* Dealership: While likely the most expensive option, a Jeep dealership might still have the part in their system or be able to order it. They'll have the correct part number.
* Online Auto Parts Retailers: Sites like RockAuto, AutoZone, Advance Auto Parts, and others allow you to search by year, make, and model. You might need to look for diagrams or use descriptive search terms like "windshield wiper transmission bushing," "wiper motor arm bushing," or even "wiper arm pivot bushing." Be prepared to potentially look through diagrams to find the exact piece.
* Junkyards/Salvage Yards: This is the most budget-friendly option, but requires some searching. You'll need to find a 1991 Jeep Wrangler in a condition good enough to salvage the part.
* Local Auto Parts Stores: Visit local auto parts stores. While they may not have it in stock, they might be able to order it for you or suggest alternatives.
Important Note: Before ordering or searching, try to get the part number from a diagram specific to your 1991 Jeep Wrangler wiper motor. This will significantly speed up the search process. You can often find these diagrams online through repair manuals (like Haynes or Chilton) or parts websites that offer exploded views.
The bushing is a relatively small, unassuming part, so don't be surprised if finding it takes some persistence.