NEW! Zinc-Plated Brake Calipers for Diesel Trucks

A reman caliper starts life as a used core. That core has already been through years of heat cycles, road salt, and moisture. Rebuilders clean it up, swap the seals, and send it back out. But the casting underneath is still old metal.

That's where the trouble hides. Moisture seeps under uncoated surfaces and leaves corrosion behind. Seals degrade. Service life gets shorter, and you end up pulling that caliper back off the truck a lot sooner than you planned. And you paid a core charge for the privilege.

Every Doc's caliper is built from all-new components. Nothing is pulled from an old core. Here's what's in the box:

Every caliper is a direct bolt-on. No machining, no adapters, no modifications.

Your brakes live in the roughest spot on the truck. Wheel wells take water, mud, salt brine, and brake heat every single day. A painted caliper looks good new, but paint chips, and moisture works its way underneath.

Zinc works differently. It's a sacrificial coating, meaning the zinc takes the corrosion hit before the steel underneath does. That helps keep slide pins moving freely, which means fewer seized calipers and more even pad wear.

If you drive in the salt belt, tow through winter, or work your truck off the pavement, a full zinc-plated finish on your calipers is cheap insurance.

Bottom line: new parts, full zinc protection, and a below-OEM price, with no core to return.

Sometimes it's just one corner. A single caliper is the right call when:

• You've got one seized or leaking caliper, spotted during a tire rotation or brake inspection.

• You run a work truck or fleet and need one corner fixed fast to keep downtime short.

• You do your own wrenching, you know exactly what failed, and you want a new unit, not a reman.

If your truck has miles on it and the pads and rotors are due too, do the whole axle at once. You'll only have the wheels off once, and every part is designed to work together.

Doc's caliper kits come a few ways:

• Calipers only: a matched left/right pair, or all four corners.

• Calipers + rotors + pads: front, rear, or 4-wheel. Calipers, rotors, pads. One order. Full axle done.

• Calipers + rotors + pads + hub: front kits that add a hub assembly with a limited lifetime warranty on the hub.

Rotor and pad kits come in three setups: High Carbon rotors, Black Coat High Carbon rotors, or Drilled & Slotted rotors paired with ceramic pads. Stick with the pairing that comes in the kit. Severe-duty semi-metallic pads run with high carbon rotors, and ceramic pads run with drilled and slotted rotors. Want the upgrade setup? Check out our performance brake kits.

Calipers don't usually fail all at once. Watch for these:

• The truck pulls to one side when you brake.

• Uneven pad wear, with one pad worn way more than its partner.

• Brake fluid leaking around the caliper or piston boot.

• Dragging, a hot wheel, or a burning smell after a drive.

• Heavy rust on the caliper body or seized slide pins.

Brakes aren't something to put off, especially with a trailer behind you. If you're seeing any of these, get it checked and replaced.

Doc's Zinc-Plated Brake Calipers currently cover these applications:

More applications are on the way. Before you order, confirm your exact year, engine, and SRW/DRW setup with our vehicle selector, or browse all Doc's brake parts.

You can. But a reman caliper is built on an old core. Doc's calipers are 100% new, with new castings, pistons, and seals. One comeback and you've spent more than you saved.

No. No core charge and no core to send back. You buy the caliper, you install it, you're done.

Yes. Brackets, abutment clips, bolts, copper washers, and new bleeder screws are included where required. It's ready to install.

Doc's calipers are engineered to OE specifications for a direct bolt-on fit. No machining, no adapters, no modifications. Check the fitment on each product page to match your exact year and model.

The full zinc-plate finish protects against road salt and corrosion from day one, and it cuts down the odds of doing the job twice. That's better long-term value, whether you drive a daily or run a fleet.

Yes. Full kits include calipers, rotors, and pads in one order, and select front kits add hub assemblies. It's a complete axle brake job with no core charge. More questions? Check out our FAQ page.