If you've been looking for a dexter ez lube 85 1 cap, you likely noticed yours is missing, or maybe it's just looking a bit too beat up to do its job anymore. It's one of those tiny parts that you don't really think about until you see grease splattered all over your trailer wheel or, worse, you notice your bearings are starting to scream at you on the highway. It's a simple piece of metal, sure, but it's the frontline defense for your trailer's axle system, and getting the right one matters more than most people realize.
What Exactly Is This Cap?
The "85 1" designation usually refers to a specific part number or sizing series within the Dexter ecosystem. When we talk about a dexter ez lube 85 1 cap, we're usually looking at a dust cap designed for a 2,000lb to 3,500lb axle, typically with a 1.98-inch diameter. But more importantly, it's designed for the EZ Lube system.
If you aren't familiar with how that works, it's a total game-changer for anyone who hates taking their hubs apart every season. Instead of a standard solid hub, the EZ Lube spindle has a grease fitting (Zerk) right on the end. You pump grease in, it travels through the spindle to the inner bearing, and then flows back toward you to the outer bearing. It's a great system, but it requires a specific type of cap with a hole in the middle for a rubber plug. Without that plug and the specific clearance of the 85 1 cap, the whole system just doesn't work.
Why You Can't Just Ignore a Missing Cap
I've seen plenty of people try to "make do" with a piece of duct tape or just leave the hub exposed for a "quick trip." Trust me, don't do that. The second that dexter ez lube 85 1 cap falls off, you're inviting every bit of road salt, dust, and rainwater directly into your bearings.
Bearings are tough, but they hate grit. Once a little bit of sand gets into that grease, it acts like sandpaper, grinding down the rollers and the race. Before you know it, you've got a seized bearing, and you're stuck on the shoulder of the road waiting for a tow truck that's going to cost way more than a five-dollar cap. The cap's job is to keep the "good stuff" (grease) in and the "bad stuff" (everything else) out.
Finding the Right Fit
One of the most annoying things about trailer parts is that everything looks almost identical. You might look at a cap and think, "Yeah, that looks like it fits," only to get home and realize it's a fraction of a millimeter too small. The dexter ez lube 85 1 cap is pretty standard, but you always want to double-check your hub's bore size.
Most of the time, if you have a 3,500lb axle, you're looking for that 1.98-inch outer diameter. If you try to force a cap that's too big, you'll just dent it and ruin the seal. If it's too small, it'll vibrate loose and disappear somewhere on the interstate within the first ten miles. If you still have the old cap, look for the "85-1" stamp on it. That's your golden ticket to getting the right replacement without having to play the guessing game at the parts store.
How to Install It Without Ruining It
You'd think putting a metal cap on a hole would be easy, but I've seen plenty of people mangle these things. Because the dexter ez lube 85 1 cap is usually made of relatively thin steel, hitting it directly with a hammer is a recipe for a D-shaped cap that won't seal.
The trick is to use a block of wood or a large socket that matches the outer diameter of the cap's flange. Position the cap over the hub, put the wood over the cap, and tap the wood. This distributes the force evenly and keeps the cap from tilting. You want it to go in straight. If it starts to go in crooked, don't keep hitting it. Pop it back out, realign it, and try again. It should be a snug fit—if it slides in too easily, your hub might be slightly stretched, and you might need a different solution.
Don't Forget the Rubber Plug
The cap itself is only half the battle. The dexter ez lube 85 1 cap has that distinct hole in the center. You absolutely need the rubber plug that goes with it. Some people think the plug is just for show, but it's what allows you to access the Zerk fitting without removing the whole cap. More importantly, it keeps the grease from leaking out the front. If you buy a replacement cap, make sure it comes with the plug, or pick up a few spares. Those little rubber circles have a habit of dry-rotting or getting lost over time.
Maintenance Tips for EZ Lube Systems
Since you're already messing with the cap, it's a good time to check your grease. One mistake people make with the dexter ez lube 85 1 cap system is over-greasing. You don't need to pump the entire hub full until it's bursting.
When you're adding grease, do it slowly while rotating the wheel. This ensures the grease gets distributed around the bearings rather than just building up pressure in one spot. If you see grease starting to ooze out around the rear seal of the hub, stop immediately. That means you've blown the inner seal, and now you've got grease on your brake shoes or magnets. That's a much bigger project than just replacing a dust cap.
Dealing with Rust and Corrosion
If you live near the coast or tow a boat trailer, you know that salt air eats metal for breakfast. Even if your dexter ez lube 85 1 cap is still there, it might be rusted to the point where it's getting thin or porous.
I always suggest putting a very light film of grease on the "shoulder" of the cap before you tap it into the hub. It makes it easier to install, and it provides a tiny bit of a moisture barrier to prevent the cap from rusting itself to the hub. If you ever have to take it off again for a full bearing pack, you'll thank yourself.
Where to Buy and What to Look For
You can find a dexter ez lube 85 1 cap at pretty much any farm supply store, trailer dealership, or online. My advice? Buy a pair. They're cheap, and if you lose one, you'll probably lose the other eventually. Having a spare in your truck's toolbox is one of those "pro-towing" moves that saves you a lot of stress later on.
When you're shopping, look for caps that are galvanized or chrome-plated if you're worried about looks or rust. Some of the cheaper ones are just raw steel with a thin paint job, and they'll look like junk after one rainy season. Dexter-branded parts are usually the safest bet because you know the tolerances will be spot on for their own axles.
A Final Thought on Trailer Safety
It's easy to look at a dexter ez lube 85 1 cap and think it's just a "dust cover." But in the world of towing, there's no such thing as an unimportant part. Every component works together to keep those wheels spinning smoothly at 70 mph.
Keeping those caps in good shape and ensuring they're seated properly is the easiest maintenance task you can do. It takes five minutes, costs less than a burger, and keeps your bearings happy for thousands of miles. So, next time you walk past your trailer, give the caps a quick tap. If they're loose, or if the rubber plug is missing, take care of it now. Your axle—and your wallet—will definitely thank you down the road.