About Products Why Us Reviews Contact 📞 (509) 207-5190
Serving Republic & the Inland Empire since day one

Get back on the road with confidence — not guesswork

Whether it's a routine oil change or a stubborn check engine light, we've got the parts, the expertise, and the no-nonsense advice you need to get it done right the first time.

Call (509) 207-5190 Browse Parts
Local Republic, WA
Expert Staff Knowledge
Honest No Upselling
Auto parts and tools on shelves at Mountain Auto Supply
Interior of Mountain Auto Supply store with shelves of auto parts
About Us

Your neighbors know what your car needs

Mountain Auto Supply isn't a big-box franchise with a revolving door of counter staff. We're a locally owned and operated shop right here in Republic, Washington — the kind of place where you can pull in, talk to someone who actually knows cars, and walk out with the right part the first time.

From domestic sedans to heavy-duty trucks, from routine maintenance to that mysterious rattle you've been ignoring — we stock the parts you need and the expertise to help you choose them.

Quality parts from trusted brands
Fast, same-day service when available
Knowledgeable, friendly staff
Fair, upfront pricing — no surprises
What We Carry

Parts for every mile you drive

From the garage to the trail, we stock the components that keep your vehicle running — and keep you coming back.

Engine parts and components

Engine & Drivetrain

Belts, hoses, filters, spark plugs, brakes, and everything in between — for domestic and import vehicles.

Motor oil and fluid products

Fluids & Maintenance

Motor oil, coolant, transmission fluid, brake fluid, and all the consumables for your next service interval.

Car battery and electrical parts

Batteries & Electrical

Starting batteries, charging components, lighting, wipers, and the electrical parts that keep you moving.

Suspension and steering parts

Suspension & Steering

Shocks, struts, tie rods, ball joints, and control arms — rebuild your ride's handling with confidence.

Automotive tools and shop supplies

Tools & Shop Supplies

Hand tools, shop rags, lubricants, adhesives, and the everyday essentials for the DIY mechanic.

Truck and SUV accessories

Truck & SUV Accessories

Towing gear, bed accessories, roof racks, and the extras that make your truck work harder and look sharper.

Why Mountain Auto Supply

The difference is in the details

We built our reputation on showing up for our customers — every part, every question, every visit.

Right Here in Republic

Located on S Clark Ave, we're your nearest stop for quality auto parts without the drive to Spokane or beyond. Pull in on your way home.

Parts We Stand Behind

We carry established brands and quality aftermarket options — never the cheapest junk that fails in a month. Your satisfaction is our guarantee.

Real People, Real Answers

Don't get passed to a chatbot. Talk to someone who can look at your VIN, understand your problem, and point you to the right part — fast.

Customer Stories

What our neighbors say

We let our customers do the talking — because nothing matters more than the trust you place in us.

"Stopped in with a check engine light and no idea what was wrong. They looked it up, explained the issue in plain English, and had the part on the shelf. Got me back on the road in under an hour. That's the kind of service you can't put a price on."
MR
Marcus R. Republic, WA
"I've been bringing my trucks here for years. They never try to sell me something I don't need, and when they say a part will last, it does. Honest folks running an honest business — hard to find those days."
DL
Dana L. Republic, WA
"As a DIY mechanic, I appreciate when a parts store actually knows their inventory. They helped me track down a hard-to-find sensor for my older truck — something the big chains would've ordered and made me wait a week for."
JT
Jason T. Republic, WA
Ready to Get Started?

Your next part is waiting

Whether you know exactly what you need or you're not sure where to start, give us a call or swing by the shop. We'll get you sorted.

Call (509) 207-5190 Send an Email
Find Us

Visit Mountain Auto Supply

We're easy to find right in the heart of Republic. Pull in and say hello.

Get in Touch

Address

628 S Clark Ave
Republic, WA 99166-5040

Phone (509) 207-5190
Email andywethered@outlook.com
Hours

Mon – Fri: 8:00 AM – 5:00 PM
Saturday: 9:00 AM – 1:00 PM
Sunday: Closed

Is this your business?This is my business