HEAVY DUTY
DEISEL ENGINE
REBUILDS
Commercial, Construction, and Industrial
About HPP
WHO WE ARE
HPP Engines and Drivetrains (formerly Harbaugh Power Products) has been performing high quality commercial, construction and industrial heavy duty diesel engine rebuilds since 1986. We have experience with virtually every manufacturer, including Caterpillar, Case, Cummins, Detroit Diesel, Deutz, Ford, General Motors, International, John Deere, Komatsu, Liebherr, MTU, Mercedes, Perkins, Volvo and more. HPP is conveniently located in Westmoreland County, Pennsylvania, just east of Pittsburgh, PA with easy access from Interstates 70 and 76.
In addition to engine rebuilds, HPP can supply new, rebuilt and used diesel engine parts
and accessories. For more information, please click on the links above.
40+
Years of Experience
DEISEL ENGINE REBUILDS
All HPP engine rebuilds are performed at our facility near Pittsburgh, PA by our expert
mechanics. We offer very competitive pricing, and will provide a detailed quotation upon
request, so you will know exactly what is included in the rebuild.
Engines and component parts are completely disassembled, thoroughly cleaned and
inspected, and all worn components are replaced or remanufactured. Once completed,
each engine and component is then fully tested to ensure correct operation. Our rebuilds
meet or exceed factory specifications and come with our comprehensive warranty.
MINOR OVERHAUL
Camshaft Bearings (for OHC engines)
Connecting Rod Bushings and Bearings
Main and Rod Bearings
Cylinder Kits
Transfer Tubes
Rebuilt Cylinder Head
Thermostats
Gaskets and Seals
Oil, Filters and Extended Life Coolant
MAJOR OVERHAUL
Minor Overhaul +
Fuel Injectors, Injection Pump and Transfer Pump
Turbocharger
Water Pump and Thermostats
Oil Cooler and Oil Pump
Air Compressor
Clean and Machine Engine Block
Recondition Crankshaft and Camshaft
THE EXTRA STEP
To ensure the success of each rebuild, we will also test and inspect the block, camshaft,
pistons, connecting rods, exhaust manifolds, heads, and intake manifolds. If there is a
problem with one of these components, we will promptly notify the customer and provide
either new or reconditioned replacement parts.
We also rebuild transmissions, pumps, heads and other components with the same
accuracy and reliability of our full engine rebuilds.
HPP Engines offers a full machine shop. All engine block remanufacturing is performed on our Rottler F104 CNC Engine Machining Center. CNC operations include:
Our machine shop can also fully rebuild your cylinder head with new valves, springs, guides, seals, locks and injector sleeves, as required.
For customers performing their own rebuilds, HPP can also come to your site to cut counterbores for repair shims without removing the engine from the vehicle.
MACHINE SHOP SERVICES
• Resurfacing
• Line Boring
• Cylinder Boring and Sleeving
• Water Hole Inserts
• Top Deck Inserts
• Lower Cylinder Sleeving
• Counterbore Cutting and Cleaning
• Thrust Facing and more
Our Process
01
Inspection
We will also test and inspect all housings, manifolds, fittings, hardware and other components that are not part of the rebuild.
02
Guidance
If there is a problem with one of these components, we will promptly notify the customer and provide either new or reconditioned replacement parts.
03
Repair
We also rebuild transmissions, pumps, heads and other components with the same accuracy and reliability of our full engine rebuilds.
04
Final Inspection
Every detail is carefully reviewed to ensure superior quality and complete client satisfaction.
PARTS & ACCESSORIES
HPP offers a full range of new and reconditioned parts and accessories, including cylinder heads,
turbochargers, intake manifolds, overhaul kits, internal engine components, exhaust manifolds and transmissions. If we don’t have your part in stock,
there’s a good chance we can locate it and get it to you quickly.
Contact Us
Serving Pennsylvania, Ohio, West Virgina, Maryland, and New York
Have a project in mind? Contact our team for expert guidance and repair.