785B Remanufactured for CAT Engine 3512 for Sale

Code: 0R-3982
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The 785B CAT 3512 engine is a crucial part of mining due to its ability to haul large quantities and diverse types of dirt and rock. Also used for work in heavy construction, the 3512 is known for its endurance and long lasting functionality. The 3512 fits the 6HK haul truck and includes arrangement 121-5785.

Available on backorder
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Our 785B CAT 3512 engine is remanufactured to the highest standards. We remanufacture in-house to what is known as Bare Metal Remanufacturing. We fully disassemble every part of the engine down to a bare cylinder block. All paint is removed for inspection purposes. This allows us to find any casting defects or cracks.

Complete Overhaul for the 785B CAT 3512 Engine

All parts are cleaned and inspected. Cylinder blocks are machined. Crankshafts are measured and polished. For every engine rebuild, we replace all:

  • Bearings, cups, and plugs
  • Exhaust hardware
  • Oil and fuel filters
  • Piston and liner kits
  • Belts, hoses, clips, brackets, fittings and clamps
  • Wear parts
  • Sensors, wiring harnesses and computer
  • Cylinder Heads
  • Fuel pump and injectors
  • Turbochargers
  • Water pump and regulators
  • Transmission, brake, hydraulic and coolers
  • Starter and alternator
  • Camshafts
  • Regulating springs and valves
  • Oil pump
  • Gaskets, seals, and o-rings
  • Oil cooler
  • Rocker shafts and rockers

Genuine Caterpillar Parts for Your 785B CAT 3512 Engine Replacement

At Independent Rebuild Specialist, we use genuine Caterpillar parts to achieve premium quality rivaling new 785B CAT 3512 engines for 6HK haul trucks fresh off the factory floor.

Painted, Dyno Tested and Dressed for Shipping

All of our rebuilt CAT engines are painted at our facility and then Dyno tested. Many of our engine Dyno tests can be viewed on our YouTube Channel.

All of our engines are shrink wrapped and secured to a customized steel skid for stability and protection from weather elements during storage and shipping.

Our CAT Engine Rebuilds are Guaranteed…AND Fast!

We are not a middleman and stand by our work with a 100% warranty to assure our 3512 engines can be easily set into position for fast and reliable engine replacement at your location.

Our typical turnaround time for remanufacturing a 785B CAT 3512 engine for arrangement 121-5785 is as little as two to three weeks and we ship to most locations around the world.

Get a No Obligation Quote

We reply to all quote requests usually within the hour, during normal U.S. business hours, but always within 24 hours. Call us at 303-659-4652 with any questions about our 785B CAT 3512 for Arrangement 121-5785 rebuilt engine use our Quote Request form to see if our CAT replacement engines are a possible fit for you.