108-910AR LEGEND 10” T-550 ORIGINAL / RETROFIT CARTRIDGE
Fits Original 10” Frost-Free T-550 Sillcock
Repair your Legend T-550 original frost-free sillcock with the 108-910AR replacement cartridge. Designed for the Original / Retrofit version, this cartridge restores smooth operation, prevents leaks, and ensures reliable performance.
✅ Key Features
✅ Fits 10” Legend T-550 Original / Retrofit Frost-Free Sillcock
✅ Cartridge length: 13-5/8" (without handle) / 14-1/2" (with handle)
✅ Sillcock length: 10"
✅ Durable construction with dual O-ring seal (no end tabs)
✅ Tapered inlet connection with six wrench flats
✅ Easy identification: silver disc with black LEGEND lettering, Pat. Pend.
✅ Precision-fit stem and seal for long-lasting performance
⚠️ Note: The 108-910A (Improved Flow T-550A) is different: black disc with silver lettering, one O-ring with two tabs, and straight knurled inlet. Always confirm your sillcock model before ordering.
📊 Specifications Table
| Specification | Detail |
|---|
| Model |
108-910AR |
| Fits |
Legend T-550 Original / Retrofit 10” Frost-Free Sillcock |
| Sillcock Length |
10" |
| Cartridge Length Without Handle |
13-5/8" |
| Cartridge Length With Handle |
14-1/2" |
| Disc Color / ID |
Silver disc with black LEGEND lettering |
| Patent Marking |
Pat. Pend. |
| Inlet Connection |
Tapered with six wrench flats |
| Design Type |
Original / Retrofit |
| O-Rings / Tabs |
2 O-rings, no end tabs |
🔍 Identification Guide
Step 1: Check the Handle Identification Disc
| Feature | 108-910AR (T-550 Original / Retrofit) | 108-910A (T-550A Improved Flow) |
|---|
| Disc Color |
Silver |
Black |
| Lettering Color |
Black LEGEND |
Silver LEGEND |
| Patent Marking |
Pat. Pend. |
Pat. 5.392.805 D527.797 |
✅ Quick Tip: Silver disc with black letters → T-550 Original / Retrofit
Black disc with silver letters → T-550A Improved Flow
Step 2: Check Handle Inlet Style
| Feature | 108-910AR | 108-910A |
|---|
| Inlet |
Tapered, six wrench flats |
Straight, round knurled pad |
Step 3: Measure the Cartridge
| Model | Without Handle | With Handle | Sillcock Length |
|---|
| 108-910AR |
13-5/8" |
14-1/2" |
10" |
| 108-910A |
13-3/4" |
14-1/2" |
10" |
⚠️ Final Check Before Ordering
✅ Order 108-910AR (T-550 Original / Retrofit) if:
-
Handle disc is silver with black LEGEND lettering
-
Inlet connection is tapered with six wrench flats
-
Cartridge measures 13-5/8" without handle / 14-1/2" with handle
-
Sillcock length is 10"
-
Patent marking shows Pat. Pend.
✅ Order 108-910A (T-550A Improved Flow) if:
-
Handle disc is black with silver LEGEND lettering
-
Inlet connection is straight knurled pad
-
Cartridge measures 13-3/4" without handle / 14-1/2" with handle
-
Sillcock length is 10"
-
Patent marking is Pat. 5.392.805 D527.797
🔧 Common Problems This Fixes
-
Leaking or dripping frost-free sillcocks
-
Handle difficult to turn or poor water flow
-
Worn internal seals or O-rings
-
Corroded or damaged cartridge connection
🛠️ Installation Overview
-
Turn off water supply.
-
Remove existing stem assembly.
-
Identify your model using handle disc, inlet style, and cartridge measurement.
-
Install replacement cartridge (apply plumber’s grease to O-rings).
-
Reassemble handle and test for smooth operation.
❓ FAQ
Q: How do I know if I need 108-910AR or 108-910A?
A: Use the Quick Tip: Silver disc with black letters → T-550 Original / Retrofit. Black disc with silver letters → T-550A Improved Flow. Also check inlet style and cartridge length.
Q: Can I install this myself?
A: Yes — designed for easy DIY replacement using standard tools.
Q: Is 108-910AR interchangeable with 108-910A?
A: No — 108-910AR only fits Original / Retrofit T-550 10” frost-free sillcocks.
