargo bed size, so this tailgate’s a perfect match.
What it WON’T fit:
JAC T6 pickups: Their cargo beds are smaller—this tailgate’ll be too long, leaving gaps all around (and it’ll never close right).
Non-JAC trucks (like the Great Wall Wingle or Maxus T60): Their cargo bed shapes and where the hinges mount are totally different. This tailgate just won’t sit or lock properly.
Modified T8 cargo beds: If you shortened/lengthened the cargo bed or changed where the hinges attach, this tailgate won’t line up at all.
JAC T8 single-cab models with extended cargo beds: Check your cargo bed length first—this one’s only for standard-size beds.
What it needs to work with: To function right, it has to pair with JAC T8’s original tailgate hinges (part no. 8503020P3000) and lock cylinder (if you’re replacing that separately). Aftermarket hinges are too flimsy—they’ll bend under the tailgate’s weight, and then you’ll have to replace them too.
Putting in a tailgate might look easy, but it needs precision—JAC 4S shop techs are the way to go, and here’s why:
Hinges need to line up perfectly: The tailgate’s hinges have to match the cargo bed’s hinge mounts exactly. Even a 1mm off will make the tailgate hard to close, or it’ll sag over time (super annoying). Techs use special alignment tools to get this right—you can’t guess it.
Lock needs to sync with the truck: If your T8 has central locking, the tailgate’s lock has to connect to the truck’s ECU. Techs program this so the lock works with your key fob—DIY jobs usually skip this, so the tailgate stays unlocked even when the rest of the truck is locked (big security risk!).
Seal has to be tight (no leaks!): The rubber seal around the tailgate needs to press evenly against the cargo bed. Techs adjust the tailgate’s position to make sure the seal sits tight—no more coming back to a wet load after rain.
Lubricate hinges every 3 months: Spray a little lithium grease on the hinges—it stops squeaking and keeps rust away.
Clean the lock hole regularly: Wipe dust or dirt out of the lock hole with a dry cloth—gunk in there can make your key get stuck (super frustrating when you’re in a hurry).
Replace cracked seals fast: If the rubber seal cracks (from sitting in the sun or cold winters), swap it out right away—use JAC’s original seal (part no. 8503030P3000). A broken seal lets water and dust into the cargo bed.
Don’t slam the tailgate: Even with the slow-close feature, slamming it hard wears out the hinges and lock. Just close it gently—your tailgate will last way longer.
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Summary
The original 8503010P3011 tailgate meets JAC’s standards—fits like a glove, locks up tight, and seals perfectly. It’s not just some basic tailgate; it’s the peace of mind knowing your cargo stays safe, and your T8 looks and runs just like it did when it was new.
Bottom line, the Back Door 8503010P3011 is the "perfect replacement" for your JAC T8’s cargo bed tailgate. It’s just as good as the factory original, works with all your T8’s features, and holds up for years. Stick with the original part, have pros install it, and your T8’s cargo area will be just as reliable as the day you got the truck.
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