Here is a list of oil filters that will fit on the 97-01 Birds. It came from http://www.micapeak.com/bike/ST1300/FilterXRef.html
These motorcycles all use the same spin-on filters with 20 x 1.5mm threads, 14 psi by-pass valve, anti-drain back valve, gasket diameter approximately 2.3 inches, O.D. approximately 2.75 inches, length approximately 2.5 to 3.5 inches. If your bike has a lot of room around the oil filter, I suggest the longer models.
Motorcycle-Specific Filters.
· AC Delco PF2135 about $10.
· AMSOil SMF103, about $9.
· FRAM PH6017A about $7.
· Honda 15410-MCJ-000, about $12.
· K&N KN-204, about $13. Has a metric nut on the end for easy removal.
· NAPA Gold 1358, Carquest 85358, WIX 51358 about $7 to $8.
· Purolator Motorcycle ML16817 about $6. Imported, not made by Purolator.
· STP SMO 07, about $7.
Automobile Filters, about 2.5 inches long
· Mobil M1-108, about $12.
· Purolator Pure One PL14612 about $6.
· Bosch 3300 about $6. About 64mm, doesn't quite fit oil filter wrenches. A real pain.
· WalMart SuperTech ST6607 about $2. Made by Champion.
· AC Delco PF1237 about $6.
· NAPA Gold 1365 about $6.
· Purolator L14622 about $4.
· STP S-02876 about $3.
· Baldwin B1400.
· Hastings LF113.
Automobile Filters, about 3.25 inches long
· Bosch 3323 about $6
· Mobil 1 M1-110 about $10
· Purolator Pure One PL14610 about $6
· Purolator L14610 about $4
· NAPA Gold 1356, Carquest 85356, WIX 51356 about $6
· Deutsch D-370 about $4
· AC Delco PF-2057 about $6
· Motorcraft Long Life FL-821 about $4
· STP S-02867 about $3
· FRAM, Castrol, Penske 7317 about $3
· Baldwin B1402.
· Hastings LF240.