First Responder (42075): parts list and STL files

Set 42075, First Responder, from 2018, has 513 pieces in 119 kinds of part and colour. Here is every part, with the ones you can 3D print at home and the ones to buy.

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Free: an STL file for every part you can print, the parts list and a BrickLink shopping list for the rest. Pro adds print-ready plates for a 256 mm bed and our printing guide. About ProYour Pro includes the print-ready plates.

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First Responder, built (3D picture) — What it looks like built. A 3D picture, not a photo, made from the LDraw model by Philippe Hurbain (CC BY 2.0).

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473to print

40to buy

13spares

119kinds

473 to print, 40 to buy, 13 spares. Print: plain bricks, plates and beams you can make on a home 3D printer. Buy: clear, printed, rubber, electric and very thin parts, which are better ordered. Spares are the extras in the box.

Every part in set 42075

Parts in set 42075, First Responder
Colour	Part	Qty	Print or buy
Black	2780 Pin with Friction Ridges Lengthwise and Center Slots	77	Print
Blue	6558 Pin Long with Friction Ridges Lengthwise, 2 Center Slots	40	Print
Red	6536 Axle and Pin Connector Perpendicular	22	Print
Red	3713 Bush	17	Print
Red	11214 Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle	15	Print
Blue	4274 Pin 1/2 without Friction Ridges	15	Print
Light Bluish Gray	4519 Axle 3	15	Print
Red	32062 Axle 2 Notched	14	Print
Dark Bluish Gray	18654 Pin Connector Round 1L [Beam]	12	Print
Light Bluish Gray	4274 Pin 1/2 without Friction Ridges	10	Print
Blue	43093 Axle Pin with Friction Ridges Lengthwise	9	Print
Red	32034 Axle and Pin Connector Angled #2 - 180°	8	Print
Light Bluish Gray	42003 Axle and Pin Connector Perpendicular 3L with 2 Pin Holes	8	Print
Light Bluish Gray	32054 Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	7	Print
Red	32523 Beam 1 x 3 Thick	7	Print
Light Bluish Gray	32140 Beam 2 x 4 L-Shape Thick	6	Print
Black	32270 Gear 12 Tooth Double Bevel	6	Print
Light Bluish Gray	32525 Beam 1 x 11 Thick	6	Print
Dark Bluish Gray	32526 Beam 3 x 5 L-Shape Thick	6	Print
Black	3705 Axle 4	6	Print
Light Bluish Gray	48989 Pin Connector Hub Perpendicular 3L with 4 Pins	6	Print
Red	60484 Beam 3 x 3 T-Shape Thick	6	Print
Red	26287 Driving Ring Connector Smooth [4 rounded side walls]	5	Print
Red	32524 Beam 1 x 7 Thick	5	Print
Red	32526 Beam 3 x 5 L-Shape Thick	5	Print
Yellow	32073 Axle 5	4	Print
Yellow	32184 Axle and Pin Connector Perpendicular 3L with Centre Pin Hole	4	Print
Red	40490 Beam 1 x 9 Thick	4	Print
Light Bluish Gray	55615 Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part)	4	Print
Reddish Brown	59443 Axle Connector Smooth [with x Hole + Orientation]	4	Print
White	6141 Plate Round 1 x 1 with Solid Stud	4	Print
Red	62462 Pin Connector Round [Slotted]	4	Print
Tan	6589 Gear 12 Tooth Bevel	4	Print
Red	6629 Beam 1 x 9 Bent (6 - 4) Thick	4	Print
Light Bluish Gray	92907 Axle and Pin Connector Perpendicular Split	4	Print
Black	10197 Pin Connector Hub with 2 Perpendicular Axles	3	Print
Tan	18575 Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]	3	Print
Dark Bluish Gray	27940 Pin Connector Hub with 2 Axles	3	Print
Red	32013 Axle and Pin Connector Angled #1	3	Print
Black	63869 Axle and Pin Connector Perpendicular Triple	3	Print
Light Bluish Gray	87082 Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]	3	Print
Red	11954 Panel Curved 11 x 3 with 10 Pin Holes Through Panel Surface	2	Print
Light Bluish Gray	14720 Beam 3 x 5 Thick [90° Offset Centre Beam Holes]	2	Print
Dark Bluish Gray	15458 Panel 3 x 11 x 1	2	Print
Black	18651 Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle	2	Print
Red	22961 Pin Connector Hub with 1 Axle	2	Print
Blue	24116 Panel Curved and Bent 6 x 3	2	Print
Red	25214 Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end	2	Print
Light Bluish Gray	2850b Engine Cylinder without Side Slots, with Bottom Slots	2	Print
Yellow	2851 Engine Piston Round	2	Print
Light Bluish Gray	2852 Engine Connecting Rod	2	Print
Yellow	2853 Engine Crankshaft	2	Print
Light Bluish Gray	32013 Axle and Pin Connector Angled #1	2	Print
Red	32015 Axle and Pin Connector Angled #5 - 112.5°	2	Print
Light Bluish Gray	32016 Axle and Pin Connector Angled #3 - 157.5°	2	Print
Black	32039 Axle Connector with Axle Hole	2	Print
Light Bluish Gray	32278 Beam 1 x 15 Thick	2	Print
Red	32316 Beam 1 x 5 Thick	2	Print
Light Bluish Gray	32524 Beam 1 x 7 Thick	2	Print
White	32524 Beam 1 x 7 Thick	2	Print
Tan	32556 Pin Long without Friction Ridges	2	Print
White	3710 Plate 1 x 4	2	Print
Orange	3942c Cone 2 x 2 x 2, Open Stud	2	Print
Red	41239 Beam 1 x 13 Thick	2	Print
Light Bluish Gray	41678 Axle and Pin Connector Perpendicular Double Split	2	Print
Blue	43857 Beam 1 x 2 Thick	2	Print
Light Bluish Gray	44294 Axle 7	2	Print
Dark Bluish Gray	55013 Axle 8 with Stop	2	Print
Light Bluish Gray	64178 Beam 5 x 11 with 3 x 5 Opening Frame Thick	2	Print
Red	64391 Panel Fairing # 4 Small Smooth Long, Side B	2	Print
Red	64683 Panel Fairing # 3 Small Smooth Long, Side A	2	Print
Dark Tan	6587 Axle 3 with Stud	2	Print
Dark Bluish Gray	87083 Axle 4 with Stop	2	Print
Light Bluish Gray	94925 Gear 16 Tooth Reinforced [New Style]	2	Print
Red	11946 Panel Fairing #21 5L Small Smooth, Side B	1	Print
Red	11947 Panel Fairing #22 5L Small Smooth, Side A	1	Print
Blue	15100 Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise	1	Print
Black	15461 Pin Connector 3L with 2 Pins and Center Hole	1	Print
Red	18946 Gear 16 Tooth with Clutch on Both Sides	1	Print
Light Bluish Gray	2819 Steering Wheel Small (3 Studs Diameter)	1	Print
Dark Bluish Gray	30395 Hook with Towball	1	Print
Red	3706 Axle 6	1	Print
Black	3737 Axle 10	1	Print
Black	4032a Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	1	Print
Dark Bluish Gray	59426 Axle 5.5 with Stop [Rounded Short End]	1	Print
Orange	60483 Beam 1 x 2 Thick with Pin Hole and Axle Hole	1	Print
Light Bluish Gray	61903 Universal Joint 3L [Complete Assembly]	1	Print
Black	64179 Beam Frame 5 x 7 with 3 x 5 Opening Thick	1	Print
Black	87408 Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes	1	Print
Black	87761 Gear Rack 1 x 7 with Axle and Pin Holes	1	Print
Black	2780 Pin with Friction Ridges Lengthwise and Center Slots	2 spare	Print
Dark Bluish Gray	18654 Pin Connector Round 1L [Beam]	1 spare	Print
Red	3713 Bush	1 spare	Print
Light Bluish Gray	4274 Pin 1/2 without Friction Ridges	1 spare	Print
Blue	4274 Pin 1/2 without Friction Ridges	1 spare	Print
White	6141 Plate Round 1 x 1 with Solid Stud	1 spare	Print
Trans-Orange	98138 Tile Round 1 x 1	6	Buy
Black	15413 Tyre 49.53 x 20	4	Buy
Trans-Dark Blue	54200 Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)	4	Buy
Black	56145 Wheel 30.4 x 20 without Pinholes, with Reinforced Rim	4	Buy
Trans-Clear	98138 Tile Round 1 x 1	4	Buy
Trans-Dark Blue	98138 Tile Round 1 x 1	4	Buy
Trans-Dark Blue	3023 Plate 1 x 2	2	Buy
Trans-Dark Blue	3069b Tile 1 x 2 with Groove	2	Buy
Trans-Red	98138 Tile Round 1 x 1	2	Buy
Trans-Clear	2654 Plate Round 2 x 2 with Rounded Bottom [Boat Stud]	1	Buy
[No Color/Any Color]	37609 Sticker Sheet for Set 42075-1	1	Buy
Black	3835 Weapon Axe	1	Buy
Light Bluish Gray	4599b Tap 1 x 1 without Hole in Spout	1	Buy
Black	56823c50 String Cord Thin (0.5mm) 50cm	1	Buy
Light Bluish Gray	61510 String Reel 2 x 1 x 2 Drum with Axle Hole	1	Buy
Dark Bluish Gray	62821b Gear Differential with Inner Tabs and Closed Center, 28 Bevel Teeth [Beveled Edge]	1	Buy
Yellow	76537 Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly]	1	Buy
Light Bluish Gray	4599b Tap 1 x 1 without Hole in Spout	1 spare	Buy
Trans-Dark Blue	54200 Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)	1 spare	Buy
Trans-Dark Blue	98138 Tile Round 1 x 1	1 spare	Buy
Trans-Clear	98138 Tile Round 1 x 1	1 spare	Buy
Trans-Orange	98138 Tile Round 1 x 1	1 spare	Buy
Trans-Red	98138 Tile Round 1 x 1	1 spare	Buy

Print set 42075 at home

The set tool makes an STL file for each of the 473 printable pieces, sorted by colour, plus a shopping list for the 40 to buy. Free, no account, and it runs on your own phone or computer.

Get the free print files

Pro adds print-ready plates for a 256 mm bed. About Pro

Parts data: Rebrickable, and it can differ slightly from your box. Part shapes: LDraw Parts Library (CC BY 4.0). Browse all sets. Independent project, not sponsored, authorised or endorsed by any brick company.