There isn’t a separate RAM option labeled "Aisin" or "68RFE"—the 68RFE is the model name for the AISIN-built six-speed automatic used in many Ram heavy-duty trucks. If your Ram has a 68RFE, it is the AISIN-transmission, and you can verify this via the transmission identification tag or the vehicle’s VIN/build sheet.
What the terms mean for Ram trucks
The acronym 68RFE identifies the six-speed automatic transmission design. AISIN (often written AISIN or Aisin) is the manufacturer that built that specific transmission. In practice, the two terms describe different aspects of the same component: the model and the maker. This distinction matters for parts compatibility, service procedures, and replacement codes.
How to tell which transmission you have
Use these steps to confirm the exact transmission in your RAM. The most reliable source is the physical identification tag on the transmission itself; if that's unreadable, the VIN/build sheet through a dealer or trusted decoder will help.
- Find the transmission identification tag on the side of the case (often near the bell housing or along the transmission body). Look for the model code printed on the tag, such as "68RFE," and a manufacturer name such as "AISIN" or "Aisin."
- Read the code. If the tag shows "68RFE" and "AISIN" (or "Aisin"), you are looking at the AISIN-built six-speed automatic commonly used in Ram diesel applications.
- If the tag is missing or unreadable, use the vehicle’s VIN to pull the original equipment list from a dealer portal or trusted decoder; look for the transmission entry that specifies "68RFE" or "AISIN."
- As a backup check, compare known characteristics: 68RFE is a six-speed electronically controlled automatic; older Ram automatics (not 68RFE) may have different model numbers and control arrangements and usually do not identify AISIN on the tag in the same way.
Note: The 68RFE designation is the model code; AISIN is the manufacturer. In practice, seeing both on the tag confirms you have the AISIN-built 68RFE transmission.
Summary
Bottom line: If your RAM’s transmission tag reads 68RFE and lists AISIN as the manufacturer, you’re dealing with the AISIN-built six-speed automatic. There isn’t a separate RAM option simply labeled “Aisin.” Use the ID tag or the VIN/build sheet to verify, especially when ordering parts or planning maintenance. Knowing the exact transmission helps ensure correct service and compatibility.
How do I tell if my Ram has an Aisin transmission?
So that's not a good sign. Already but yeah so first sign is that you'll have the dipstick. On the driver's. Side. But say they really wanted to screw somebody over and they put the dipstick.
How to tell if it's Aisin or 68RFE?
The Aisin transmission has the dipstick on the driver side and the 68RFE transmission, which uses the 6 bot transfer case, has the transmission on the passenger side of the engine. Also, the Aisin transmission has the dipstick on the driver's side of the truck, the 68RFE dipstick is on the passenger side.
How do I tell if I have a 68RFE?
If you're not sure which transmission your truck has, here are a few ways to tell:
- Build Sheet or Window Sticker: Enter your VIN on Ram's website or Mopar's build sheet lookup tool.
- Transmission Pan Shape: The 68RFE has a distinct rectangular pan with angled corners, while the AS69RC pan is larger, squarer, and deeper.
How do I tell what transmission I have in my Ram 2500?
4 ways to identify your vehicle's transmission system
- The owner's manual. A great place to start is to locate your vehicle's owner's manual.
- Placard on the driver's side door. Open the driver's side door and look for a white placard with small black lettering.
- Oil pan.