Heavy-Duty Excavator

Heavy-Duty Excavator

Set #42121-1 · Technic · 2021 · 589 parts

0% in stock
0 of 589 parts available now

Parts (116 types)

LEGO part Brick Special 1 x 1 with Studs on 2 Sides 47905
#47905
Brick Special 1 x 1 with Studs on 2 Sides
Red
1× needed
Stock unknown View →
LEGO part Cone 1 x 1 [Top Groove] 59900
#59900
Cone 1 x 1 [Top Groove]
Red
4× needed
Stock unknown View →
LEGO part Equipment Hose Nozzle / Gun with Side String Hole Simplified 60849
#60849
Equipment Hose Nozzle / Gun with Side String Hole Simplified
Light Bluish Gray
3× needed
Stock unknown View →
LEGO part Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth 57360
#57360
Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth
Black
1× needed
Stock unknown View →
LEGO part Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove 44567b
#44567b
Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove
Black
1× needed
Stock unknown View →
LEGO part Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye 58176
#58176
Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye
Trans-Orange
2× needed
Stock unknown View →
LEGO part Plate 1 x 2 3023
#3023
Plate 1 x 2
Yellow
1× needed
Stock unknown View →
LEGO part Plate 1 x 3 3623
#3623
Plate 1 x 3
Red
1× needed
Stock unknown View →
LEGO part Plate 1 x 4 3710
#3710
Plate 1 x 4
Yellow
1× needed
Stock unknown View →
LEGO part Plate 2 x 2 3022
#3022
Plate 2 x 2
Black
1× needed
Stock unknown View →
LEGO part Plate 4 x 6 3032
#3032
Plate 4 x 6
Yellow
1× needed
Stock unknown View →
LEGO part Plate Round 1 x 1 with Solid Stud 6141
#6141
Plate Round 1 x 1 with Solid Stud
White
5× needed
Stock unknown View →
LEGO part Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573
#15573
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)
Black
1× needed
Stock unknown View →
LEGO part Plate Special 1 x 2 with Pin Hole Underneath 18677
#18677
Plate Special 1 x 2 with Pin Hole Underneath
Black
2× needed
Stock unknown View →
LEGO part Plate Special 2 x 2 with Groove and Center Stud (Jumper) 87580
#87580
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Red
4× needed
Stock unknown View →
LEGO part Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate 61409
#61409
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate
Black
4× needed
Stock unknown View →
LEGO part Slope 30° 1 x 1 x 2/3 (Cheese Slope) 54200
#54200
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Black
2× needed
Stock unknown View →
LEGO part Slope Curved 2 x 1 No Studs [1/2 Bow] 11477
#11477
Slope Curved 2 x 1 No Studs [1/2 Bow]
Red
1× needed
Stock unknown View →
LEGO part Slope Curved 2 x 2 x 2/3 15068
#15068
Slope Curved 2 x 2 x 2/3
Yellow
4× needed
Stock unknown View →
LEGO part Sticker Sheet for Set 42121-1 72184
#72184
Sticker Sheet for Set 42121-1
[No Color/Any Color]
1× needed
Stock unknown View →
LEGO part Technic Axle 2 Notched 32062
#32062
Technic Axle 2 Notched
Red
6× needed
Stock unknown View →
LEGO part Technic Axle 3 4519
#4519
Technic Axle 3
Light Bluish Gray
13× needed
Stock unknown View →
LEGO part Technic Axle 3 with Stop 24316
#24316
Technic Axle 3 with Stop
Reddish Brown
10× needed
Stock unknown View →
LEGO part Technic Axle 4 3705
#3705
Technic Axle 4
Black
6× needed
Stock unknown View →
LEGO part Technic Axle 4 with Stop 87083
#87083
Technic Axle 4 with Stop
Dark Bluish Gray
2× needed
Stock unknown View →
LEGO part Technic Axle 5 32073
#32073
Technic Axle 5
Light Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Axle 5.5 with Stop [Rounded Short End] 59426
#59426
Technic Axle 5.5 with Stop [Rounded Short End]
Dark Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Axle 6 3706
#3706
Technic Axle 6
Red
1× needed
Stock unknown View →
LEGO part Technic Axle 7 44294
#44294
Technic Axle 7
Yellow
1× needed
Stock unknown View →
LEGO part Technic Axle 9 60485
#60485
Technic Axle 9
Light Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Angled #1 32013
#32013
Technic Axle and Pin Connector Angled #1
Black
1× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Angled #2 - 180° 32034
#32034
Technic Axle and Pin Connector Angled #2 - 180°
Black
3× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Angled #6 - 90° 32014
#32014
Technic Axle and Pin Connector Angled #6 - 90°
Black
3× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Block 4 x 3 x 2 1/2 [Linear Actuator Holder] 61904
#61904
Technic Axle and Pin Connector Block 4 x 3 x 2 1/2 [Linear Actuator Holder]
Dark Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular 6536
#6536
Technic Axle and Pin Connector Perpendicular
Black
8× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole 32184
#32184
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole
Light Bluish Gray
5× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole 32184
#32184
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole
Black
1× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular Double Split 41678
#41678
Technic Axle and Pin Connector Perpendicular Double Split
Light Bluish Gray
4× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular Split 92907
#92907
Technic Axle and Pin Connector Perpendicular Split
Light Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular Triple 63869
#63869
Technic Axle and Pin Connector Perpendicular Triple
Black
2× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Perpendicular Triple 63869
#63869
Technic Axle and Pin Connector Perpendicular Triple
Light Bluish Gray
4× needed
Stock unknown View →
LEGO part Technic Axle and Pin Connector Toggle Joint Smooth 32126
#32126
Technic Axle and Pin Connector Toggle Joint Smooth
Black
2× needed
Stock unknown View →
LEGO part Technic Axle Connector Smooth [with x Hole + Orientation] 59443
#59443
Technic Axle Connector Smooth [with x Hole + Orientation]
Yellow
1× needed
Stock unknown View →
LEGO part Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214
#11214
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle
Red
7× needed
Stock unknown View →
LEGO part Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle 18651
#18651
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle
Black
12× needed
Stock unknown View →
LEGO part Technic Axle Pin with Friction Ridges Lengthwise 43093
#43093
Technic Axle Pin with Friction Ridges Lengthwise
Blue
14× needed
Out of stock View →
LEGO part Technic Axle Pin without Friction Ridges Lengthwise 3749
#3749
Technic Axle Pin without Friction Ridges Lengthwise
Tan
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 11 Thick 32525
#32525
Technic Beam 1 x 11 Thick
Dark Bluish Gray
5× needed
Stock unknown View →
LEGO part Technic Beam 1 x 11 Thick 32525
#32525
Technic Beam 1 x 11 Thick
Yellow
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 11.5 Double Bent Thick 32009
#32009
Technic Beam 1 x 11.5 Double Bent Thick
Yellow
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 15 Thick 32278
#32278
Technic Beam 1 x 15 Thick
Dark Bluish Gray
6× needed
Stock unknown View →
LEGO part Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole 60483
#60483
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole
Dark Bluish Gray
20× needed
Stock unknown View →
LEGO part Technic Beam 1 x 2 Thin 41677
#41677
Technic Beam 1 x 2 Thin
Black
10× needed
Stock unknown View →
LEGO part Technic Beam 1 x 3 Thick 32523
#32523
Technic Beam 1 x 3 Thick
Black
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 3 Thick 32523
#32523
Technic Beam 1 x 3 Thick
Yellow
5× needed
Stock unknown View →
LEGO part Technic Beam 1 x 3 Thin 6632
#6632
Technic Beam 1 x 3 Thin
Yellow
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 5 Thick 32316
#32316
Technic Beam 1 x 5 Thick
Black
5× needed
Stock unknown View →
LEGO part Technic Beam 1 x 5 Thin with Axle Holes on Ends 11478
#11478
Technic Beam 1 x 5 Thin with Axle Holes on Ends
Black
2× needed
Stock unknown View →
LEGO part Technic Beam 1 x 6 Thin 32063
#32063
Technic Beam 1 x 6 Thin
Yellow
4× needed
Stock unknown View →
LEGO part Technic Beam 1 x 7 Thick 32524
#32524
Technic Beam 1 x 7 Thick
Dark Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Beam 1 x 7 Thick 32524
#32524
Technic Beam 1 x 7 Thick
Yellow
4× needed
Stock unknown View →
LEGO part Technic Beam 1 x 9 Bent (7 - 3) Thick 32271
#32271
Technic Beam 1 x 9 Bent (7 - 3) Thick
Black
4× needed
Stock unknown View →
LEGO part Technic Beam 1 x 9 Thick 40490
#40490
Technic Beam 1 x 9 Thick
Black
4× needed
Stock unknown View →
LEGO part Technic Beam 1 x 9 Thick 40490
#40490
Technic Beam 1 x 9 Thick
White
1× needed
Stock unknown View →
LEGO part Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick 71708
#71708
Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick
Black
2× needed
Stock unknown View →
LEGO part Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick 71708
#71708
Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick
Yellow
4× needed
Stock unknown View →
LEGO part Technic Beam 2 x 4 L-Shape Thick 32140
#32140
Technic Beam 2 x 4 L-Shape Thick
Yellow
6× needed
Stock unknown View →
LEGO part Technic Beam 2 x 4 L-Shape Thick 32140
#32140
Technic Beam 2 x 4 L-Shape Thick
Black
2× needed
Stock unknown View →
LEGO part Technic Beam 3 x 5 L-Shape Thick 32526
#32526
Technic Beam 3 x 5 L-Shape Thick
Black
5× needed
Stock unknown View →
LEGO part Technic Beam 3 x 5 L-Shape Thick 32526
#32526
Technic Beam 3 x 5 L-Shape Thick
Yellow
3× needed
Stock unknown View →
LEGO part Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin 32250
#32250
Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin
Black
6× needed
Stock unknown View →
LEGO part Technic Beam Triangle Thin [Type II] 99773
#99773
Technic Beam Triangle Thin [Type II]
Black
4× needed
Stock unknown View →
LEGO part Technic Brick 1 x 2 [2 Pin Holes] 32000
#32000
Technic Brick 1 x 2 [2 Pin Holes]
Black
1× needed
Stock unknown View →
LEGO part Technic Bush 3713
#3713
Technic Bush
Light Bluish Gray
2× needed
Stock unknown View →
LEGO part Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced 32123b
#32123b
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced
Yellow
6× needed
Stock unknown View →
LEGO part Technic Connector Beam 3 x 3 39793
#39793
Technic Connector Beam 3 x 3
Black
3× needed
Stock unknown View →
LEGO part Technic Digger Bucket 4 x 7 24120
#24120
Technic Digger Bucket 4 x 7
Dark Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] 42195
#42195
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls]
Light Bluish Gray
3× needed
Stock unknown View →
LEGO part Technic Gear 12 Tooth Bevel 6589
#6589
Technic Gear 12 Tooth Bevel
Tan
1× needed
Stock unknown View →
LEGO part Technic Gear 12 Tooth Double Bevel 32270
#32270
Technic Gear 12 Tooth Double Bevel
Black
3× needed
Stock unknown View →
LEGO part Technic Gear 16 Tooth Reinforced [New Style] 94925
#94925
Technic Gear 16 Tooth Reinforced [New Style]
Light Bluish Gray
4× needed
Stock unknown View →
LEGO part Technic Gear 20 Tooth Bevel 32198
#32198
Technic Gear 20 Tooth Bevel
Tan
1× needed
Stock unknown View →
LEGO part Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] 18575
#18575
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]
Tan
1× needed
Stock unknown View →
LEGO part Technic Gear 8 Tooth [Reinforced] 10928
#10928
Technic Gear 8 Tooth [Reinforced]
Dark Bluish Gray
6× needed
Stock unknown View →
LEGO part Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle 92693
#92693
Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle
Light Bluish Gray
2× needed
Stock unknown View →
LEGO part Technic Link Tread with Beveled Edge 15379
#15379
Technic Link Tread with Beveled Edge
Black
90× needed
Stock unknown View →
LEGO part Technic Panel Curved and Bent 6 x 3 24116
#24116
Technic Panel Curved and Bent 6 x 3
Yellow
3× needed
Stock unknown View →
LEGO part Technic Panel Curved and Bent 6 x 3 24116
#24116
Technic Panel Curved and Bent 6 x 3
Trans-Clear
1× needed
Stock unknown View →
LEGO part Technic Panel Fairing # 3 Small Smooth Long, Side A 64683
#64683
Technic Panel Fairing # 3 Small Smooth Long, Side A
Yellow
1× needed
Stock unknown View →
LEGO part Technic Panel Fairing # 4 Small Smooth Long, Side B 64391
#64391
Technic Panel Fairing # 4 Small Smooth Long, Side B
Yellow
1× needed
Stock unknown View →
LEGO part Technic Panel Fairing #22 5L Small Smooth, Side A 11947
#11947
Technic Panel Fairing #22 5L Small Smooth, Side A
Yellow
1× needed
Stock unknown View →
LEGO part Technic Pin 1/2 4274
#4274
Technic Pin 1/2
Light Bluish Gray
17× needed
Stock unknown View →
LEGO part Technic Pin 3/4 32002
#32002
Technic Pin 3/4
Tan
5× needed
Stock unknown View →
LEGO part Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) 65489
#65489
Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes)
Light Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Pin Connector Hub with 1 Axle 22961
#22961
Technic Pin Connector Hub with 1 Axle
Dark Bluish Gray
7× needed
Stock unknown View →
LEGO part Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] 65487
#65487
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered F
Yellow
5× needed
Stock unknown View →
LEGO part Technic Pin Connector Hub with 2 Axles 27940
#27940
Technic Pin Connector Hub with 2 Axles
Dark Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] 44874
#44874
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squ
Light Bluish Gray
5× needed
Stock unknown View →
LEGO part Technic Pin Connector Perpendicular 2 x 2 Bent 44809
#44809
Technic Pin Connector Perpendicular 2 x 2 Bent
Yellow
2× needed
Stock unknown View →
LEGO part Technic Pin Connector Round [Slotted] 62462
#62462
Technic Pin Connector Round [Slotted]
Black
4× needed
Stock unknown View →
LEGO part Technic Pin Connector Round 1L [Beam] 18654
#18654
Technic Pin Connector Round 1L [Beam]
Black
6× needed
Stock unknown View →
LEGO part Technic Pin Connector Round 1L [Beam] 18654
#18654
Technic Pin Connector Round 1L [Beam]
Light Bluish Gray
2× needed
Stock unknown View →
LEGO part Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] 65304
#65304
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes,
Red
4× needed
Stock unknown View →
LEGO part Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] 32054
#32054
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes,
Light Bluish Gray
6× needed
Stock unknown View →
LEGO part Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot 42924
#42924
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot
Blue
63× needed
Stock unknown View →
LEGO part Technic Pin Long without Friction Ridges, with Anti-Roll Notch 39888
#39888
Technic Pin Long without Friction Ridges, with Anti-Roll Notch
Tan
4× needed
Stock unknown View →
LEGO part Technic Pin with Friction Ridges Lengthwise with No Center Slots 61332
#61332
Technic Pin with Friction Ridges Lengthwise with No Center Slots
Black
40× needed
Stock unknown View →
LEGO part Technic Turntable Large Type 3 Base 18939
#18939
Technic Turntable Large Type 3 Base
Light Bluish Gray
1× needed
Stock unknown View →
LEGO part Technic Turntable Large Type 3 Top, 60 Tooth 18938
#18938
Technic Turntable Large Type 3 Top, 60 Tooth
Black
1× needed
Stock unknown View →
LEGO part Technic Universal Joint 3L [Complete Assembly] 61903
#61903
Technic Universal Joint 3L [Complete Assembly]
Light Bluish Gray
4× needed
Stock unknown View →
LEGO part Tile 1 x 1 with Groove 3070b
#3070b
Tile 1 x 1 with Groove
Red
3× needed
Stock unknown View →
LEGO part Tile 1 x 2 with Groove 3069b
#3069b
Tile 1 x 2 with Groove
Light Bluish Gray
2× needed
Stock unknown View →
LEGO part Tile 2 x 4 with Groove 87079
#87079
Tile 2 x 4 with Groove
Yellow
1× needed
Stock unknown View →
LEGO part Tile Round 1 x 1 98138
#98138
Tile Round 1 x 1
Light Bluish Gray
2× needed
Stock unknown View →
LEGO part Tile Round 1 x 1 98138
#98138
Tile Round 1 x 1
Trans-Clear
3× needed
Stock unknown View →
LEGO part Tile Special 1 x 2 Grille with Bottom Groove 2412b
#2412b
Tile Special 1 x 2 Grille with Bottom Groove
Black
4× needed
Stock unknown View →

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