Heavy-Duty Excavator parts list

42121-1 · 569 parts in 12 colours, plus 20 spares

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PartQtyFor sale
Sticker Sheet for Set 42121-172184 · [No Color/Any Color] 1 none
Technic Beam 1 × 5 Thin with Axle Holes on Ends11478 · Black 2 none
Technic Link Tread with Beveled Edge15379 · Black 86 none
Technic Link Tread with Beveled Edge15379 · Black · Spare 4 none
Plate Special 1 × 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)15573 · Black 1 none
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle18651 · Black 12 none
Technic Pin Connector Round 1L [Beam]18654 · Black 5 none
Technic Pin Connector Round 1L [Beam]18654 · Black · Spare 1 none
Plate Special 1 × 2 with Pin Hole Underneath18677 · Black 2 none
Technic Turntable Large Type 3 Top, 60 Tooth18938 · Black 1 none
Tile Special 1 × 2 Grille with Bottom Groove2412b · Black 4 none
Plate 2 × 23022 · Black 1 none
Technic Brick 1 × 2 [2 Pin Holes]32000 · Black 1 none
Technic Axle and Pin Connector Angled #132013 · Black 1 none
Technic Axle and Pin Connector Angled #6 - 90°32014 · Black 3 none
Technic Axle and Pin Connector Angled #2 - 180°32034 · Black 3 none
Technic Axle and Pin Connector Toggle Joint Smooth32126 · Black 2 none
Technic Beam 2 × 4 L-Shape Thick32140 · Black 2 none
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · Black 1 none
Technic Beam 3 × 5 L-Shape with Quarter Ellipse Thin32250 · Black 6 none
Technic Gear 12 Tooth Double Bevel32270 · Black 3 none
Technic Beam 1 × 9 Bent (7 - 3) Thick32271 · Black 4 none
Technic Beam 1 × 5 Thick32316 · Black 5 none
Technic Beam 1 × 3 Thick32523 · Black 2 none
Technic Beam 3 × 5 L-Shape Thick32526 · Black 5 none
Technic Axle 43705 · Black 6 none
Technic Connector Beam 3 × 339793 · Black 3 none
Technic Beam 1 × 9 Thick40490 · Black 4 none
Technic Beam 1 × 2 Thin41677 · Black 10 none
Hinge Plate 1 × 2 Locking with 1 Finger on Side, without Groove44567b · Black 1 none
Brick Sloped 30° 1 × 1 x 2/3 (Cheese Slope)54200 · Black 1 none
Brick Sloped 30° 1 × 1 x 2/3 (Cheese Slope)54200 · Black · Spare 1 none
Hinge Cylinder 1 × 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth57360 · Black 1 none
Technic Pin with Friction Ridges Lengthwise with No Center Slots61332 · Black 38 none
Technic Pin with Friction Ridges Lengthwise with No Center Slots61332 · Black · Spare 2 none
Brick Sloped 18° 2 × 1 x 2/3 with 4 Slots / Grate61409 · Black 4 none
Technic Pin Connector Round [Slotted]62462 · Black 4 none
Technic Axle and Pin Connector Perpendicular Triple63869 · Black 2 none
Technic Axle and Pin Connector Perpendicular6536 · Black 8 none
Technic Beam 2 × 3 L-Shape with Quarter Ellipse Thick71708 · Black 2 none
Technic Beam Triangle Thin [Type II]99773 · Black 4 none
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot42924 · Blue 63 none
Technic Axle Pin with Friction Ridges Lengthwise43093 · Blue 14 none
Technic Gear 8 Tooth [Reinforced]10928 · Dark Bluish Gray 6 none
Technic Pin Connector Hub with 1 Axle22961 · Dark Bluish Gray 7 none
Technic Digger Bucket 4 × 724120 · Dark Bluish Gray 1 none
Technic Pin Connector Hub with 2 Axles27940 · Dark Bluish Gray 1 none
Technic Beam 1 × 15 Thick32278 · Dark Bluish Gray 6 none
Technic Beam 1 × 7 Thick32524 · Dark Bluish Gray 1 none
Technic Beam 1 × 11 Thick32525 · Dark Bluish Gray 5 none
Technic Axle 5.5 with Stop [Rounded Short End]59426 · Dark Bluish Gray 1 none
Technic Beam 1 × 2 Thick with Pin Hole and Axle Hole60483 · Dark Bluish Gray 20 none
Technic Axle and Pin Connector Block 4 × 3 x 2 1/2 [Linear Actuator Holder]61904 · Dark Bluish Gray 1 none
Technic Axle 4 with Stop87083 · Dark Bluish Gray 2 none
Technic Pin Connector Round 1L [Beam]18654 · Light Bluish Gray 1 none
Technic Pin Connector Round 1L [Beam]18654 · Light Bluish Gray · Spare 1 none
Technic Turntable Large Type 3 Base18939 · Light Bluish Gray 1 none
Tile 1 × 2 with Groove3069b · Light Bluish Gray 2 none
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]32054 · Light Bluish Gray 6 none
Technic Axle 532073 · Light Bluish Gray 1 none
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · Light Bluish Gray 5 none
Technic Bush3713 · Light Bluish Gray 1 none
Technic Bush3713 · Light Bluish Gray · Spare 1 none
Technic Axle and Pin Connector Perpendicular Double Split41678 · Light Bluish Gray 4 none
Technic Driving Ring Connector Smooth [2 Rounded and 2 Flat Side Walls]42195 · Light Bluish Gray 3 none
Technic Pin 1/2 without Friction Ridges4274 · Light Bluish Gray 15 none
Technic Pin 1/2 without Friction Ridges4274 · Light Bluish Gray · Spare 2 none
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes]44874 · Light Bluish Gray 5 none
Technic Axle 34519 · Light Bluish Gray 13 none
Technic Axle 960485 · Light Bluish Gray 1 none
Equipment Hose Nozzle / Gun with Side String Hole Simplified60849 · Light Bluish Gray 2 none
Equipment Hose Nozzle / Gun with Side String Hole Simplified60849 · Light Bluish Gray · Spare 1 none
Technic Universal Joint 3L [Complete Assembly]61903 · Light Bluish Gray 4 none
Technic Axle and Pin Connector Perpendicular Triple63869 · Light Bluish Gray 4 none
Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes)65489 · Light Bluish Gray 1 none
Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle92693 · Light Bluish Gray 2 none
Technic Axle and Pin Connector Perpendicular Split92907 · Light Bluish Gray 1 none
Technic Gear 16 Tooth Reinforced [New Style]94925 · Light Bluish Gray 4 none
Tile Round 1 × 198138 · Light Bluish Gray 1 none
Tile Round 1 × 198138 · Light Bluish Gray · Spare 1 none
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle11214 · Red 7 none
Brick Curved 2 × 1 No Studs [1/2 Bow]11477 · Red 1 none
Tile 1 × 1 with Groove3070b · Red 2 none
Tile 1 × 1 with Groove3070b · Red · Spare 1 none
Technic Axle 2 Notched32062 · Red 6 none
Plate 1 × 33623 · Red 1 none
Technic Axle 63706 · Red 1 none
Brick Special 1 × 1 with Studs on 2 Sides47905 · Red 1 none
Cone 1 × 1 [Top Groove]59900 · Red 4 none
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole]65304 · Red 4 none
Plate Special 2 × 2 with Groove and Center Stud (Jumper)87580 · Red 4 none
Technic Axle 3 with Stop24316 · Reddish Brown 10 none
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]18575 · Tan 1 none
Technic Pin 3/432002 · Tan 4 none
Technic Pin 3/432002 · Tan · Spare 1 none
Technic Gear 20 Tooth Bevel32198 · Tan 1 none
Technic Axle Pin without Friction Ridges Lengthwise3749 · Tan 2 none
Technic Pin Long without Friction Ridges, with Anti-Roll Notch39888 · Tan 4 none
Technic Gear 12 Tooth Bevel6589 · Tan 1 none
Technic Panel Curved and Bent 6 × 324116 · Trans-Clear 1 none