DeWalt Miter Saw Replacement Parts: OEM Diagram & Where to Buy (2026)

A DeWalt miter saw earns its keep for years, but three parts wear out long before the motor ever quits: the blade, the kerf plate, and the carbon brushes. The good news is that DeWalt still stocks OEM parts for almost every model it has ever sold, including saws discontinued a decade ago – you just need the right model and Type number before you order anything.

Below is the full breakdown: which parts actually fail, how to pull up the exact diagram for your saw, where the parts are cheapest, and how long each swap actually takes once the new part is in hand.

Common DeWalt Miter Saw Parts That Wear Out

Sawdust, vibration, and drop damage account for almost every part failure on a DeWalt miter saw. Here’s what fails first, in the order most owners run into it:

Blade

Most 12″ DeWalt miter saws (DWS779, DWS780, DW718) take a 1″ arbor blade; the 10″ models (DW703, DWS713) use a 5/8″ arbor. Mixing those up is the single most common ordering mistake – a 10″ blade will not seat on a 12″ saw’s spindle, and forcing it damages the arbor. A dull carbide-tipped blade tears wood fibers instead of shearing them, which shows up as a fuzzy, splintered edge on the cut.

Kerf Plate

The kerf plate is the plastic zero-clearance insert the blade passes through. Repeated bevel and miter cuts widen the slot over years of use, and once it’s chipped, thin trim pieces can tip into the gap instead of sitting flat. It’s held by two or three Phillips screws and takes under five minutes to swap.

Carbon Brushes

Carbon brushes carry current to the motor’s commutator and wear down with every hour of run time. A saw that bogs down under load, cuts out mid-cut, or throws more sparks than usual at the motor vents is telling you the brushes are near their limit. They run under $20 for a genuine DeWalt pair and take about 15 minutes to replace on most models.

Blade Guard

The spring-loaded guard retracts as the blade lowers and snaps back when you lift the handle. A bent guard from a drop, or a return spring that’s lost tension, means the blade stays partially exposed – that’s a safety issue, not a cosmetic one, and it should be replaced before the next cut.

Fence

A bent or gouged fence throws off every bevel cut you make against it, since the workpiece is no longer sitting square to the blade. Fences take the most abuse on job sites, where a saw gets bumped or dropped while loaded on a truck.

Part	Typical Cost	Swap Time	Sign It’s Worn
Blade (10″ or 12″)	$25–$70	~10 min	Tearing, burning, or missing teeth
Kerf plate	$8–$18	~5 min	Cracked or chipped slot
Carbon brushes (pair)	$10–$20	~15 min	Bogging down, cutting out, excess sparking
Blade guard	$15–$35	~20 min	Won’t retract or snap back fully
Fence	$20–$45	~15 min	Bent, gouged, or no longer square

Finding the Exact Part for Your Model

DeWalt has released several revisions of most miter saws, and the “Type” number matters as much as the model number – a DW704 Type 3 uses different brush caps than a DW704 Type 5. Both numbers are printed on a rating-plate sticker on the saw’s motor housing or base.

Once you have both numbers, DeWalt’s free ServiceNet parts lookup (servicenet.dewalt.com) pulls up an exploded diagram of your exact saw with every part numbered and cross-referenced to a price. This is the fastest way to confirm you’re ordering the right kerf plate or brush set instead of guessing from a generic listing.

If you already know it’s a blade you need, the arbor size is the number that actually matters – not the tooth count. A 1″ arbor blade will not fit a saw drilled for 5/8″, and no adapter DeWalt sells changes that.

Where to Buy DeWalt Miter Saw Parts

DeWalt ServiceNet

ServiceNet is the only source guaranteed to carry genuine OEM parts cross-referenced to your exact model and Type. It’s U.S.-only and typically ships in about a week, which makes it the right call for anything except an urgent job-site repair.

Online Retailers

eReplacementParts and Fix.com both stock common DeWalt wear parts with 2–4 day shipping, often at a lower price than ServiceNet on high-turnover items like brushes and kerf plates.

eBay and Specialty Sellers

For a discontinued saw like a DW705 or DW708, eBay sellers who specialize in obsolete power-tool parts are often the only realistic source once ServiceNet lists a part as unavailable. Check the seller’s return policy before buying, since used electrical parts like brush assemblies can’t always be tested before shipping.

Local DeWalt Service Centers

DeWalt’s site has a service-center locator by zip code. For a fast-wearing item like a kerf plate, a same-day walk-in beats waiting on shipping.

How to Replace the Most Common Parts

Replacing the Blade

Unplug the saw first. Press the spindle lock button near the arbor, then loosen the blade bolt with the included wrench – most DeWalt miter saws reverse-thread this bolt, so it loosens clockwise, not counterclockwise. Swap the blade with the teeth pointing down toward the table at the front of the saw, then re-tighten the bolt while the spindle lock is engaged. Total time: about 10 minutes.

Installing a New Kerf Plate

Remove the two or three screws holding the old plate to the saw’s table, lift it out, and set the new plate in the recess before re-driving the screws. Lower the blade through an uncut plate on the first pass to cut its own zero-clearance slot for the cleanest results.

Replacing Carbon Brushes

Unplug the saw, then find the two brush caps on opposite sides of the motor housing – they’re usually a slotted or Phillips cap, not a screw you’d need a specialty bit for. Unscrew each cap, pull the old brush and spring assembly straight out, and push in the new one until it seats. While the caps are off, look at the commutator (the copper cylinder the brushes ride against) for uneven grooving, which can mean the brushes wore unevenly and the motor may need a closer look.

Preventing the Next Repair

• Blow out dust after every project. Compressed air through the motor vents and around the blade guard keeps sawdust from packing into the brush assembly and guard pivot.
• Check square every few months. A speed square against the fence and blade catches a knock-out-of-alignment fence before it ruins a whole run of cuts.
• Oil the pivot points. A drop of light machine oil on the guard pivot and miter-detent mechanism keeps them moving freely without attracting extra dust.
• Cover the saw between uses. A basic dust cover cuts down on the airborne shop dust that eventually works its way into the motor housing.

Conclusion

A DeWalt miter saw is built to be repaired, not replaced – almost every wear part is available as a genuine OEM piece for as little as $10 and a 10-to-20-minute repair. Look up your model and Type number on ServiceNet first, confirm the part diagram matches what you’re holding, and you’ll avoid the most common ordering mistakes before they cost you a return shipment.

FAQs

How do I know if my DeWalt miter saw needs a new blade?

If your cuts are tearing instead of slicing cleanly, taking more downward force than usual, or leaving burn marks, the blade is dull. Chipped, missing, or bent teeth are an immediate sign to replace it rather than wait.

Can I use aftermarket parts on my DeWalt miter saw?

For a blade or fence, a good aftermarket part usually works fine as long as the dimensions match. For carbon brushes and kerf plates, stick to genuine DeWalt parts from ServiceNet, since off-spec brushes are a common cause of motor damage.

Where can I find parts for a discontinued DeWalt miter saw model?

DeWalt’s ServiceNet still lists parts for most discontinued models by entering the model and Type number. If ServiceNet shows a part as unavailable, eReplacementParts and specialty eBay sellers are the next-best sources for older saws like the DW708 or DW705.

How often should I replace the carbon brushes?

There’s no fixed interval, since it depends on usage hours rather than calendar time. Inspect them if the saw runs sluggishly, cuts out under load, or you notice more sparking than usual at the motor vents; most brushes last several years of weekend use before they need swapping.

Is it hard to replace a DeWalt miter saw blade guard?

No. Most blade guards are held on with two to four screws and a return spring, and DeWalt’s parts diagram for your specific model shows the exact screw locations. Budget about 20 minutes including finding the right screwdriver.