Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Generac equipment · Industrial generator engine work
A generator problem needs a clear diagnosis before an engine is ordered. Big 3 handles industrial engine rebuild inquiries for Generac equipment. Start with both the generator identification and the engine installed inside it, then tell us what the inspection found.
East Texas shop · Nationwide freight by quote · Visits by appointment
Send both identification plates and a clear photo of the assembly. The name on the enclosure identifies the equipment; we also need the actual engine manufacturer and specification. Include replacement or repower records if the original engine is no longer installed.
Tell us the mechanical findings already confirmed by your technician. A no-start or shutdown can involve supporting systems as well as the engine. Include diagnosis of the fuel, cooling and controls so the rebuild request addresses the work actually needed.
Identify the fuel used and the set's normal operating schedule. Photograph the coupling, cooling connections, mounts and accessories. We review which components are supplied with the engine and which remain the responsibility of the generator service team.
Big 3 confirms engine acceptance and the build scope individually. This inquiry does not automatically include alternator repair, transfer switches, site electrical work or commissioning. Agree on the engine assembly, receiving arrangements, freight, schedule and warranty before sending equipment.
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
Generator model, serial number and rating plate, plus the installed engine make, model, serial and specification numbers.
Actual fuel type, operating speed, rated output, run hours and standby or regular-use duty; include any previous engine replacement.
Engine diagnosis, overall and tag photos, parts your installer plans to reuse, 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 →This page is for industrial generator engine inquiries, not a promise of coverage for every portable or residential product. Send the generator and engine identifiers so we can confirm whether the engine build is a fit.
The starting scope is the engine. A written quote identifies the assembly and any accepted supporting work. Big 3 is an independent engine builder, not a claim of Generac dealer or warranty-service authorization.
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
Generac equipment · Industrial generator engine work
A generator problem needs a clear diagnosis before an engine is ordered. Big 3 handles industrial engine rebuild inquiries for Generac equipment. Start with both the generator identification and the engine installed inside it, then tell us what the inspection found.
East Texas shop · Nationwide freight by quote · Visits by appointment
Send both identification plates and a clear photo of the assembly. The name on the enclosure identifies the equipment; we also need the actual engine manufacturer and specification. Include replacement or repower records if the original engine is no longer installed.
Tell us the mechanical findings already confirmed by your technician. A no-start or shutdown can involve supporting systems as well as the engine. Include diagnosis of the fuel, cooling and controls so the rebuild request addresses the work actually needed.
Identify the fuel used and the set's normal operating schedule. Photograph the coupling, cooling connections, mounts and accessories. We review which components are supplied with the engine and which remain the responsibility of the generator service team.
Big 3 confirms engine acceptance and the build scope individually. This inquiry does not automatically include alternator repair, transfer switches, site electrical work or commissioning. Agree on the engine assembly, receiving arrangements, freight, schedule and warranty before sending equipment.
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
Generator model, serial number and rating plate, plus the installed engine make, model, serial and specification numbers.
Actual fuel type, operating speed, rated output, run hours and standby or regular-use duty; include any previous engine replacement.
Engine diagnosis, overall and tag photos, parts your installer plans to reuse, 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 →This page is for industrial generator engine inquiries, not a promise of coverage for every portable or residential product. Send the generator and engine identifiers so we can confirm whether the engine build is a fit.
The starting scope is the engine. A written quote identifies the assembly and any accepted supporting work. Big 3 is an independent engine builder, not a claim of Generac dealer or warranty-service authorization.
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.