Toyota A1 and A3 Oil Filters

[sgk128]

Hi Guys,

Ive been looking up these 2 filters and trying to figure are there any differences to them. Some suggested one have an extra O ring, and then others says the A3 is a newer revision of the A1. Anyone know if there is actually any physical differences to these 2? differences in quality? are they interchangeable? Thanks in advance

 

[DCDG]

That appears to be the situation from what I can tell A1 is cartridge with mandatory o-ring A3 supplying the smaller drain cap o-ring seal.

 

[nthach]

A3 is for Lexus RWD applications with the 2GR-FSE or 1UR-FE. But the aftermarket has it as an Fram 10158. A1 is the FWD 2GR/2AR filter, A4 is the tall 3UR filter, A6 is the tiny Corolla/Prius 2ZR filter.

 

[sgk128]

thanks for the reply. I have a 2020 Lexus 450h and when I type the vin into lexus parts, it gives me the A1 filter. When I visit a dealer to buy filters, the dealer gives me A3 filter. Are the interchangeable? should i switch it immediately?

 

[mdc09]

They are the same. It's been like that for several years now.

 

[sgk128]

not very efficient to have 2 skus that are basically the same. Even price is the same if Im not mistaken.

 

[mdc09]

The filter is the same it's just the A3 doesn't come with the drain tool or drain plug o-ring. The A6 filter doesn't come with these either.

 

[mdc09]

But if in doubt you can always call your local dealer

 

[slacktide_bitog]

Different vendors?

 

[ESP9935]

Different vendors?

The A3 is for horizontally mounted applications with cartridge caps that don't have the drain function, so it's missing the drain/extra o-ring. That's the only difference