← The LEGO Parts Guide › Technic

Engine (17 parts)

Parts to create an engine or implement a shifting system.

Engine (17 parts)
Show:CurrentAll Parts
View:ScaleLabelTable
Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
3L Driving Ring Conn.18948
1765
2241208
671444
15586
2015-202612 years
3L Driving Ring18947
2350
971817
421861
15652
2015-202612 years
Driving Ring Extension, 4-Tooth32187
1067
2771084
1291020
71607
1999-201921 years
Driving Ring Extension, 8-Tooth35186
1129
2441150
1031154
81403
2018-20269 years
Changeover Catch6641
1479
1431505
801333
52290
1996-202631 years
Rotary (Wave) Shifter35188
4382
154058
113657
15998
2018-20247 years
Clutch w/ Axle Hole, Outside46834
4303
163959
113652
15975
2019-20268 years
Clutch w/ Axle Hole, Inside46835
4304
163959
113652
15975
2019-20268 years
Cam6575
719
650687
187811
12880
1994-202633 years
Engine Cylinder, Smooth6608
4026
402667
64647
15756
2025-20262 years
N
Engine Cylinder w/ Studs2850
945
648689
1331003
52243
1990-202536 years
Engine Piston2851
873
680663
1331002
71587
1990-202637 years
Connecting Rod2852
1089
671672
134994
24064
1990-202637 years
Crankshaft2853
798
636697
240690
61849
1990-202637 years
Center Crankshaft2854
1006
360939
147935
61860
1990-202637 years
Crank Disk4368
2473
1101696
272343
15627
2024-20263 years
N
Piston w/ Stud4369
2264
1811350
272338
15595
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.