Extended Parts Advantage

Take your New or Remanufactured Reliance Cummins® Long Block to the next level!

Custom Builds New or Reman Cummins Long Blocks Available:

Cummins 3.9L

Long Block 4B 4BT 4BTA

For 4 Cylinder Engines



Cummins 5.9L

Long Block 6B 6BT 6BTA

For 6 Cylinder Engines



Cummins 8.3L

Long Block 6C 6CT 6CTA

For 6 Cylinder Engines



Cummins 4.5L

Long Block 4B 12 Valve

For 4 Cylinder Engines



Be sure to include the Extended Parts Advantage on your next Custom Long Block purchase.


Injection Pump


Transfer Pump




Turbo Chargers


Belt Tensioner

Dampener Pulley


Inspection & Replacement of Critical Exterior Engine Components

Critical Parts Inspection Service $750*

Removal, Inspection, and Installation of Components | New Fuel, Oil Filters, and Exhaust Manifold Bolts Replacement Parts as Needed





Free Installation on Replacement Parts Purchased

  • Belt Tensioner
  • Bellhousing
  • Exhaust Manifold
  • Fan & Fan Hub
  • Flywheel
  • Fuel Injectors
  • Fuel LInes & Transfer Pump
  • Injection pump drive gear
  • Starter
  • Aftercooler (where applicable)
  • Block Heater (where applicable)
  • Turbocharger (where applicable)

*Includes freight charges, does not include cost of replacement parts. If any critical component part does not pass inspection, it will not be installed on the engine and we will contact you about replacement cost options.

Replacement parts are an additional cost


We re-install to Cummins® OE specifications and advise on any parts that are not within spec. Also install new fuel, oil filters, exhaust manifold bolts, and replacement parts as needed.

A quote will be provided for parts not meeting minimum specifications. No extra charge for installing components purchased at that time.


Once inspection and assembly has been completed, we test run the engine and provide a video of the unit in action prior to shipping back.


We remove, clean and inspect all critical exterior engine components.

Save Time and Labor

No Extra Freight Charges

We pay the freight, there’s no extra charge for picking up your engine core.

Complete Exterior Inspection

Once your engine arrives all engine systems are thoroughly inspected. All the exterior components are removed, cleaned, and inspected to make sure everything is up to spec before being re-installed to the new/reman unit. We will inform you of any components that are not up to par and offer industry competitive pricing on replacement options. Any replacement components purchased through the Extended Parts Advantage will be installed FREE OF CHARGE. It’s all part of the package. You cover the parts, and we’ll handle the installation.

Free Filters

New oil and fuel filters are included and installed at no additional cost.

Free Exhaust Manifold Bolts

New exhaust manifold bolts are included and installed at no additional cost.

Final Inspection

Once all the components have been checked over and installed on the unit (or replaced), the engine is given a final inspection and cranked for oil pressure to make sure all internal components are fully lubricated.

Test Run & Video

Our final step is to test run the engine. We verify the timing, idle and high-end throttle, oil pressure, and finally, we film the unit in action so you can rest assured that everything is as it should be.

How it Works

  1. You Purchased a New or Reman Cummins Long Block
  2. Add the “Extended Parts Advantage”
  3. Ship Your Core To Us…
    • Please be sure that your engine is shipped on a sturdy engine stand able to withstand the round trip. Simply strapping your core to a pallet will not suffice and we will not be responsible for cores damaged in shipping due to improper palletizing.
    • What To Include…
      • We will remove, clean, and inspect the above-listed components prior to installation on your new or remanufactured long block. Should any of these components not pass inspection, you will be contacted with replacement alternatives. The components you must send back are… Full fuel system, including any/all transfer/lift pump(s) and lines, fuel and oil filter housings, injection pump and drive gear, injectors and return lines, intake manifold cover and bolts, aftercooler, dampener, flywheel, and starter, turbo and exhaust manifold with bolts, turbo oil feed, and return lines, all piping, clamps, preheaters, brackets, and hardware.
      • What Not To Send Back… We only inspect, test, and swap over system-critical parts such as: Injection Pump, Turbo, Injectors, Fan Hub, Flywheel, Starter, and Bellhousing. Accessory components are not inspected and will not be re-installed. DO NOT send back: Alternator, Air Compressor, Power Steering/ Hydraulic Pumps, Front Drive Shaft, Clutches, Torque Converters, PTO Units, etc…

The Right Parts To Transform Your Equipment

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