SERGIN ENGINES / GENERAL MOTORS DIRECTORY
GM Engines & Auto Parts
Explore General Motors brands, engine families and commonly requested replacement part types. Current and discontinued marques appear together for reference.
GM
ENGINE CODE • OEM NUMBER • VINFitment, stock, condition and price are checked individually.
12Current & former GM marques
428Curated GM code / family entries
122Popular parts types
16Automotive parts systems
01 / SELECT A VEHICLE MAKE
Choose your GM brand.
Includes historic badges and GM-era brands; not every engine listed was designed by GM.
GMC
United States
Cadillac
United States
Buick
United States
Pontiac
United States (historic)
Oldsmobile
United States (historic)
Saturn
United States (historic)
Hummer
United States (historic)
Holden
Australia (historic)
Opel
Germany (GM-era legacy)
Vauxhall
United Kingdom (GM-era legacy)
Saab
Sweden (GM-era legacy)02 / ENGINE FAMILIES
LS, LT, Duramax, Ecotec and more.
Browse engine-code references across modern and legacy GM-family vehicle badges. Open each engine code for its own detail page.
Explore engine codes ↗03 / REQUESTED PARTS
Components for drivetrain and maintenance.
Find cylinder heads, fuel injectors, brakes, transmissions, cooling and electrical components by vehicle brand.
Browse GM parts ↗Important identification note
General Motors engine codes can cover multiple variations. GM-era Opel, Vauxhall, Saab and Holden are historical ownership associations; not every engine was engineered by GM. A directory entry does not guarantee fitment, interchange, OEM sourcing, available stock, or a quoted price. Verify OEM numbers and VIN before ordering.
READY TO SOURCE?Let's find the right part
Start your enquiry ↗Let's find the right part
for your next move.
Tell us what you're looking for. We'll use your engine code or VIN details to review compatibility.