Bolland Machine | Services

Cummins Onan A-Series
We have Cummins Onan 4A2.3, 6A3.4, and 6AT3.4 (L42.3 & L63.4) engines rebuilt and ready for exchange.  We also have any parts you may need to do your own rebuild.
  • Remanufactured engines & parts in stock
  • Remanufactured turbochargers
  • Remanufactured water pumps
  • Remanufactured fuel pumps
  • Remanufactured C0149206500 CO149206500 fuel transfer pumps
  • Remanufactured injectors
  • CO101076200 C0101076200 cam bearings in stock
  • C0104166700 flex plate
  • Head sets/gaskets
  • Camshafts/lifters
Call 724-846-1290 for more details.
Complete Heavy & Light Duty Engine Machine Shop Services
Pick Up & Delivery Service

Cylinder Block Honing & Boring

  • Upper & Lower repair rings, counter-boring, cylinder repair sleeves
Align Boring
  • Main saddles, cam bearing bores, housings
Crankshaft Reconditioning
  • Shaft straightening, grinding, polishing, & metalizing
Shaft Grinding & Polishing

Connecting Rod Reconditioning

Cylinder Head Reconditioning

Casting Repair

  • Blocks, heads, and other castings/holes or cracks
Magnaflux & Zyglo Inspection

Pressure Testing (Hot 185° & Cold)


  • Crankshafts, shafts, rolls, etc.
Machine Shop Road Service
  • Counterbores, repair rings, sleeves, thread repair, etc.
Surface Grinding
  • Heads, blocks, manifolds, flywheels, plates, etc.
General Lathe & Bridgeport Machining & Grinding

Turbo & Blower Rebuilding

  • Custom rebuilding & repairs on all makes, models, & sizes
Performance Machine Work
  • Automotive, tractor pullers, diesel
Prototype Machine Work, Model Making & Fabrication
  • Metal stamping, rolling, shearing, bending, etc.
Complete Sheet Metal Fabrication
  • CNC sheet metal fabrication also available
Custom Manufacturing
  • Custom utility carts, air filter housings, gage panels, turnkey type projects, etc.
  • Cast iron, aluminum, steel, stainless steel, etc.
Electronic Ignition & Magneto Repair
  • Drive unit assemblies, speed increasers
  • Repairs to Bendix/P.E.C.
  • Accufire, D.I.U. Basic, S-1850 magnetos
Consulting, Design, and R&D Services

Fuel Valve Rebuilding

Compressor Valve Grinding & Counter Bore Repair

Custom Engine Rebuild Programs

  • For natural gas, engines/compressor packages, and gas or diesel engines
Pneumatic Conveyor Systems
  • Stationary or mobile
Air Compressor & Water Pump Rebuilding

Engine Run-In Department
Products We Supply
Engine Parts & Components
  • Piston liner kits, bearings, gaskets, valve train components, vibration dampers, oil coolers, fan drives, clutch & pressure plates, water pumps, air compressors, fuel pumps, injectors, nozzles, starters

Component Exchange Programs
  • For Caterpillar, Cummins, Detroit, Mack, Navistar (International)
  • Including reconditioned engines, blocks, cranks, cams, rods, heads, turbos, blowers, and various components

New Crankshafts, Camshafts, and Heads

Engine Protection Systems
Water Treatment Products

Custom Air Filtration Systems
  • Complete upgrade and turnkey systems for reciprocating & gas turbine engines, replacement filter systems

Microprocessor Ignition Systems
  • Holley's IQ series, FM 600, 3000, & 9000 series magnetos, repairs to Bendix/P.E.C. Accufire, D.I.U., BASIC, S-1850 magnetos

Machine Shop & Engine Rebuilding Tools & Supplies

Large Inventory and Sources of Used Engines, Castings, Forgings, & Components
Product Directory
Engine Parts
  • Federal Mogul/F.P. Diesel
  • IPD
  • Fel Pro
  • Perkins
  • McBee
  • Dana/Clevite/Victor
  • Haun
  • Martin Wells
  • Tucker
  • Ohio Piston
  • Manley
  • SBI
John Deere Marine (Authorized Dealer)

Propulsion, Auxiliary, or Generator Set Engines

Power-Tech & Reman-Select Engines

OEM Parts



Engine Protection Systems
  • Kysor
Turbos & Blowers
  • Airesearch/Garrett
  • Warner-Ishi
  • Schwitzer
  • K.K.K.
  • Holset
  • Duroflow
  • Elliott
  • Caterpillar
Engine Brakes
  • Jake Brake
  • Pack Brake
  • Teck Brake
Oil Coolers & Dampers
  • Hayden/Utex
  • Vibratech
Filters & Accessories (Air, Fuel, Water, Oil)
  • Farr
  • Fram
  • Raycor
  • Pery
  • Holley Industrial Products (Fairbanks Morse)
  • Precision Engine Controls (Bendix)
Sealants & Lubricants
  • Twist-A-Gap (spark plug gapping kits)
  • Encoders
  • Stitt
  • B.G.
  • Transducers
  • Dwyer gages
  • Muncie
  • Teflon oil feed lines & lead assemblies
  • Irontite
Large Inventory of...
  • Aluminum
  • Brass
  • Copper
  • Plastics
  • Stainless Steel
  • Steel
  • Teflon