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Komatsu GD655-6 vs Cat 16 High Line: Which 1:50 Diecast Grader Is Right for You?

Comparing the Komatsu GD655-6 and Cat 16 High Line diecast motor graders? This head-to-head breaks down the listed prices, standout details, and which model fits different collector needs.

Last updated Aug 17, 2026

The 1:50 Motor Grader Decision

If you're shopping for a 1:50 scale diecast motor grader, two distinct options often land in the same cart: the Komatsu GD655-6 miniature and the Cat 16 High Line from Diecast Masters. They share the same scale and both arrive as new, factory-packed models, but they sit at very different listed price points and emphasize different things in the build. One is a simpler Komatsu replica with a lower price; the other is a more detailed Cat replica with a higher price and limited-edition packaging. Which one should you bring home? This head-to-head compares what each model offers based on the listed details.

Quick Verdict

If you want the lower listed price and a factory-new Komatsu replica with the original box, the Komatsu GD655-6 is the straightforward choice. If you want more interactive details, an operator figure, moving implements, and an articulated frame, and you're willing to pay a higher listed price, the Cat 16 High Line is the more engaging model.

Price and Feature Snapshot

ProductListed PricePrice BarKey Differentiators
Komatsu GD655-6 Diecast Motor GraderUSD 56.39Factory-new condition, original box included, diecast metal construction
Cat 16 High Line Diecast Masters #85507USD 139.99Detailed cab with operator, moveable drawbar/circle/moldboard, steering and articulation, oscillating rear wheels, working ripper, limited edition, metal box

Where Each Model Wins

Komatsu GD655-6 wins on price and simplicity. It carries the lower listed price and provides a straightforward factory-new diecast motor grader. The included original box means it arrives ready for display.

Cat 16 High Line wins on interactive detail. The Diecast Masters model is packed with moving assemblies and a detailed cab, making it feel more like a working machine in miniature. It also comes with limited-edition packaging.

Product Notes

Komatsu GD655-6 Diecast Motor Grader

Komatsu 1:50 Scale Diecast Construction Machinery Miniature GD655-6 Motor Grader

Listed at USD 56.39, this Komatsu miniature is described as factory-new with diecast metal construction. The original box is included, and the item has been graded as C-9 Factory New based on visual appearance. It does not include an instruction manual. If you prefer the lower listed price, this is a direct option. The listing focuses on factory-new condition and diecast metal construction, and it does not mention moveable implements, an operator figure, or articulated-frame action. That means you get a display-style model rather than an interactive one, which may be perfectly fine for a collector who wants a clean Komatsu replica without a large outlay.

Cat 16 High Line Diecast Masters #85507

Cat 16 Motor Grader - High Line - Diecast Masters 1:50 Scale Model #85507 New

Priced at USD 139.99, this Cat 16 High Line arrives brand new in an unopened box. The listing highlights an operator inside the cab, a moveable drawbar/circle/moldboard, front wheel steering, axle articulation, rear frame articulation, oscillating tandem rear wheels, and a rear ripper that raises and lowers. It also features authentic Cat Machine Yellow paint, modern Hex trade dress and safety decals, fire-suppression details, and realistic tire treads. It is marked as Limited Edition and comes in a full-color printed metal box with a die-cut foam insert and an outer cardboard box. The drawback is the higher listed price, as well as the fact that a manual or extra accessories are not mentioned beyond the model and packaging.

Final Choice by Use Case

  • For a lower listed price and a straightforward Komatsu display: Choose the Komatsu GD655-6. You get a factory-new diecast motor grader with the original box and a simpler construction.
  • For maximum collectible detail and articulation: Choose the Cat 16 High Line. The moveable grader assembly, steering, articulation, oscillating wheels, operating ripper, operator figure, and limited-edition packaging make it a standout piece.

Both models are listed as new, so the final decision comes down to how much detail and interactivity you want in relation to the listed price.

Products in this article
Komatsu 1:50 Scale Diecast Construction Machinery Miniature GD655-6 Motor GraderUSD 56.39View on eBayCat 16 Motor GraderUSD 139.99View on eBay
Komatsu 1:50 Scale Diecast Construction Machinery Miniature GD655-6 Motor GraderUSD 56.39View on eBayCat 16 Motor GraderUSD 139.99View on eBay

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