Power and Precision!
The Crawler Crane is here!

Experience the ultimate LEGO Technic build with 1400 pieces, Power Functions, and a 2-in-1 design that rebuilds into a Mobile Tower Crane.

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🏛 Technic
Set #42042

Crawler Crane

The Crawler Crane is a Technic powerhouse.

🏆 Best For: Ideal for teens and adults interested in mechanical engineering and functional LEGO models. ⏱ 4.5 hr build 🧩 1,400 pcs
★★★★☆ 4.3 from 7 reviews

The Crawler Crane is praised for its impressive size, realistic functionality, and engaging building experience. Some users note the complexity of the build can be challenging, but ultimately rewarding, while others appreciate the set's display value and play features.

MSRP
$149.99
Best Price
$134.99
You Save
10% OFF
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📝 Our Take

The Crawler Crane is a Technic powerhouse. This set delivers a complex and rewarding building experience, showcasing the intricate mechanisms that make Technic sets so captivating. The functional crane arm and realistic crawler tracks provide hours of engaging play.

This set is perfect for Technic enthusiasts and intermediate builders. The detailed construction and impressive size make it a great display piece, while the working functions offer interactive play. It's a satisfying project that bridges the gap between complexity and accessibility.

Skip this if you prefer minifigure-scale builds or simpler models. If you're looking for a faster build with more immediate gratification, consider a smaller Technic set or a Creator Expert vehicle.

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Try asking:
How does the Crawler Crane compare to other Technic construction vehicles in terms of functionality? What are some advanced building techniques used in this set that I can apply to my own MOCs? Is the increased price of the retired set justified by its rarity and features? What is the best way to display the Crawler Crane to showcase its mechanical functions?

🧱 Building Experience

🧩
1,400
Pieces
4.5h
Build Time
📊
Intermediate
Difficulty
Build Highlights:
  • Complex gear system for crane operation
  • Realistic crawler track assembly
  • Extending and retracting crane arm
  • Detailed cabin and structural design

📈 Investment Analysis

↑ Trending up since release
B+
Investment Grade
⏳ Appreciating
The Crawler Crane presents a solid investment opportunity due to its retired status and the enduring popularity of the Technic theme. Its substantial piece count and functional features contribute to its desirability among collectors. While the price has already seen significant appreciation, the demand for well-maintained, complete sets is likely to continue, making it a worthwhile addition to a LEGO investment portfolio. However, potential investors should be mindful of storage conditions and the completeness of the set, as these factors significantly impact resale value.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Make way for the powerful LEGO® Technic Crawler Crane! This huge, robust 2-in-1 model comes with an array of realistic details and exciting features. Activate the included Power Functions motor and use the joysticks to operate the boom, raise and lower the claw, rotate the superstructure and drive the huge caterpillar tracks that maneuver this mighty machine! Includes an authentic double winch and pulley system with extensive cabling, working claw, detailed cab with tilt function, exhaust pipe and a ventilation grill. You can also extend the boom for even greater height! A cool blue and white color scheme adds the finishing touch to this awesome model. Rebuilds into a huge Mobile Tower Crane!

  • Features Power Functions motorized boom, winch, superstructure and caterpillar tracks
  • Also features an opening claw, tilting cab, extendable boom, extensive cabling and a realistic exhaust pipe and ventilation grid
  • Check out the cool blue and white color scheme
  • Activate the huge crawler tracks!
  • Rotate the massive superstructure!
  • Lift the boom!
  • Lower the claw!
  • 2-in-1 model: rebuilds into a Mobile Tower Crane
  • Crawler Crane measures over 24” (61cm) high, 13” (33cm) long and 7” (20cm) wide
  • Mobile Tow er Crane measures over 25” (64cm) high, 22” (56cm) long and 8” (22cm) wide

 

Compare Similar Sets

The Crawler Crane offers a more intricate and realistic crane experience compared to smaller Technic vehicle sets. While sets like the Mobile Crane MK II (42009-1) offer similar functionality, the Crawler Crane's unique track system and overall design set it apart. Collectors looking for a challenging and rewarding Technic build will find the Crawler Crane a compelling choice.

📦 Full Parts Inventory - 120 unique parts • 1,158 total pieces

Technic Gear 8 Tooth [Reinforced] Technic Gear 8 To...
Part #: 10928 Dark Bluish Gray
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Technic Axle Pin ...
Part #: 11214 18× Dark Bluish Gray
Technic Beam 1 x 5 Thin with Axle Holes on Ends Technic Beam 1 x ...
Part #: 11478 Black
Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface Technic Panel Cur...
Part #: 11954 Blue
Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring Wheel 18 x 8 with...
Part #: 13971 Light Bluish Gray
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Technic Beam 3 x ...
Part #: 14720 Light Bluish Gray
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Technic Pin Conne...
Part #: 15100 Black
Technic Panel 3 x 11 x 1 Technic Panel 3 x...
Part #: 15458 White
Technic Axle 5 with Stop Technic Axle 5 wi...
Part #: 15462 11× Dark Tan
Battery Box, Power Functions 4 x 11 x 7 with Orange Switch and Dark Bluish Gray Covers [Complete Assembly] [New Version] Battery Box, Powe...
Part #: 16511 Light Bluish Gray
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Technic Gear 20 T...
Part #: 18575 Tan
Technic Pin Connector Round 1L [Beam] Technic Pin Conne...
Part #: 18654 Dark Bluish Gray
Technic Turntable Large Type 3 Top, 60 Tooth Technic Turntable...
Part #: 18938 Black
Technic Turntable Large Type 3 Base Technic Turntable...
Part #: 18939 Light Bluish Gray
Technic Gear 16 Tooth with Clutch on Both Sides Technic Gear 16 T...
Part #: 18946 11× Red
Technic Driving Ring 3L Technic Driving R...
Part #: 18947 Dark Bluish Gray
Technic Driving Ring Connector Technic Driving R...
Part #: 18948 White
Technic Pin Double Triangle 1 x 3 with 2 Clips Not Completely Round Pin Holes Technic Pin Doubl...
Part #: 19159 Black
Technic Grabber Arm Claw with 3L Thick Beam [Type 2] Technic Grabber A...
Part #: 19540 Black
Sticker Sheet for Set 42042-1 Sticker Sheet for...
Part #: 20874 [No Color/Any Color]
String Cord Poly, 1.2mm Thickness, 100cm String Cord Poly,...
Part #: 21474 Black
String Cord Poly, 1.2mm Thickness, 180cm String Cord Poly,...
Part #: 21478 Black
Tile 1 x 4 with Groove Tile 1 x 4 with G...
Part #: 2431 Blue
Technic Link 1 x 16 Technic Link 1 x 16
Part #: 2637 Light Bluish Gray
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 Black
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Dark Bluish Gray
Plate 2 x 3 Plate 2 x 3
Part #: 3021 Blue
Flag 7 x 3 with Rod Flag 7 x 3 with Rod
Part #: 30292 Dark Blue
Bar 4L (Lightsaber Blade / Wand) Bar 4L (Lightsabe...
Part #: 30374 Black
Technic Brick 1 x 2 [2 Pin Holes] Technic Brick 1 x...
Part #: 32000 Black
Technic Pin 3/4 Technic Pin 3/4
Part #: 32002 Tan
Technic Beam 1 x 11.5 Double Bent Thick Technic Beam 1 x ...
Part #: 32009 White
Technic Beam 1 x 11.5 Double Bent Thick Technic Beam 1 x ...
Part #: 32009 Blue
Technic Axle and Pin Connector Angled #1 Technic Axle and ...
Part #: 32013 White
Technic Axle and Pin Connector Angled #5 - 112.5° Technic Axle and ...
Part #: 32015 White
Technic Axle and Pin Connector Angled #5 - 112.5° Technic Axle and ...
Part #: 32015 Light Bluish Gray
Technic Axle and Pin Connector Angled #2 - 180° Technic Axle and ...
Part #: 32034 Black
Technic Axle Connector with Axle Hole Technic Axle Conn...
Part #: 32039 Black
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Technic Pin Long ...
Part #: 32054 36× Black
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Technic Pin Long ...
Part #: 32054 50× Light Bluish Gray
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 15× Red
Technic Beam 1 x 6 Thin Technic Beam 1 x ...
Part #: 32063 16× Black
Technic Axle 5 Technic Axle 5
Part #: 32073 14× Light Bluish Gray
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Technic Bush 1/2 ...
Part #: 32123b Light Bluish Gray
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Technic Bush 1/2 ...
Part #: 32123b Yellow
Technic Axle and Pin Connector Toggle Joint Smooth Technic Axle and ...
Part #: 32126 Blue
Technic Pin Double with Axle Hole Technic Pin Doubl...
Part #: 32138 Black
Technic Beam 2 x 4 L-Shape Thick Technic Beam 2 x ...
Part #: 32140 16× Light Bluish Gray
Technic Beam 2 x 4 L-Shape Thick Technic Beam 2 x ...
Part #: 32140 Blue
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Technic Axle and ...
Part #: 32184 Light Bluish Gray
Technic Gear 20 Tooth Bevel Technic Gear 20 T...
Part #: 32198 Tan
Technic Gear 12 Tooth Double Bevel Technic Gear 12 T...
Part #: 32270 Black
Technic Beam 1 x 9 Bent (7 - 3) Thick Technic Beam 1 x ...
Part #: 32271 White
Technic Beam 1 x 15 Thick Technic Beam 1 x ...
Part #: 32278 40× Blue
Technic Beam 1 x 15 Thick Technic Beam 1 x ...
Part #: 32278 Dark Bluish Gray
Technic Beam 1 x 5 Thick Technic Beam 1 x ...
Part #: 32316 Black
Technic Beam 1 x 4 Thin Technic Beam 1 x ...
Part #: 32449 White
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 17× Blue
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 White
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 Black
Technic Beam 1 x 7 Thick Technic Beam 1 x ...
Part #: 32524 White
Technic Beam 1 x 7 Thick Technic Beam 1 x ...
Part #: 32524 27× Blue
Technic Beam 1 x 7 Thick Technic Beam 1 x ...
Part #: 32524 Dark Bluish Gray
Technic Beam 1 x 11 Thick Technic Beam 1 x ...
Part #: 32525 Black
Technic Beam 1 x 11 Thick Technic Beam 1 x ...
Part #: 32525 Blue
Technic Beam 1 x 11 Thick Technic Beam 1 x ...
Part #: 32525 Dark Bluish Gray
Technic Beam 3 x 5 L-Shape Thick Technic Beam 3 x ...
Part #: 32526 White
Technic Beam 3 x 5 L-Shape Thick Technic Beam 3 x ...
Part #: 32526 Blue
Technic Beam 3 x 5 L-Shape Thick Technic Beam 3 x ...
Part #: 32526 18× Dark Bluish Gray
Technic Pin Long without Friction Ridges Technic Pin Long ...
Part #: 32556 15× Tan
Technic Pin Connector Perpendicular Long Technic Pin Conne...
Part #: 32557 Black
Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Technic Beam 3 x ...
Part #: 33299a Light Bluish Gray
Plate 1 x 3 Plate 1 x 3
Part #: 3623 White
Technic Gear 24 Tooth [New Style with Single Axle Hole] Technic Gear 24 T...
Part #: 3648b Dark Bluish Gray
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 16× Light Bluish Gray
Technic Axle 4 Technic Axle 4
Part #: 3705 10× Black
Technic Axle 6 Technic Axle 6
Part #: 3706 11× Black
Technic Axle 8 Technic Axle 8
Part #: 3707 Black
Technic Bush Technic Bush
Part #: 3713 Light Bluish Gray
Technic Axle 10 Technic Axle 10
Part #: 3737 Black
Technic Beam 1 x 9 Thick Technic Beam 1 x ...
Part #: 40490 Light Bluish Gray
Technic Beam 1 x 13 Thick Technic Beam 1 x ...
Part #: 41239 20× Dark Bluish Gray
Technic Beam 1 x 13 Thick Technic Beam 1 x ...
Part #: 41239 White
Technic Beam 1 x 2 Thin Technic Beam 1 x ...
Part #: 41677 White
Technic Axle and Pin Connector Perpendicular Double Split Technic Axle and ...
Part #: 41678 Light Bluish Gray
Technic Wedge Belt Wheel [aka Pulley] Technic Wedge Bel...
Part #: 4185 Light Bluish Gray
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Technic Axle and ...
Part #: 42003 10× Black
Wheel 11 x 8 with Center Groove Wheel 11 x 8 with...
Part #: 42610 28× Light Bluish Gray
Technic Pin 1/2 Technic Pin 1/2
Part #: 4274 Light Bluish Gray
Technic Axle Pin with Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 43093 39× Blue
Technic Axle 7 Technic Axle 7
Part #: 44294 Light Bluish Gray
Technic Pin Connector Perpendicular 2 x 2 Bent Technic Pin Conne...
Part #: 44809 Black
Technic Axle 3 Technic Axle 3
Part #: 4519 40× Light Bluish Gray
Technic Worm Gear Technic Worm Gear
Part #: 4716 Light Bluish Gray
Technic Pin Connector Hub Perpendicular 3L with 4 Pins Technic Pin Conne...
Part #: 48989 11× Light Bluish Gray
Technic Axle and Pin Connector, Perpendicular with Extension Technic Axle and ...
Part #: 53586 Flat Silver
Technic Axle 8 with Stop Technic Axle 8 wi...
Part #: 55013 Dark Bluish Gray
Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part) Technic Pin Conne...
Part #: 55615 Light Bluish Gray
Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Wheel 18mm x 14mm...
Part #: 55982 Light Bluish Gray
Technic Tread Sprocket Wheel Large 10 Tooth Technic Tread Spr...
Part #: 57519 Black
Technic Axle 5.5 with Stop [Rounded Short End] Technic Axle 5.5 ...
Part #: 59426 Dark Bluish Gray
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 12× Red
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 Black
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Technic Beam 1 x ...
Part #: 60483 23× Dark Bluish Gray
Technic Beam 3 x 3 T-Shape Thick Technic Beam 3 x ...
Part #: 60484 Dark Bluish Gray
Technic Beam 3 x 3 T-Shape Thick Technic Beam 3 x ...
Part #: 60484 12× Light Bluish Gray
Technic Axle 9 Technic Axle 9
Part #: 60485 Light Bluish Gray
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate Slope 18° 2 x 1 x...
Part #: 61409 Dark Bluish Gray
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Trans-Orange
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Trans-Clear
String Reel 2 x 1 x 2 Drum with Axle Hole String Reel 2 x 1...
Part #: 61510 Light Bluish Gray
Technic Universal Joint 3L [Complete Assembly] Technic Universal...
Part #: 61903 Light Bluish Gray
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 Light Bluish Gray
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 Yellow
Technic Axle and Pin Connector Perpendicular Triple Technic Axle and ...
Part #: 63869 14× Light Bluish Gray
Technic Beam 5 x 11 with 3 x 5 Opening Frame Thick Technic Beam 5 x ...
Part #: 64178 Light Bluish Gray
Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Technic Beam Fram...
Part #: 64179 Light Bluish Gray
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Light Bluish Gray
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Technic Pin Long ...
Part #: 6558 129× Blue
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 Dark Tan
Technic Gear 12 Tooth Bevel Technic Gear 12 T...
Part #: 6589 Tan
Technic Pin with Friction Ridges Lengthwise and Towball Technic Pin with ...
Part #: 6628 Black
Technic Beam 1 x 9 Bent (6 - 4) Thick Technic Beam 1 x ...
Part #: 6629 Blue
Technic Beam 1 x 3 Thin Technic Beam 1 x ...
Part #: 6632 Blue
Technic Beam 1 x 3 Thin Technic Beam 1 x ...
Part #: 6632 Black
Technic Changeover Catch - + opening Technic Changeove...
Part #: 6641 Red
Technic Gear 24 Tooth Clutch with Dark Bluish Gray Center Technic Gear 24 T...
Part #: 76244 White
Tile 2 x 4 with Groove Tile 2 x 4 with G...
Part #: 87079 White
Technic Panel Fairing #1 Small Smooth Short, Side A Technic Panel Fai...
Part #: 87080 Blue
Technic Axle 4 with Stop Technic Axle 4 wi...
Part #: 87083 14× Dark Bluish Gray
Technic Panel Fairing #2 Small Smooth Short, Side B Technic Panel Fai...
Part #: 87086 Blue
Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Technic Pin Conne...
Part #: 87408 Black
Bar 3L Bar 3L
Part #: 87994 Light Bluish Gray
Technic Link Tread Wide with Two Pin Holes, Reinforced Technic Link Trea...
Part #: 88323 90× Dark Bluish Gray
Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle Technic Linear Ac...
Part #: 92693 Light Bluish Gray
Technic Axle and Pin Connector Perpendicular Split Technic Axle and ...
Part #: 92907 Black
Technic Gear 16 Tooth Reinforced [New Style] Technic Gear 16 T...
Part #: 94925 Light Bluish Gray
Technic Axle 4 with Centre Stop Technic Axle 4 wi...
Part #: 99008 Tan
Motor, Large, Power Functions with Dark Bluish Gray Bottom Motor, Large, Pow...
Part #: 99499 Light Bluish Gray
Technic Beam Triangle Thin [Type II] Technic Beam Tria...
Part #: 99773 Black
Technic Beam Triangle Thin [Type II] Technic Beam Tria...
Part #: 99773 Dark Bluish Gray
This set offers a wide array of Technic pins and beams in useful quantities for MOC builders. The abundance of dark bluish gray treads is particularly valuable for creating custom tracked vehicles.

🛒 Where to Buy

eBay
✓ In Stock
$134.99
Walmart
✓ In Stock
$142.49
Target
✓ In Stock
$149.99
Amazon

💎 Notable Parts

Blue Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots (129x) $6.45
Dark Bluish Gray Technic Link Tread Wide with Two Pin Holes, Reinforced (90x) $13.50
Blue Technic Beam 1 x 15 Thick (40x) $4.00
Light Bluish Gray Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] (50x) $5.00
Black Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] (36x) $3.60
Est. BrickLink Part Value
$32.55

💡 MOC Potential

🚗 Mobile rocket launch platform
🤖 Industrial robot arm
🚗 Heavy-duty recovery vehicle

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Charts Inventory Statistics

120
Unique Parts
1,158
Total Pieces
0
Minifigures
Inventory Version: 1