In the digital age, many technicians rely on online lookup tools. However, these tools are not always infallible. They often rely on VIN decoding that may not account for mid-year production changes or specific regional variations. The PDF catalog offers a level of granularity that web databases sometimes miss.

While not a complete catalog, if you go to RockAuto.com and look up an Aisin oil pump for your car, they often have a "Info" button. Clicking this frequently opens a scanned PDF of the Aisin spec sheet (including dimensions and torque specs) for that specific part number.

A: Yes. Aisin distributes the catalog freely to repair shops and retailers. You should never pay a website for a PDF download.

Different engines require different bypass spring pressures. The catalog lists the "Regulating Pressure" in PSI or kPa. A high-volume pump is useless if the relief valve opens too early. Aisin calls this the "Oil Pressure Relief Valve Setting."

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