More Than a Standard "Rebuild"

Built for the high-load demands of XCMG heavy machinery, our remanufactured Cummins QSB6.7 addresses the common failure points like thermal fatigue and dropped valve seats to keep your machines on the job.

CNC Blueprint Machining

Factory machining flaws that lead to compression loss and coolant leaks are eliminated by CNC blueprinting the block and cylinder head, creating perfect tolerances and surface finishes for superior MLS (multi-layer steel) head gasket sealing.

Vibration-Reducing Balancing

Hours of idling vibration take a toll. We dynamically balance the crankshaft, rods, and weight-matched pistons to eliminate drivetrain vibrations and protect your transmission and hydraulic pumps.

Precision Diamond Honing

Cylinders are diamond-honed to a tight 0.0001-inch tolerance for perfect piston ring seating and reduced friction, eliminating piston scoring and blow-by.

Upgraded Industrial Internals

The QSB6.7 frequently suffers from dropped valve seats due to high cylinder pressures. Our upgraded cylinder heads are machined in-house, Magnafluxed and pressure-tested to handle rapid thermal loading year after year.

WHAT'S INCLUDED?

  • Fully Machined Block and Crankshaft - Ground and polished to 0.0005" or less.

  • New Upgraded Pistons and Rings - Optimized for Tier 4 Final thermal cycles.

  • New Main, Rod, and Cam Bearings - All secured with premium main bolts and head studs.

  • Remanufactured Cylinder Head - New oversized seats and MLS head gasket.
Full Description

Is your legacy XCMG losing breakout force or blowing smoke? Don't replace your machine, upgrade the heart of it. Choate Performance offers a fully remanufactured Cummins QSB6.7 Long Block for the XCMG XE215D. We’ve taken the legendary Tier 3 Cummins platform and applied modern precision machining to solve factory oiling and thermal flaws, giving your "C" or "D" series excavator a second life.

 

The Choate Remanufacturing Process At Choate, we believe an industrial engine should be built to the same tolerances as a race engine. Our "Stock is Not an Option" process includes:

  • CNC Blueprint Boring: We rectify the block geometry using precision CNC equipment, ensuring the crankshaft and cylinders are perfectly phased for maximum torque.

  • Precision Balancing: We weight-match the rotating assembly to within 2 grams. For an excavator, this means less stress on the hydraulic pump drive and a smoother operator experience.

  • Torque Plate Honing: By honing the block under the simulated stress of a torqued head, we achieve a superior ring-to-wall seal, maximizing compression and fuel efficiency.

  • Upgraded Valve Materials: We use upgraded valve seats and guides to withstand the constant high-load cycles of aggregate and earthmoving work, preventing valve recession.

 

What’s Included:

  • Fully Machined Block & Crankshaft (Ground and verified for 0.0005" tolerance)

  • New Upgraded Pistons & Rings (Heavy-duty industrial grade)

  • New Main, Rod, and Cam Bearings

  • Remanufactured Cylinder Head (Pressure tested and resurfaced)

 

The Choate Peace-of-Mind Warranty

We don’t just build engines; we stand behind them. Every remanufactured XCMG engine is backed by our industry-leading 2-Year / 2,000-Hour Warranty. This coverage protects your investment against defects in materials and workmanship, ensuring that your machine stays in the dirt and out of the shop. We believe in the quality of our CNC blueprinting and precision assembly—this warranty is our promise of reliability to you and your crew.

 

Ordering Instructions This engine is configured for Tier 3/Legacy XCMG models that do not require Diesel Exhaust Fluid (DEF). To ensure a perfect "drop-in" fit, we will verify your Machine Serial Number and Engine ESN prior to shipping. Need help identifying your engine? Call our experts at 901-553-9847.

Choate Engineering Industrial engines are covered up 1 year / 2,000 hours, with some limitations.

We also require our customers to follow proper maintenance procedures, replace critical components during installation, and more.

As consideration for the above warranties, the buyer agrees they will take no action, statement, characterization, or implication regarding Choate Engineering Performance that may in any manner be interpreted as disparaging to Choate Engineering Performance or the reputation of Choate Engineering Performance. Any violation of this is a material breach, entitling Choate Engineering Performance to void any warranty.

CHOATE ENGINEERING PERFORMANCE SHALL NOT BE RESPONSIBLE, NOR SHALL IT PAY ANY FREIGHT/SHIPPING CHARGES.

  • All freight and shipping charges are the sole responsibility of the customer, including any customs fees or brokerage fees.
  • Any shipments Choate Engineering Performance arranges for the customer include insurance.
  • In the event the purchased unit is damaged during transportation to or from Choate Engineering Performance, Choate Engineering Performance shall not be responsible for any costs associated with such damage.
  • The repair of such damage is not included under the Limited Warranty; should transportation damage skew the results of the diagnosis such that the findings are that the defect is not covered under the Limited Warranty, Choate Engineering Performance shall incur no liability or responsibility whatsoever.

NOTE:

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov