Get the parts your truck needs—when and where you need them. From OEM to aftermarket, we supply quality diesel truck parts and accessories to keep you running stronger, longer, and better equipped.


Truck Parts and Accessories in Seguin, TX
Need quality parts without the runaround? H&H Diesel Service offers a wide range of truck parts and accessories for heavy-duty, medium-duty, and diesel-powered vehicles. Whether you need a fast replacement or an upgrade, we’ve got the inventory and sourcing power to get you what you need—quickly and reliably.
We provide and install:
- OEM and aftermarket engine parts
- Transmission and driveline components
- Air and hydraulic brake parts
- Fuel and exhaust system components
- Suspension, steering, and axle parts
- Lighting, batteries, and electrical parts
- Mirrors, fenders, and custom accessories
- Filters, fluids, and PM kits
If we don’t have it in stock, we’ll source it fast—because downtime isn’t an option.
Experience the H&H Difference
Trusted Supplier Network: We partner with top brands, manufacturers, and distributors to ensure access to high-quality, warranty-backed truck parts.
Fast Ordering, Faster Install: Our techs can pull and install parts directly from your service bay—no need to wait days or drive across town.
Mobile Repairs: Can’t make it to the shop? We offer dependable roadside assistance and scheduled mobile repairs to a 25-mile radius of Seguin, TX.
Custom Accessory Installation: Want upgraded lights, mirrors, or step kits? We install durable, high-performance truck accessories tailored to your needs.
Warrantied Parts and Labor: All parts come with manufacturer warranties, and we back our installation work with a 30-day workmanship guarantee.
Contact Us About Diesel Truck Parts Now: Call 210-332-5821!
Looking for reliable parts or accessories for your diesel truck? Call 210-332-5821 today and get expert advice, quick delivery, and professional install on every diesel truck part you need.
FAQs
What Areas Do You Serve For Truck Parts and Accessories?
We’re located at 7310 I-H 10 West, Seguin, TX 78155, near the I-10 intersection. We also proudly serve San Antonio, TX; Lockhart, TX; Luling, TX; New Braunfels, TX; San Marcos, TX; Cibolo, TX; Schertz, TX; Marion, TX; McQueeney, TX; Geronimo, TX; New Berlin, TX; Santa Clara, TX; and Lake Dunlap, TX.
Do You Sell Both OEM and Aftermarket Parts?
Yes. We carry and source both OEM and aftermarket parts for diesel trucks. We’ll help you choose the best fit for your needs, budget, and performance goals.
Can You Install Accessories As Well?
Absolutely. We install lighting kits, mud flaps, mirrors, step bars, custom fenders, and more—everything you need to personalize or upgrade your truck.
How Can I Get Truck Parts and Accessories?
Just call 210-332-5821 to check availability or request a special order. We’ll get you what you need—and install it with precision and speed.
Our Services
We handle everything from diagnostics and maintenance to complete rebuilds. Whether you're stopping by the shop or broken down roadside, we’ve got you covered. H&H Diesel Service offers mobile repairs and roadside assistance within a 25-mile radius of Seguin.
Call us when you need help fast—on your schedule, at your location.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner




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