Decatur, TX · Wise County
Heavy-Duty Truck Parts Near Decatur, TX
Holmes Auto Supply stocks heavy-duty truck parts for semi trucks, Class 6–8 commercial vehicles, and large work trucks in and around Decatur, Texas. Brakes, filters, belts, electrical, drivetrain components, and fluids — for the trucks that do not have the luxury of sitting in a dealership shop for days.
Running a trucking company, managing a fleet out of Wise County, or keeping a single workhorse on the road? Call us with your truck specs and we will pull what you need. Most common heavy-duty parts are in stock; less common items can typically be special-ordered for next-day availability.
- Locally owned since 1985
- Wise County, TX — Decatur store
- 4.9 stars on Google
- Special orders in 1–2 days
Heavy-Duty Parts We Stock
Our heavy-duty inventory focuses on the maintenance and repair items that keep commercial trucks moving. Call ahead to confirm a specific part number is in stock.
Brakes & Wheel End
- Air brake chambers
- Brake shoes and lining
- Rotors and drums (heavy-duty)
- Slack adjusters
- Brake hardware kits
- Hub seals and bearings
- ABS sensors
Engine & Filtration
- Heavy-duty oil filters
- Diesel fuel filters
- Air filters (panel and radial)
- Coolant filters
- Hydraulic filters
- Fuel/water separators
- Crankcase vents
Belts, Hoses & Cooling
- Serpentine and drive belts
- Radiator and heater hoses
- Coolant (HD extended life)
- Thermostats
- Water pumps
- Fan clutches
- Belt tensioners
Electrical & Lighting
- Heavy-duty batteries
- Starters and alternators
- Marker and clearance lights
- Turn signal lamps
- Headlight bulbs (truck spec)
- Wiring harnesses
- Fuses and circuit breakers
Drivetrain & Chassis
- Fifth wheel lube
- Trailer connection hardware
- Air line fittings and hoses
- Gladhand seals
- DOT airline tubing
- Chassis grease
- U-joints and driveline grease
Fluids & Lubricants
- Diesel engine oil (15W-40, 10W-30)
- Transmission fluid (HD)
- Rear axle and differential fluid
- Power steering fluid
- Brake fluid (DOT 3/4)
- DEF (diesel exhaust fluid)
- Coolant premix and concentrate
Heavy-Duty Truck Parts Near Decatur — Without the Dealer Wait
Commercial trucks in Wise County cannot afford extended downtime. Dealership service departments are backed up, and big-box parts stores often do not carry the heavy-duty-specific components a Class 7 or 8 truck actually needs. Holmes Auto Supply bridges that gap — we stock the heavy-duty filtration, brake components, electrical parts, and fluids that your truck maintenance requires, and we can source specialty items fast.
U.S. Highway 380 runs straight through Decatur. If you are running freight through Wise County, broke down near Bridgeport or Alvord, or pulling off I-35 for a quick maintenance run, we are a practical stop at 803 W Main St.
If your truck also needs a custom hydraulic hose built on-site, we do that too — see our custom hydraulic hose fabrication in Decatur, TX.
Fleet Maintenance Parts
If you are managing a fleet of commercial trucks out of Wise County, we can help you stay stocked on filters, fluids, belts, and brake components across multiple units. Call to discuss your needs.
Trucking Company Supply Runs
Drivers and owner-operators making a supply run through Decatur can call ahead to confirm availability. We stock diesel engine oil, DEF, filters, and common consumables in quantity.
Special Orders in 1–2 Business Days
If we do not have your specific part on the shelf, we can order it. Most heavy-duty parts that we can source arrive within one to two business days. Call us with your part number.
Knowledgeable Counter Staff
Not sure of the exact part number? Give us the year, make, model, and engine size and we will cross-reference the right fit. We would rather get it right than have you make a return trip.
Related Services at Holmes Auto Supply
Need Heavy-Duty Truck Parts in Decatur, TX?
Call with your truck year, make, model, and engine spec and we will confirm what we have in stock. Same-day pickup when available. Open Monday–Friday 8am–5:30pm and Saturday 8am–1pm.