FL300 is a shorter FL1A
Here's how they break down in WIX
FL1A
Part Number: 51515
UPC Number: 765809515154
Principal Application: Chrysler Family of Cars/Trucks (57-70), Ford Family of Cars/Trucks (57-00), Mazda Trucks (94-00), Toyota Landcruiser (71-96) - (Two Quart version is 51773)
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 5.178
Outer Diameter: 3.660
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=13/23
Burst Pressure-PSI: 270
Max Flow Rate: 7-9 GPM
Nominal Micro Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.834 2.462 0.200
FL300
Part Number: 51068
UPC Number: 765809510685
Principal Application: Agco Tractors, Chrysler (70-91), Ford/Mercury (83-97), Kubota Engines, Land Rover (95-04), Toyota (68-90)
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 4.338
Outer Diameter Top: 3.660
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=10/26
Burst Pressure-PSI: 275
Max Flow Rate: 7-9 GPM
Nominal Micro Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.834 2.462 0.200
FL200 is considered the same as the FL300 as far as Wix is concerned. It's also not found on Donalson or Purolator and is the same as the FL300 in Baldwin