Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Caterpillar · Industrial rebuild inquiries
Put the engine specification and repair scope in writing before the machine is down any longer. Big 3 builds Caterpillar industrial engines for equipment and power applications. Start with the engine identifiers, the equipment it powers and the findings from the failure.
East Texas shop · Nationwide freight by quote · Visits by appointment
Send the engine serial number together with the machine or generator identification. Include any available build or arrangement records. We review the installed configuration before offering a rebuild scope or replacement option.
Share the diagnosis, operating history and inspection findings already available. Tell us whether the engine overheated, lost lubrication or suffered another documented failure. The quote should address the engine work and identify supporting systems your repair team must check.
Specify the engine assembly level you need and the components retained by your installer. Confirm the mounting, drive, cooling, fuel and control arrangements from the existing equipment. Removal, machine repairs, field service and commissioning are separate responsibilities unless included in writing.
Your inquiry and quote are handled by Big 3. Caterpillar and Cat names identify the requested application; this is an independent engine-build service. Exact engine acceptance, parts, schedule and warranty are confirmed for the job.
Inside the Big 3 shop
Real shop work, from the machining fixture to the details inside the assembly. These archive photos show representative work; we confirm the machining and build scope for your engine in its quote.
A useful quote starts here
Caterpillar engine model and serial number, readable tags and arrangement or parts references if available.
Machine, generator or skid identification, fuel, operating rating and a description of the work it performs.
Diagnosis, damaged components, items to transfer, your location and required return-to-service date.
Confirm the machining, internal components, external equipment and test or commissioning responsibilities in writing. Engine work and complete-machine repair are different scopes.
Confirm whether exchange is required and whether a deposit is included or separate. A core must match the purchased engine and be rebuildable to receive credit. Freight and unloading arrangements are confirmed for the order.
Read core requirements →Agree on the build or supply schedule and the written coverage for your exact order. Inspection, parts availability and confirmed scope affect timing. Review the oil, maintenance and warranty requirements before use.
Review warranty information →Send the exact engine identification and application for review. This page is not a complete model-coverage list or a claim that every configuration is available.
We can discuss the starting scope from your identification and diagnosis. The quote will distinguish confirmed work from items that depend on inspection, parts availability or the condition of your engine.
No. The engine tag and equipment tag identify different parts of the application. Include both, along with fuel and operating details.
No. A guide describes an inquiry path. Current stock, build acceptance, price and lead time are confirmed for your specific order before payment.
Yes. Big 3 builds natural-gas engines for industrial applications. Send the engine and equipment identification, fuel-system details and operating requirements for a build-specific quote.
The engine build is the starting scope. Removal, installation, generator electrical work, pump work, field service and commissioning are included only if specifically agreed in your quote.
Put the next step in motion
Have your identifiers and diagnosis ready. We’ll work through the assembly, core, freight and the next step with you.
Brand and equipment names identify applications for inquiry. Big 3 is an independent engine builder; this page does not claim manufacturer affiliation or authorization.
Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Caterpillar · Industrial rebuild inquiries
Put the engine specification and repair scope in writing before the machine is down any longer. Big 3 builds Caterpillar industrial engines for equipment and power applications. Start with the engine identifiers, the equipment it powers and the findings from the failure.
East Texas shop · Nationwide freight by quote · Visits by appointment
Send the engine serial number together with the machine or generator identification. Include any available build or arrangement records. We review the installed configuration before offering a rebuild scope or replacement option.
Share the diagnosis, operating history and inspection findings already available. Tell us whether the engine overheated, lost lubrication or suffered another documented failure. The quote should address the engine work and identify supporting systems your repair team must check.
Specify the engine assembly level you need and the components retained by your installer. Confirm the mounting, drive, cooling, fuel and control arrangements from the existing equipment. Removal, machine repairs, field service and commissioning are separate responsibilities unless included in writing.
Your inquiry and quote are handled by Big 3. Caterpillar and Cat names identify the requested application; this is an independent engine-build service. Exact engine acceptance, parts, schedule and warranty are confirmed for the job.
Inside the Big 3 shop
Real shop work, from the machining fixture to the details inside the assembly. These archive photos show representative work; we confirm the machining and build scope for your engine in its quote.
A useful quote starts here
Caterpillar engine model and serial number, readable tags and arrangement or parts references if available.
Machine, generator or skid identification, fuel, operating rating and a description of the work it performs.
Diagnosis, damaged components, items to transfer, your location and required return-to-service date.
Confirm the machining, internal components, external equipment and test or commissioning responsibilities in writing. Engine work and complete-machine repair are different scopes.
Confirm whether exchange is required and whether a deposit is included or separate. A core must match the purchased engine and be rebuildable to receive credit. Freight and unloading arrangements are confirmed for the order.
Read core requirements →Agree on the build or supply schedule and the written coverage for your exact order. Inspection, parts availability and confirmed scope affect timing. Review the oil, maintenance and warranty requirements before use.
Review warranty information →Send the exact engine identification and application for review. This page is not a complete model-coverage list or a claim that every configuration is available.
We can discuss the starting scope from your identification and diagnosis. The quote will distinguish confirmed work from items that depend on inspection, parts availability or the condition of your engine.
No. The engine tag and equipment tag identify different parts of the application. Include both, along with fuel and operating details.
No. A guide describes an inquiry path. Current stock, build acceptance, price and lead time are confirmed for your specific order before payment.
Yes. Big 3 builds natural-gas engines for industrial applications. Send the engine and equipment identification, fuel-system details and operating requirements for a build-specific quote.
The engine build is the starting scope. Removal, installation, generator electrical work, pump work, field service and commissioning are included only if specifically agreed in your quote.
Put the next step in motion
Have your identifiers and diagnosis ready. We’ll work through the assembly, core, freight and the next step with you.
Brand and equipment names identify applications for inquiry. Big 3 is an independent engine builder; this page does not claim manufacturer affiliation or authorization.