Cummins, Perkins and equipment-specific builds
Start with the engine manufacturer and serial number, not only the name on the hood. Include photos and existing parts references so we can review the build and any configuration differences.
Industrial engines · Tractors & equipment
Tractor & Equipment Diesel Engine Builds
Get the engine identified before committing to the repair. Big 3 builds engines for tractors and equipment, with the assembly and transferred components matched to the machine and its intended work.
East Texas shop · Nationwide freight by quote · Visits by appointment
Agree on engine removal and delivery
Tell us whether you have a removed engine or a complete machine. Confirm acceptance, removal and installation responsibilities, loading arrangements and freight before transporting equipment. Machine repairs outside the engine build are quoted separately if accepted.
A useful quote starts here
Send the engine tag and equipment details.
Tractor or equipment make, model and serial number plus the engine tag.
Fuel type, engine hours, diagnosis and any prior replacement or repower history.
Mounting, oil-pan, flywheel, accessory and hydraulic-drive details where applicable.
Compare the whole job.
Assembly & scope
Confirm the machining, internal components, external equipment and test or commissioning responsibilities in writing. Engine work and complete-machine repair are different scopes.
Core & freight
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 →Schedule & warranty
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 →Questions before you commit
Can I order from the model name alone?
No. The engine tag and equipment tag identify different parts of the application. Include both, along with fuel and operating details.
Is every engine shown ready to ship?
No. A guide describes an inquiry path. Current stock, build acceptance, price and lead time are confirmed for your specific order before payment.
Can you handle a natural-gas engine?
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.
Does this include the whole machine or site work?
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
Let’s scope your engine.
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.