Diesel Engine Repair & Services

Diesel Specialists, LTD keeps your industrial engines and generators running strong in Humble & Houston, TX—expert diagnostics, repairs, overhauls, OEM parts, and preventive maintenance to cut downtime and extend service life.

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

We diagnose, repair, and overhaul industrial diesel engines and generators with documented processes that restore power and reliability. From electronic controls to hard parts, our technicians handle quick fixes and full in-frame or complete rebuilds with post-repair validation when appropriate.

What We Do

  • 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 means tighter quality control and faster turnarounds. We inspect to OEM specifications and document every step to ensure dependable results.

Capabilities

  • 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 & Mobile Repair

When equipment can’t come to us, we come to you. Our stocked service trucks dispatch from Humble for diagnostics, minor repairs, and scheduled PM visits that keep stationary units and generators ready.

Field Support

  • 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

Get genuine OEM and quality aftermarket components with experienced counter support. We stock common service parts and can source hard-to-find items fast.

Brands We Support

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

What's In Stock

  • Filters, injectors, pumps, gaskets, sensors

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

  • PM parts and technical ID assistance

Preventive Maintenance (PM)

Planned inspections, fluids/filters, and documented checks keep fleets and facilities on schedule. We tailor PM to your operating hours and compliance requirements to prevent downtime and extend asset life.

Program Highlights

  • Scheduled service programs

  • Load/exercise guidance for standby units

  • Oil/fuel/coolant condition checks

  • Maintenance records for your files

Who We Serve

We support organizations that rely on ready-to-run equipment. Programs are built for uptime, documentation, and safety.

Program Highlights

  • 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 serve Houston and most projects within ~100 miles, including Spring, The Woodlands, Kingwood, Atascocita, Baytown, and surrounding communities across Harris, Montgomery, Fort Bend, Brazoria, Galveston, Liberty, Chambers, and Waller counties.

Need directions or a map? See our Contact page for the map and details.

Why DSL

Since 1983, we’ve combined local stability with certified technicians, in-house machining, OEM parts access, and documented processes—backed by post-repair verification when appropriate.

Program Highlights

  • Serving the Greater Houston area since 1983.

  • Authorized OEM Dealer, factory-trained technicians & factory support.

  • ASE-certified diesel technicians with ongoing factory training.

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

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

  • Modern electronic diagnostic systems and documented procedures.

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

  • Post-repair run-in and optional dyno testing.

  • Safety-first with task-specific PPE, zero-energy LOTO, site-rule compliance.

Ready to Schedule?

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

1215 Carpenter Rd, Humble, TX 77396, USA

Diesel Specialists, LTD
Address: 1215 Carpenter Rd.
Humble, TX 77396
Email: [email protected]
Phone: 281-446-1230
Fax: 281-446-1890

If it's diesel, we do it.

From Parts to Repairs,

We've Got You Covered.
Certified. Reliable, Proven.

Schedule Service or Request a Quote

1215 Carpenter Rd, Humble, TX 77396, USA

Diesel Specialists, LTD
Address: 1215 Carpenter Rd.
Address: Humble, TX 77396
Email: [email protected]
Phone: 281-446-1230
Fax: 281-446-1890

If It's Diesel, We Do It.

From Parts to Repairs, We've Got You Covered.
Certified. Reliable. Proven.
Schedule Service or Request a Quote

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