← The LEGO Parts Guide › Technic

Engine (17 parts)

Parts to create an engine or implement a shifting system.

Engine (17 parts)
Show:Current PartsAll
View:ScaleLabelTable
Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
3L Driving Ring Conn.18948
1768
2271206
691441
15614
2015-202612 years
3L Driving Ring18947
2346
981821
431855
15680
2015-202612 years
Driving Ring Extension, 4-Tooth32187
1078
2771092
1291023
71635
1999-201921 years
Driving Ring Extension, 8-Tooth35186
1132
2491147
1051150
81423
2018-20269 years
Changeover Catch6641
1484
1441503
811333
52317
1996-202631 years
Rotary (Wave) Shifter35188
4401
154080
113677
16025
2018-20247 years
Clutch w/ Axle Hole, Outside46834
4321
163981
113672
16002
2019-20268 years
Clutch w/ Axle Hole, Inside46835
4322
163981
113672
16002
2019-20268 years
Cam6575
723
660686
189808
12899
1994-202633 years
Engine Cylinder, Smooth6608
3646
412654
74378
24237
2025-20262 years
N
Engine Cylinder w/ Studs2850
952
648693
1331007
52268
1990-202536 years
Engine Piston2851
879
681666
1341002
71614
1990-202637 years
Connecting Rod2852
1093
672677
135997
24084
1990-202637 years
Crankshaft2853
804
639698
242692
61871
1990-202637 years
Center Crankshaft2854
1016
360944
147943
61881
1990-202637 years
Crank Disk4368
2364
1311571
312180
15639
2024-20263 years
N
Piston w/ Stud4369
2125
2151233
312177
15617
2024-20263 years
N

The LEGO Parts Guide is a work in progress

This is a handcrafted experience to help you browse LEGO parts in a simpler way. If you have ideas to make it better or encounter any issues, please send me an email at tom@tomalphin.com — Thanks!

Check out the About the LEGO Parts Guide page to learn more about why I created this guide. It also includes a detailed version history with images of early prototypes of this guide.


Support the LEGO Parts Guide

The LEGO Parts Guide is an extension of my LEGO Brick Labels project. If you want to support this project and gain access to behind-the-scenes updates, consider supporting the project at patreon.com.

The LEGO® Parts Guide. © 2026 Brick Architect LLC.
Content and design by Tom Alphin. Use of this content without permission is prohibited.
brickarchitect.com

Brick Architect earns a commission from qualifying purchases at partner sites such as LEGO.com and Amazon. (For a complete list of affiliate programs, visit About Brick Architect.)

LEGO® is a trademark of the LEGO Group which does not sponsor, authorize or endorse this site. As a member of the Recognized LEGO® Fan Media program, we abide by the LEGO Fair Play and Novelty policies by not sharing leaked photos of unreleased sets.

This guide uses external data from Rebrickable, BrickLink, Brickset, and LDraw.