Engine
Find BMW engine diagram references, position numbers, and OEM part numbers.
BMW catalog · OEM reference pages
BMW Parts Catalog
Search BMW part numbers, browse model catalogs, and inspect diagram references built from structured fitment records. If you know your BMW model but not the part number, start with model-first lookup.
Guided lookup
Open Guided Lookup Know the BMW model and component, but not the part number?
Use model-first lookup to search model-specific diagrams and fitment rows by system, location, or component name.
| What you know | Example | Where to start |
|---|---|---|
| Model + component | Isetta 250 brake master cylinder | Guided lookup |
| Model + system/location | Isetta 250 brake system | Guided lookup |
| Diagram position | Position 01 in brake diagram | Diagram part table |
Browse by system
BMW catalog groups users search for.
These system categories map to common search behavior such as “BMW brake parts diagram”, “BMW fuel tank part number”, or “BMW steering column diagram”.
Brakes
Find BMW brakes diagram references, position numbers, and OEM part numbers.
Bodywork
Find BMW bodywork diagram references, position numbers, and OEM part numbers.
Lighting
Find BMW lighting diagram references, position numbers, and OEM part numbers.
Fuel Supply
Find BMW fuel supply diagram references, position numbers, and OEM part numbers.
Transmission
Find BMW transmission diagram references, position numbers, and OEM part numbers.
Front Axle
Find BMW front axle diagram references, position numbers, and OEM part numbers.
Rear Axle
Find BMW rear axle diagram references, position numbers, and OEM part numbers.
Steering
Find BMW steering diagram references, position numbers, and OEM part numbers.
Vehicle Electrical System
Find BMW vehicle electrical system diagram references, position numbers, and OEM part numbers.
Heating and Air Conditioning
Find BMW heating and air conditioning diagram references, position numbers, and OEM part numbers.
Wheels and Tires
Find BMW wheels and tires diagram references, position numbers, and OEM part numbers.
Lookup paths
Start from the information you already have.
PartNumberFinder supports multiple paths because users arrive with different clues: a part number, a model code, a part name, or a diagram topic.
Exact part number
Best when you already have an OEM number from a label, invoice, or used part listing.
Model, chassis, and component
Use guided lookup when you know the BMW model and part location, but need the OEM part number.
Part name and system
Use searches like alternator, brake pipe, fuel tank, cylinder head, or window lifter switch.