Crocodile Locomotive (4551): parts list and STL files

Set 4551, Crocodile Locomotive, from 1991, has 314 pieces in 98 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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Crocodile Locomotive, built (3D picture) — What it looks like built. A 3D picture, not a photo, made from the LDraw model by Robert Paciorek (CC BY 2.0).

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262to print

52to buy

3spares

98kinds

262 to print, 52 to buy, 3 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 4551

Parts in set 4551, Crocodile Locomotive
Colour	Part	Qty	Print or buy
Red	3023 Plate 1 x 2	26	Print
Red	2877 Brick Special 1 x 2 with Grille	24	Print
Red	3004 Brick 1 x 2	12	Print
Red	3005 Brick 1 x 1	10	Print
Black	3021 Plate 2 x 3	10	Print
Light Gray	2877 Brick Special 1 x 2 with Grille	8	Print
Black	3034 Plate 2 x 8	8	Print
Black	3023 Plate 1 x 2	7	Print
Red	3010 Brick 1 x 4	6	Print
Light Gray	3023 Plate 1 x 2	6	Print
Light Gray	3794a Plate Special 1 x 2 with 1 Stud without Groove (Jumper)	6	Print
Black	3022 Plate 2 x 2	5	Print
Black	3710 Plate 1 x 4	5	Print
Black	2420 Plate 2 x 2 Corner	4	Print
Light Gray	2875 Brick Sloped 45° 2 x 6 x 2/3	4	Print
White	2877 Brick Special 1 x 2 with Grille	4	Print
Black	2923 Hinge Bar 2.5L with 2 and 3 Fingers on Ends (Pantograph Shoe Holder)	4	Print
Black	3020 Plate 2 x 4	4	Print
Light Gray	3021 Plate 2 x 3	4	Print
Black	3069b Tile 1 x 2 with Groove	4	Print
White	3460 Plate 1 x 8	4	Print
Black	3660 Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	4	Print
Red	3710 Plate 1 x 4	4	Print
Black	3738 Plate 2 x 8 [7 Holes]	4	Print
Red	4070 Brick Special 1 x 1 with Headlight	4	Print
Black	4081b Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]	4	Print
Red	4162 Tile 1 x 8 with Groove	4	Print
Red	4477 Plate 1 x 10	4	Print
Black	6141 Plate Round 1 x 1 with Solid Stud	4	Print
Black	3004 Brick 1 x 2	3	Print
Red	3020 Plate 2 x 4	3	Print
Red	2431 Tile 1 x 4 with Groove	2	Print
Black	2434 Brick Special 2 x 4 x 2 with Studs on Sides	2	Print
Black	2460 Tile Special 2 x 2 with Top Pin	2	Print
Light Gray	2876 Brick Wedged, Sloped 45° 6 x 6 Double / 33° [Train Roof End]	2	Print
Black	3001 Brick 2 x 4	2	Print
Red	3001 Brick 2 x 4	2	Print
Red	3003 Brick 2 x 2	2	Print
White	3009 Brick 1 x 6	2	Print
Red	3009 Brick 1 x 6	2	Print
Light Gray	3031 Plate 4 x 4	2	Print
Light Gray	3032 Plate 4 x 6	2	Print
Red	3036 Plate 6 x 8	2	Print
Black	3037 Brick Sloped 45° 2 x 4	2	Print
Black	3045 Brick Sloped 45° 2 x 2 Double Convex	2	Print
Red	3665 Brick Sloped Inverted 45° 2 x 1	2	Print
Red	3700 Brick 1 x 2 [1 Pin Hole]	2	Print
Black	3709 Plate 2 x 4 [3 Holes]	2	Print
White	3710 Plate 1 x 4	2	Print
Black	3747a Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin	2	Print
Light Gray	4274 Pin 1/2 without Friction Ridges	2	Print
Light Gray	4531 Hinge Tile 1 x 2 1/2 with 2 Fingers on Top	2	Print
Red	4744 Brick Curved 2 x 4 x 2 Double [Plain]	2	Print
Black	2412b Tile Special 1 x 2 Grille with Bottom Groove	1	Print
Red	2445 Plate 2 x 12	1	Print
Light Gray	3001 Brick 2 x 4	1	Print
Black	3003 Brick 2 x 2	1	Print
Black	3010 Brick 1 x 4	1	Print
Red	3029 Plate 4 x 12	1	Print
Black	3032 Plate 4 x 6	1	Print
Black	3298 Brick Sloped 33° 3 x 2	1	Print
Black	3666 Plate 1 x 6	1	Print
Red	3795 Plate 2 x 6	1	Print
Black	3832 Plate 2 x 10	1	Print
Black	3956 Bracket 2 x 2 - 2 x 2	1	Print
Black	4588 Brick Round 1 x 1 with Fins, Open Stud	1	Print
Black	4589 Cone 1 x 1 [No Top Groove]	1	Print
Black	4871 Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed	1	Print
Black	2412b Tile Special 1 x 2 Grille with Bottom Groove	1 spare	Print
Light Gray	4274 Pin 1/2 without Friction Ridges	1 spare	Print
Trans-Clear	6141 Plate Round 1 x 1 with Solid Stud	6	Buy
Black	2878c01 Wheel Holder, Train with Wheels [Complete Assembly]	4	Buy
Trans-Clear	4183 Glass for Train Door Lip On Top and Bottom	4	Buy
Black	2871a Train Motor Decorative Side 10 x 2 x 2 with Closed Hub Points (for 9V Train Motor)	2	Buy
Black	2881 Train Pantograph Shoe with Hinge	2	Buy
Black	2920 Train Coupling New	2	Buy
Red	2924a Train Front with 1 x 4 x 3 Cutout	2	Buy
Light Gray	298c02 Lever Small Base with Black Lever	2	Buy
White	3069bpr0039 Tile 1 x 2 with Space Computer Print	2	Buy
White	3069bpr0043 Tile 1 x 2 with Telemetry Panel Print	2	Buy
Black	3475b Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]	2	Buy
Black	3626b Minifig Head [Plain] [Blocked Open Stud]	2	Buy
Black	4022 Train Buffer Beam	2	Buy
Yellow	4079 Seat / Chair 2 x 2	2	Buy
Red	4181pr0008 Door 1 x 4 x 5 Left White Stripe Train Logo Print	2	Buy
Red	4182pr0008 Train Door 1 x 4 x 5 Right White Stripe Train Logo Print	2	Buy
Black	73092 Magnet Cylindrical	2	Buy
[No Color/Any Color]	164585 Sticker Sheet for Sets 4536-1, 4543-1, 4546-1, 4551-1	1	Buy
Black	2342 Equipment Control Panel	1	Buy
Black	3039pr9970 Brick Sloped 45° 2 x 2 with 3 Gauges and 3 Knobs Print	1	Buy
Black	4025 Tile Special 6 x 4 with Beveled Edges and 5mm Pin (Train Bogie Plate)	1	Buy
Black	4746 Tail 4 x 2 x 2, Rocket	1	Buy
Black	70358 Motor, Train Base, 9V [Complete Assembly]	1	Buy
Red	3624 Cap, Police Style	1	Buy
Yellow	3626apr0001 Minifig Head Standard Grin Print [Solid Stud]	1	Buy
Black	970c03 Hips and Black Legs	1	Buy
Blue	973c28h01pr0005 Torso, Jacket, Red Tie, Gold Buttons and Train Logo Print, Blue Arms, Yellow Hands	1	Buy
Light Gray	298c02 Lever Small Base with Black Lever	1 spare	Buy

Print set 4551 at home

The set tool makes an STL file for each of the 262 printable pieces, sorted by colour, plus a shopping list for the 52 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.