Parker Coupler Part Numbers: FEM, 6600 & 60 Series Size Guide
Parker makes several coupler styles. Find the part number stamped on the metal body of your coupler and type it in the box below, or use the charts. No number? Measure it instead.
Free Coupler Size Finder
Enter your part number or a measurement:
We'll tell you the size and the Tractor Relief Tool™ that fits. Searches 1,450+ part numbers.
- ✓Use the number stamped on the metal body of the coupler, not the hose. Hose printing (SAE 100R2, PSI, W.P.) won't match.
- ✓No part number? Measure across the male end (the plug, not the female socket) and type it, like 24.5 mm or 0.96 in. See how to measure →
- ✓Dashes, spaces and capitals don't matter (FEM-501-8FP = fem5018fp).
- ✓Can't read the whole number? Type the first few characters you can see.
Coupler styles in plain English
- Flat face (ISO 16028): the front end is flat. Most skid steers and newer loaders use these.
- Ag / Pioneer (ISO 5675): the most common style on farm tractors.
- 7241-A and 7241-B: two other tractor styles. They look a lot like ag couplers, but each one needs its own tool.
Not sure which you have? See photos and how to measure →
Parker Coupler Size Charts
Step 1: Look at how your number starts.
| Starts with | Style | Where the size is |
|---|---|---|
| FEM or FF | Flat face | Right after FEM (FEM-501) |
| 6601, 6602 or 6608 | 7241-A | The last number (6601-12-10) |
| H2, BH6 (60 series) | 7241-B | See examples below |
Step 2: Read your size.
FEM flat face:
| Your number starts with | Your size is |
|---|---|
| FEM-25 | 1/4" |
| FEM-37 | 3/8" |
| FEM-50 | 1/2" |
| FEM-62 | 5/8" |
| FEM-75 | 3/4" |
| FEM-100 | 1" |
On FEM numbers, ending in 1 (FEM-501) = female, ending in 2 (FEM-502) = male. The number after the dash (-8FP) is the hose thread, not the size.
6600 series (7241-A): use the last number.
| Last number | Your size is |
|---|---|
| -6 | 3/8" |
| -10 | 1/2" |
| -12 | 3/4" |
| -16 | 1" |
6601 = female, 6602 = male, 6608 = female. The middle number is the hose thread.
No tool yet: Parker/Snap-tite 71 series and NS series. Email us if you need one.
Have a Pioneer coupler (4050, 8010)? Parker makes those too. See the Pioneer size chart.
Know your size now? Shop Tractor Relief Tools™ for Parker Couplers →
Common Parker Part Numbers and Sizes
| Part number | Size | Matching tool |
|---|---|---|
| FEM-501-8FP | 1/2" flat face, female | 1/2" Flat Face Tool → |
| FEM-502-8FP | 1/2" flat face, male | 1/2" Flat Face Tool → |
| FEM-371-6FP | 3/8" flat face, female | 3/8" Flat Face Tool → |
| 6601-12-10 | 1/2" 7241-A, female | 1/2" 7241-A Tool → |
| 6608-12-12 | 3/4" 7241-A, female | 3/4" 7241-A Tool → |
| H2-63 / H2-62 | 1/4" 7241-B | 1/4" 7241-B Tool → |
| BH6-60 | 3/4" 7241-B | 3/4" 7241-B Tool → |
Parker Coupler Won't Connect? Fix It in Seconds.
It's almost always pressure trapped in the disconnected half. The Tractor Relief Tool™ pushes onto the coupler, releases that pressure, and you reconnect. No hammer, no loosened fittings, no oil spray.
- Built for this one job. Lives in the cab.
- Steel, aluminum and stainless steel.
- Right Size Guarantee: easy exchange within 30 days.
Still not sure of your size? Search your part number or measurement:
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Powered by Tractor Relief Tool™. Parker is a brand of Parker Hannifin. Tractor Relief Tool™ is not affiliated with Parker. Always confirm your size before ordering.
