Services

Diesel Specialists, LTD. keeps your industrial engines and generators running strong—offering diagnostics, repairs, overhauls, parts, and preventive maintenance to minimize downtime.

Verified, Trusted and Certified For Your Success.

Genuine OEM Parts

The Right Part, Right Away.
Need a part for your diesel equipment?

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Engine Repair & Overhaul

Expert diagnostics and repairs, as well as complete overhauls for all types of industrial engines and generators.

  • Electronic diagnostics & testing

  • In-frame and complete rebuilds

  • Fuel system service & calibration

  • ECM programming/updates

  • Post-repair run-in; optional dyno verification

Diesel Machine Shop

Precision machining under one roof for quality control and faster turnarounds.

  • Cylinder head reconditioning & pressure testing

  • Flywheel resurfacing & balancing

  • Block boring & sleeve installation

  • Line boring

  • Crankshaft grinding & polishing

  • Connecting rod reconditioning

  • Measurement to OEM specifications


On-Site Service

On-site diagnostics and repairs when equipment can’t come to us; dispatched from Humble with stocked service trucks.

  • Troubleshooting & minor repairs on location

  • PM visits for stationary units & generators

  • Generator exercising and verification under load

  • Scheduled route service available

For urgent issues during work the day or after hours call: (281) 446-1230.

Parts Sales & Support

Genuine OEM and quality aftermarket parts with experienced counter support.

DEUTZ, Isuzu, John Deere, Kubota, Yanmar, JCB, and FP, Rhelko (Kohler)

  • Filters, injectors, pumps, gaskets, sensors

  • Hard-to-find/obsolete sourcing through our network

  • PM parts and technical ID assistance

Preventive Maintenance (PM)

Planned inspections, fluid/filter service, and documentation that keeps fleets and facilities on schedule.

  • Scheduled service programs

  • Load/exercise guidance for standby units

  • Oil/fuel/coolant condition checks

  • Maintenance records for your files

Who We Serve

Fleets – Specialized diesel equipment that must stay ready; repair and PM plans that reduce surprise downtime.
Facilities & Plant Maintenance – Standby generators and industrial engines for buildings and process sites; clear documentation for your records.
Rental & Service Companies – Reliable turnarounds so your equipment is returned to generating revenue faster.
Construction & Industrial – Engines and components prepped for harsh sites—cooling, fueling, and sealing done right.
Healthcare & Critical Operations – Documented, OEM-compliant service performed under your AHJ/site protocols to keep you inspection-ready.

Coverage Area

Our shop is in Humble, TX (1215 Carpenter Rd., Humble, TX 77396). We provide Diesel Engines,Parts, Dyno testing, waterPump testing & generator service across Houston and on-site support for most projects within ~100 miles of Humble, including Houston, Spring, The Woodlands, Kingwood, Atascocita, Baytown, and surrounding communities. We regularly work across Harris, Montgomery, Fort Bend, Brazoria, Galveston, Liberty, Chambers, and Waller counties.

Need directions or a map? See our location on our Contact page.

Why DSL

  • Serving the Greater Houston area since 1983 — stable, local, and experienced.

  • Authorized OEM Dealer — DEUTZ, Isuzu, John Deere, Kubota, Yanmar, JCB, FPT, Perkins, Rhelko (Kohler): genuine OEM parts, factory-trained technicians, and direct technical support (warranty processing per OEM policies).

  • ASE-certified diesel technicians with ongoing factory training.

  • In-house machine shop — heads, flywheels, and other rotating assemblies precision machined and inspected.

  • Multi-brand expertise — experience across major industrial platforms with expert parts support.

  • Technology investment — modern electronic diagnostic systems and documented procedures.

  • Customer-focused — clear estimates, regular updates, and clean close-out documentation.

  • Post-repair verification — when appropriate, run-in and optional dyno testing.

  • Safety-first —We use task-specific PPE, zero-energy LOTO, site-rule compliance.

Tell us what you’re seeing and where the equipment is located—we’ll follow up during business hours with next steps.

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