If It's Diesel, We Do It.

DIESEL SPECIALISTS, LTD

Serving the Houston area since 1983.

Contact

(281) 446-1230

If It's Diesel, We Do It.

Call (281)-446-1230

Cummins Engine Repair & Service in Humble, Houston, TX

At DSL Humble, we provide expert Cummins engine repair, Cummins diesel engine repair, maintenance, diagnostics, and overhaul services throughout Houston and surrounding Texas areas. Our skilled technicians restore performance, improve reliability, and minimize downtime for all types of equipment.

Whether you need routine maintenance, emergency repairs, diagnostics, or complete rebuilds, our Cummins engine service solutions support generators, construction equipment, agricultural machinery, fleet vehicles, marine applications, and industrial equipment.

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Parts vs. Service Coverage

Parts: Identification, quotation, sourcing, and shipment available nationwide, and internationally where applicable, subject to availability and freight.

Service & Repair: Harris county, Brozoria county, Pasadena, Channelview, Beaumont, Deer Park, Houston, Pearland, Sugar Land, Richmond, Katy, and surrounding areas.

Where We Provide Cummins Engine Service?

At DSL Humble, we offer professional on-site diesel repair services across the Greater Houston area from our Humble, TX facility. We serve customers throughout Houston, Humble, Kingwood, Pasadena, La Porte, Deer Park, Baytown, Conroe, The Woodlands, Sugar Land, Galveston, Beaumont, and nearby areas.

Designed to meet the needs of industrial, commercial, agricultural, and construction businesses, our mobile repair team brings expert diagnostics and repair services directly to your location. This approach helps reduce transportation costs, shorten service turnaround times, and keep your operations moving.

Our Cummins Engine Repair and Service Capabilities

Our experienced technicians deliver a full range of Cummins engine repair and maintenance services to support optimal equipment performance.

Advanced Cummins Engine Diagnostics & Testing
Fuel System Repairs & Injector Service
Cooling System Service & Repairs
Turbocharger Inspection, Repair & Replacement
Complete Engine Overhauls & Rebuilds
Genuine Cummins Parts Installation & Support

Cummins Equipment & Applications We Service

Our experienced Kohler engine repair specialists service a wide range of Cummins-powered equipment used across various industries and applications, including:

Construction Equipment – Skid steers, mini excavators, wheel loaders, telehandlers
Industrial Equipment – Generators, compressors, pumps and industrial power systems
Agricultural Equipment – Tractors, harvesters and specialized farm machinery
Landscaping Equipment – Compact loaders and utility equipment
Material Handling – Forklifts and lifting equipment

Common Cummins Engine Problems We Diagnose & Repair

Our technicians regularly diagnose and resolve the following issues:

Starting Difficulties in Marine Conditions
Saltwater Cooling System Corrosion
Fuel Contamination Issues
Marine Exhaust System Problems

Speak with our Cummins specialists for fast, accurate diagnostics and professional repair recommendations.

Call (281) 446-1230

Why Choose DSL Humble for Cummins Engine Service

Experienced Cummins Technicians – Our team includes Cummins engine specialists with extensive experience across all Cummins engine families and variants, including technicians with more than 40 years of industry experience.
Fast Scheduling & Responsive Service – Minimize equipment downtime with quick service scheduling from a trusted Cummins service centre.
Genuine Replacement Parts – We source genuine Cummins OEM parts and high-quality components to deliver reliable repair and maintenance solutions.
Complete Support Under One Roof – Diagnostics, maintenance, repairs, overhauls, and parts from a single Cummins service centre Houston customers can rely on.
Field & On-Site Service – Emergency on-site repair capability for applicable situations
Emergency Service Response – Our team is available to assist with urgent repair needs and after-hours service requests to help keep critical equipment running.

Call (281) 446-1230

Why Choose DSL for Your Cummins Diesel Engine Repair and Service

40+

Years in Service

4.3★

100+ Reviews

1983

Founded in Houston

12+

Brands Serviced

Our Clients Speak for Us

Our Case Studies

ISUZU 4LE2 Generator - Start Then Dies (Fix)

Perkins 3-Cyl Turbo - RPM Drop Under Welding Load

DEUTZ TCD 2.9 L4 - ECM Lockout from Regen Bypass

Cummins QSK23 Generator Engine Overhaul, Troubleshooting & Repair

Frequently Asked Questions (FAQs)

Yes. We offer emergency repair services for Cummins-powered equipment. With a fleet of fully equipped service trucks and experienced field technicians, we can provide fast on-site support to help get your equipment back in operation as quickly as possible.

Yes. We provide routine Cummins engine maintenance programs designed to improve reliability, reduce downtime, extend equipment life, and prevent unexpected failures.

Yes. We can source and install genuine Cummins replacement parts and related components as needed during service, with no delays to your repair timeline.

We serve the Greater Houston area from our Humble, TX base, including Houston, Kingwood, Pasadena, La Porte, Deer Park, Baytown, Conroe, The Woodlands, Sugar Land, Galveston, Beaumont, and surrounding communities. If your site isn't listed, give us a call we will cover your area.

We work with a wide range of Cummins engine models, including ISX, ISM, X15, ISB, QSB, QSL, and more.

Frequently Asked Questions (FAQs)

The Cummins engine serial number is stamped on the engine dataplate and also on a machined pad on the right-hand side of the engine block near the front. The CPL (Control Parts List) number appears on the dataplate above the serial number — it is a three or four-digit number that identifies the exact specification build of your engine. For ISX and X15 engines, the CPL is essential for identifying which fuel system, turbocharger, and aftertreatment configuration your engine uses, as these change across CPL revisions. Always provide both the serial number and CPL when ordering parts.

Generally no. While the ISB 5.9 and ISB 6.7 share a common engine family, the 6.7L engine has a longer stroke and uses different pistons, liners, crankshaft, and connecting rods. Many gasket dimensions differ, and the fuel system components — particularly injectors and fuel pumps are not interchangeable between 5.9 and 6.7L applications or between mechanical injection and common rail generations. Always verify by serial number and CPL, not by displacement alone.

Yes. We source Cummins marine engine parts QSB5.9-M, QSB6.7-M, QSC8.3-M, QSL9-M, QSM11-M, and QSX15-M with awareness of marine-specific cooling, corrosion, and sensor configurations. Marine Cummins parts orders require the marine engine serial number, which differs from the base industrial engine serial number. Call (281) 446-1230 with your marine engine serial number for parts availability.

We source EGR valve assemblies and EGR coolers for ISM, ISX, ISL, and ISB EPA07-compliant engines; DPF filter elements and DOC assemblies for CM2150 and CM2250 aftertreatment systems; and SCR catalyst assemblies and DEF dosing system components for CM2250 and CM2350 (X15) applications. Aftertreatment system parts require the engine serial number and CM code to confirm the correct configuration. Call us with this information for immediate availability check.

Yes. Our Humble, TX facility performs Cummins ISX, ISX15, and X15 engine overhauls both in-frame and out-of-frame using our in-house machine shop for boring, honing, crankshaft grinding, and head reconditioning. We perform compression testing, CPL-verified parts specification, and a structured run-in procedure on every rebuilt engine. Call (281) 446-1230 to discuss your ISX rebuild project.

Serving Houston's Cummins engine Operators

Our repair and service facility at 1215 Carpenter Rd., Humble, TX 77396 serves Cummins engine operators across Greater Houston, including Pasadena, Baytown, Conroe, Spring, The Woodlands, Sugar Land, Katy, and throughout Southeast Texas and the Gulf Coast industrial corridor.