Semi truck mechanic inspecting parts on workbench next to a white truck in a garage.

When Your Truck Stops, We Start.

Since 1978, The Service Company has been the trusted choice for heavy-duty truck repair, maintenance, and parts in Southwest Ohio. With multiple modern service centers and a team of certified diesel mechanics, we combine advanced technology with decades of experience to keep your truck running strong.

Schedule your service
Call the shop

From diagnostics to complete engine repair, we deliver fast, dependable service backed by industry-leading expertise.

Reliable. Experienced. Ready to Serve.

A mechanic working on a truck engine in an auto repair shop.
A technician doing diagnostic work on a heavy-duty truck.
A worker using a grinder on the metal underside of a truck
Two mechanics working on a heavy-duty transmission in a garage.
See all services

Heavy-Duty Truck Service Backed by Technology and Trust

Since 1978, The Service Company has been the trusted name in heavy-duty truck repair, maintenance, and parts across Southwest Ohio. Our certified diesel mechanics work in advanced facilities using the latest technology and ongoing training to deliver reliable, high-performance service. Visit us in Covington, Dayton, Greenville, Springfield, or Columbus to schedule your service and keep your fleet running strong.

Discover our expertise →
A customer talks to a parts counter employee.

The Service Company Parts

We have SW Ohio’s largest selection of truck and trailer parts in stock

Shop Now →

We Are Proud to Work With These Partners

HDA Truck Pride logo with bold black text on a white background.
Black-and-white Pac-Man graphic with the word 'Communist' inside the Pac-Man shape.
A black and white badge with a gear-like border that reads "ASE CERTIFIED" in bold letters.
Partial view of bold, black letters on a white background
Black logo with white text and star symbol, reading 'ATA'
A white RV with blue accents parked outdoors at night under a starry sky, equipped with bright exterior lights and red warning lights.

Mounted generators

Built-In Power.
Professional Installation.
Zero Hassle.

Shop Now →
A man with curly hair working on a vehicle engine outdoors, concentrating on repairs.

Build your career on character.

At The Service Company, we believe a successful technician starts with integrity. We hire for character first—then invest in training to develop the skills. Problem-solving mindset? Willing to learn? You might be the kind of technician we’re looking for.

Explore Careers with Us →
Featured
How Modern Fleets Maximize Fuel Efficiency: Real-World Insights for Today’s Drivers and Managers
How Modern Fleets Maximize Fuel Efficiency: Real-World Insights for Today’s Drivers and Managers

Fuel costs are one of the largest expenses for any fleet. This article breaks down how modern diesel trucks achieve better fuel efficiency through aerodynamics, transmissions, driving habits, and emissions-era engine technology.

Signs You Need Wheel Alignment Now for Heavy-Duty Trucks
Signs You Need Wheel Alignment Now for Heavy-Duty Trucks

Driving a heavy-duty truck with misaligned wheels puts safety, fuel economy, and tires at risk. This short guide breaks down the five telltale signs — uneven tire wear, pulling to one side, steering vibration, an off-center wheel, and squealing tires — so drivers and fleet managers can spot misalignment early and take action to avoid costly downtime and repairs.

Essential Tips for Local Semi Truck Federal DOT Inspect
Essential Tips for Local Semi Truck Federal DOT Inspect

When it comes to semi truck inspections, knowing where and how to get your vehicle inspected is crucial for staying safe and compliant on the road. Semi trucks face unique challenges due to their size, weight, and load demands, making regular DOT inspections essential. This guide covers key tips for local semi truck inspections, federal DOT inspection requirements, common safety checkpoints, and maintenance steps to keep your truck compliant, avoid violations, and ensure reliable performance.

Types of DPF Regneration: A guide for truck drivers and owners
Types of DPF Regneration: A guide for truck drivers and owners

The diesel particulate filter (DPF) plays a critical role in reducing harmful soot emissions from diesel engines — but over time, the filter can become clogged if the trapped soot isn’t removed. That’s where regeneration comes in. There are three common regeneration methods: passive regeneration, which naturally burns off soot during long highway drives when exhaust temperatures are high; active regeneration, where the engine’s control unit injects extra fuel to raise exhaust heat and burn off soot when regular driving isn’t enough; and manual (or forced) regeneration, a technician or driver-initiated cleaning for severely clogged filters. Understanding how each process works can help truck owners and drivers optimize DPF maintenance, prevent costly downtime, and stay compliant with emissions standards.