Instead of a general list, which would be extremely long and potentially inaccurate, here's a more helpful approach:
To find interchangeable parts, you need to:
1. Identify the specific part: Engine, transmission, brake caliper, headlight, etc. Be as specific as possible (e.g., "right front brake caliper," not just "brake caliper"). Part numbers are extremely helpful.
2. Use online parts catalogs: Websites like AutoZone, Advance Auto Parts, Napa Auto Parts, RockAuto, etc., allow you to search by vehicle year, make, and model. You can find the part number for your Villager and then see if that part number (or a cross-referenced equivalent) is listed for a 1999 Toyota Sienna. Many sites show compatibility across models.
3. Check part numbers: If you have the part number from your Villager, try searching it on these websites. Often, the description will explicitly mention compatible vehicles.
4. Consult a mechanic: If you're unsure, a qualified mechanic can be invaluable in identifying suitable replacement parts. They often have access to more detailed parts databases and can assess compatibility issues.
General Categories Where Interchangeability is *Likely*, but Requires Specific Part Number Verification:
* Engine components (with caveats): Many engine components *might* be interchangeable, but ensure the engine codes match precisely between the Villager and Sienna. Even minor differences can lead to incompatibility.
* Suspension components: Some suspension parts (struts, control arms, etc.) *may* be interchangeable. Again, part number verification is crucial.
* Brakes: Brake components often have similar designs across models, but sizes and specifications must match.
* Electrical components: Many electrical parts (lights, switches, etc.) might be similar but may have different connectors or mounting points.
* Interior components: Certain interior parts (door handles, some trim pieces, etc.) *could* be interchangeable, though this is less certain without specific part numbers.
Important Note: While the Villager and Sienna share a platform, minor differences in design and specifications *do* exist. Always verify part compatibility using part numbers or consulting a parts professional before purchasing any replacement parts. Using incompatible parts can lead to damage or safety issues.
