We're National Gear & Piston - The Diesel People
914-699-5800   |   225 S 4th Ave., Mt Vernon, NY 10550


Your One-Stop Heavy Duty Diesel Shop


national gear and piston main pic

Incorporated in 1997, National Gear & Piston is a full-service, heavy-duty diesel parts and supply warehouse, diesel truck repair and remanufacture center. We are deeply rooted and centered in the Diesel Engine Industry.

Our experienced and factory-trained parts experts, our large inventory and speedy delivery enable us to supply parts to some of the most prestigious fleets in the New York Tri­-State, and Mid-Atlantic Regions. Both our parts department and truck repair shop hold multi-million dollar contracts with major fleets such as New York City Transit Authority, City of White Plains, Tri-Borough Bridge & Tunnel, New York State Southern District, SEPTA, as well as, many private fleets.

Complete engine remanufacturing is our backbone, and we remanufacture all diesel engines. Our specialties include: injection systems, DPF cleaning (diesel engine filter) with our state-of-the-art machinery, component repairs such as transmission and rear differentials, trailers, off-road equipment and general fleet maintenance. We are a licensed New York State safety and emission inspection station and also a licensed New York State truck dealer.

We are “The Diesel People”.

diesel runs through our veins

Diesel Runs Through Our Veins!

At NGP, we are the only experts you can trust as we have over 70 years of experience. However, we have also kept up with the times as these trucks have become less motor and more computer. NGP has all the state-of-the-art computers and software to service all. Our outstanding reputation as an expert diesel engine remanufacturer is well deserved. From small Perkins and Duetz to high horsepower Cummins and Detroits, National Gear & Piston, Inc. more reliably "reman" any motor we offer.

the diesel people have you covered

We Have You Covered!

Servicing your trucks has never been easier, at NGP we have the fastest turn-around time on the East Coast, because we understand our customer's needs to have their trucks back on the road making money. Whether you're hauling heavy weights or making small deliveries with foreign trucks, we can maximize your "up-time" with scheduled preventive maintenance using top quality lubricants and filters. Our machine shop and component remanufacture center offer a wide range of services. We even do restoration, crash repairs, and body work.