Built for Reliability, Rebuilds, and Long-Haul Performance
A Caterpillar® engine is built to last, but even the best equipment requires proper maintenance. Quality replacement components protect your investment and help avoid unnecessary downtime. We supply quality parts designed for routine service, major repairs, and full engine overhauls.
We stock components commonly used in a rebuild kit, along with individual CAT® rebuild components for targeted repairs. Our inventory also supports full replacements like Caterpillar® reman engines, offering a cost-effective option when a complete engine swap makes more sense than rebuilding.
From daily maintenance to heavy overhauls, the right CAT® engine parts help keep trucks productive and reliable mile after mile.
OEM and Aftermarket Caterpillar® Parts Available
Different jobs call for different solutions. Genuine CAT® parts are built to factory standards for exact fit and original performance. These components are a strong choice when maintaining factory specifications on critical systems.
We also offer high-quality aftermarket options that meet or exceed OE requirements. These alternatives provide dependable performance at a more accessible price point without sacrificing durability. Customers can find Caterpillar® diesel parts and CAT® parts online that match their engine model and application.
Before ordering, it's important to confirm engine model, serial range, and intended use. Our team is available to help verify compatibility so the right parts show up the first time.
Why Buy Caterpillar® Parts from Fitzgerald Truck Parts
Fitzgerald Truck Parts supports owner-operators, fleets, and repair shops with reliable components built for real-world work. We carry parts compatible with Caterpillar® equipment used across transportation and industrial applications, not just light-duty service.
Fast shipping, competitive pricing, and experienced support help reduce downtime and keep repairs moving. From a single gasket to Caterpillar® exhaust manifolds, we supply parts that hold up under pressure and heavy loads.
Shop Caterpillar® engine parts at Fitzgerald Truck Parts and keep your Caterpillar® diesel engine running strong with components built for long-haul performance and reliability.
CAT® Replacement Part FAQs
What Caterpillar® engine models do you support?
We carry parts for popular CAT® engines including the 3406E, C15, C12, C10, and related configurations.
Do you sell OEM and aftermarket Caterpillar® parts?
Yes. We offer both OEM Caterpillar® components and high-quality aftermarket alternatives.
Are these parts suitable for engine rebuilds?
Many of the components we stock are commonly used for repairs and full engine rebuilds.
How do I make sure I'm ordering the correct part?
Use your engine model, serial number, or part number to confirm compatibility. Our team can help verify fitment for your specific equipment.