Dozer Repair Cost

1977-1985 Caterpillar D9G Engine Rebuild / Replacement Cost

A engine rebuild / replacement on a Caterpillar D9G typically runs $25,550-$92,800 all in. Below is the labor and parts breakdown, what drives the cost up or down, and how to get an exact number for your machine.

385 HP92.5k lbs43-108 labor hrs
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Typical Repair Cost

Caterpillar D9G engine rebuild

$25,550-$92,800

estimated total, parts and labor

Labor hours

43-108 hrs

Shop rate

$125-$175/hr

Parts

$20,150-$73,900

* Static estimate from heavy-equipment norms, not a quote. Real cost depends on parts source, access, and collateral damage.Get an exact estimate →

What's involved in a Caterpillar D9G engine rebuild repair

Pulling the engine (or doing an in-frame), inspecting the block, and replacing pistons, rings, bearings, gaskets and seals, or dropping in a reman long block. Tier 4 emissions hardware (DPF, EGR, aftertreatment) adds labor and parts on newer machines.

What affects the cost

The range above moves with these factors. The biggest swing is usually parts source and whether the failure damaged anything downstream.

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Frequently asked questions

How much does a Caterpillar D9G engine rebuild repair cost?
A engine rebuild / replacement on a Caterpillar D9G typically runs $25,550-$92,800. That covers about 43-108 hours of labor at a $125-$175/hr shop rate, plus $20,150-$73,900 in parts. Your exact number depends on parts source (OEM vs. reman) and how much collateral damage there is. Get a free custom estimate at equipbook.ai/service/estimate.
How many labor hours is a Caterpillar D9G engine rebuild job?
Plan on roughly 43 to 108 labor hours for a engine rebuild repair on a Caterpillar D9G. Access and how the machine is configured can push that up or down.
What's involved in a Caterpillar D9G engine rebuild repair?
Pulling the engine (or doing an in-frame), inspecting the block, and replacing pistons, rings, bearings, gaskets and seals, or dropping in a reman long block. Tier 4 emissions hardware (DPF, EGR, aftertreatment) adds labor and parts on newer machines.
Is it worth fixing the engine rebuild on a Caterpillar D9G?
At $25,550-$92,800, weigh the repair against the machine's current value. A Caterpillar D9G in good condition is worth far more than this repair, so it usually pays to fix it. Check what your machine is worth first, then decide. Use the free valuation at equipbook.ai/value/caterpillar-d9g.

Before you fix it, know what it's worth

A engine rebuild repair at $25,550-$92,800 is usually worth it on a Caterpillar D9G, but it pays to know the machine's current value first.

See Caterpillar D9G resale value →