John Deere oil filters have part numbers, and you can match them to filters from other manufacturers using cross-reference charts
John Deere assigns specific part numbers to the oil filters designed for each model and engine type. Those same filters are often made by or sold under other brand names — Fram, Motorcraft, Purolator, and others — at lower cost or with easier local availability. A cross-reference chart matches a John Deere part number to its equivalent filters from other makers, so you can buy the right filter without paying John Deere prices or waiting for dealer stock.
The catch is that cross-references vary by source, and not every filter listed as equivalent will work in your machine. The safest approach is to start with your John Deere part number, then verify the cross-reference against the filter maker's own documentation before you buy.
Key Takeaways
- Every John Deere filter has a part number printed on the canister or listed in your owner's manual; that number is your starting point for any cross-reference.
- John Deere filters are often made by the same manufacturers that sell filters under other brand names, so a Fram or Purolator equivalent usually exists.
- Cross-reference charts from filter makers, John Deere dealer sites, and equipment forums can point you to alternatives, but you should verify the thread size and bypass valve rating match your machine.
- Buying a cross-referenced filter saves money and time, but installing the wrong filter — wrong thread, wrong bypass pressure — can damage your engine.
Where to find your John Deere filter part number
Your owner's manual lists the correct filter part number for your model and engine. If you do not have the manual, the part number is usually printed on the old filter itself — look for a number starting with "AM" or "RE" (John Deere's prefixes) or a longer alphanumeric code. Write down the exact number before you search for a cross-reference.
If the old filter is too dirty to read, contact a John Deere dealer with your machine's model and serial number. They can tell you the correct part number in minutes. You can also search online for "[your model number] oil filter" — many equipment sites list the part number in their product pages.
How cross-reference charts work and where to find them
A cross-reference chart is a table that lists a John Deere part number in one column and equivalent part numbers from other makers in the next columns. For example, a John Deere filter part number AM125424 might cross-reference to a Fram PH8A or a Purolator PL14610. The chart tells you those three filters are physically and functionally the same.
Filter manufacturers publish cross-reference charts on their websites — Fram, Purolator, Motorcraft, and Fleetguard all maintain searchable databases. John Deere dealer websites sometimes publish cross-references too. Equipment forums and aftermarket parts sites also host charts, though these are less reliable because they are user-maintained and sometimes contain errors.
Start with the filter maker's own chart. If you find a cross-reference there, you can trust it because the manufacturer stands behind it. If the filter maker's site does not list your John Deere number, try a second source, but then verify the specs before you buy.
What to verify before you buy a cross-referenced filter
Not every filter listed in a cross-reference will work in your machine. Three things must match: the thread size (the connection at the base of the filter), the bypass valve pressure rating (how much pressure the valve opens at), and the overall dimensions (so it fits in the housing without hitting other parts).
The thread size is the easiest to check. John Deere filters use either 3/4-16 or 13/16-16 threads — the numbers refer to the diameter and pitch. Your owner's manual or the old filter's canister will show which one. The cross-referenced filter must have the same thread size, or it will not screw on.
The bypass valve rating is harder to find but critical. If the replacement filter's bypass opens at a different pressure than the original, it can let unfiltered oil through the engine at startup or under load, or it can restrict flow and starve the engine of oil. Check the filter maker's spec sheet for the bypass pressure, and compare it to the John Deere manual's specification for your model. They should match within a few pounds per square inch.
Dimensions matter less often, but some John Deere housings are tight. If the cross-referenced filter is taller or wider than the original, it might not fit. The filter maker's spec sheet includes height and diameter; compare those to your old filter or the manual's drawing.
Common John Deere filter part numbers and their cross-references
| John Deere Part Number | Common Cross-References | Thread Size | Typical Use |
|---|---|---|---|
| AM125424 | Fram PH8A, Purolator PL14610 | 3/4-16 | Compact tractors, small engines |
| RE62418 | Fram PH3593, Motorcraft FL-400 | 3/4-16 | Mid-size tractors |
| RE509677 | Fram PH8170, Purolator PL14459 | 13/16-16 | Large tractors, combines |
| RE525906 | Fram PH9688, Fleetguard LF3325 | 13/16-16 | Diesel engines, large equipment |
This table shows examples only. Your machine's correct part number may differ. Always verify against your owner's manual and the filter maker's spec sheet before you buy. Cross-references change as manufacturers update their product lines, so a number that was correct two years ago might not be accurate today.
Where to buy cross-referenced filters and what to expect on price
Aftermarket filters from Fram, Purolator, Motorcraft, and Fleetguard are sold at auto parts stores, farm equipment suppliers, online retailers, and big-box stores. Prices vary by brand and retailer, but a cross-referenced filter typically costs 30 to 50 percent less than the John Deere equivalent. A John Deere filter might cost $25 to $40; the same filter sold under another brand name might cost $15 to $25.
Online retailers often have the lowest prices, but shipping can add cost and time if you need the filter today. Local auto parts stores and farm suppliers let you pick up the filter when ready and ask questions if you are unsure about the cross-reference. Some farm dealers will cross-reference for you if you bring in your old filter or your machine's model number.
Buying a cheaper cross-referenced filter is safe as long as you have verified the specs. The filter is made to the same standard whether it carries a John Deere label or a Fram label. The risk is not in the brand — it is in buying the wrong part number by mistake.
Frequently Asked Questions
Can I use any filter that fits the thread size?
No. Thread size is necessary but not sufficient. The bypass valve pressure and overall dimensions must also match. A filter with the right thread but wrong bypass pressure can damage your engine by letting unfiltered oil through or restricting flow. Always check the spec sheet.
What if I cannot find a cross-reference for my John Deere filter number?
Call a John Deere dealer or the filter maker's customer service line with your part number. They can tell you whether a cross-reference exists or whether your filter is unique to John Deere. If no cross-reference exists, you will need to buy the John Deere part or find a used equivalent online.
Is a John Deere filter better than a cross-referenced one?
No. A cross-referenced filter is made to the same specifications and often by the same manufacturer. The John Deere label adds cost but not quality. The only reason to buy a John Deere filter is if no cross-reference exists or if you want the assurance of buying directly from the equipment maker.
How do I know if a cross-reference is wrong after I install it?
If the filter does not screw on, the thread size is wrong — stop and get the correct one. If it screws on but leaks around the seal, the diameter or sealing surface is wrong. If the engine runs but the oil pressure warning light comes on, the bypass valve pressure may be wrong. In all cases, drain the oil, remove the wrong filter, and install the correct one when ready.
Can I use a cross-referenced filter from a different brand each time I change oil?
Yes, as long as you verify the cross-reference each time. Filter part numbers and cross-references change as manufacturers update their lines. A Fram filter that was correct last year might be discontinued this year, and a new Fram number might not cross-reference to your John Deere model. Check the spec sheet every time to be sure.