108-906AR LEGEND 6” T-550 CARTRIDGE & STEM ASSEMBLY
Fits Original 6” Frost-Free T-550 Sillcock
Repair your outdoor faucet with the Legend 108-906AR replacement cartridge, designed specifically for the Original T-550 sillcock. This retro-fit cartridge offers a reliable solution with an integrated stem and cartridge design for easier installation.
✅ Key Features
✅ Fits 6” Original T-550 Frost-Free Sillcock
✅ Cartridge length: 9-5/8" (without handle) / 10-1/2" (with handle)
✅ Retro-fit design: integrated stem and cartridge
✅ Dual O-ring seal for a secure fit (no end tabs)
✅ Easy identification: silver disc with black LEGEND lettering (Pat. Pend.)
✅ Tapered inlet connection with six wrench flats
⚠️ Note: If your cartridge has one O-ring and two tabs, you may need the Legend 108-906A instead.
📊 Technical Specifications
| Specification | Detail |
|---|
| Model |
108-906AR |
| Fits |
Legend T-550 Original 6” Frost-Free Sillcock |
| Cartridge Length Without Handle |
9-5/8" |
| Cartridge Length With Handle |
10-1/2" |
| Disc ID |
Silver disc with black LEGEND lettering, Pat. Pend. |
| Inlet Connection |
Tapered with six wrench flats |
| Design Type |
Retro-fit, integrated stem & cartridge |
| O-Rings |
2 |
| End Tabs |
None |
🔁 Cross Reference Table
| Sillcock Model | Cartridge / Stem Assembly | Identification Details |
|---|
| T-550 (Original / Retrofit) |
108-906AR |
Silver/Black ID Disc • Pat. Pend. • Tapered inlet with six wrench flats |
| T-550A (Improved Flow) |
108-906A |
Black/Silver ID Disc • Pat. 5.392.805 D527.797 • Straight inlet with round knurled pad |
🔍 Step-by-Step Identification Guide
Step 1: Check the Handle Identification Disc
| Feature | T-550 (108-906AR) | T-550A (108-906A) |
|---|
| 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 | T-550 (108-906AR) | T-550A (108-906A) |
|---|
| Handle Inlet |
Tapered, six wrench flats |
Straight, round knurled pad |
Step 3: Measure the Cartridge
| Model | Without Handle | With Handle |
|---|
| 108-906AR (T-550) |
9-5/8" |
10-1/2" |
| 108-906A (T-550A) |
9-3/4" |
10-1/2" |
🧭 Combine handle disc, inlet style, and cartridge length for definitive ID.
🧩 Quick Reference Comparison
| Feature | T-550 (Original / Retrofit) | T-550A (Improved Flow) |
|---|
| Cartridge Part No. |
108-906AR |
108-906A |
| Handle Disc |
Silver / Black Lettering |
Black / Silver Lettering |
| Patent Marking |
Pat. Pend. |
Pat. 5.392.805 D527.797 |
| Handle Inlet |
Tapered, six wrench flats |
Straight, round knurled pad |
| Seal Design |
2 O-rings, no tabs |
1 O-ring + 2 tabs |
| Stem Design |
Integrated stem and cartridge |
Two-piece assembly |
| Flow Type |
Original Flow / Retrofit |
Improved Flow |
⚠️ Final Check Before Ordering
✅ Order 108-906AR if:
-
Handle disc is silver with black LEGEND lettering
-
Inlet connection is tapered with six wrench flats
-
Cartridge measures 9-5/8" (without handle) / 10-1/2" (with handle)
✅ Order 108-906A if:
-
Handle disc is black with silver LEGEND lettering
-
Inlet connection is straight with round knurled pad
-
Cartridge measures 9-3/4" (without handle) / 10-1/2" (with handle)
🔧 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 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: What sillcock does the Legend 108-906AR fit?
A: Designed for Original 6” T-550 Frost-Free sillcocks.
Q: How do I know if I need 108-906AR or 108-906A?
A: 108-906AR has two O-rings and no tabs. 108-906A has one O-ring and two tabs.
Q: Can I install this myself?
A: Yes — the cartridge is designed for easy DIY replacement with standard tools.
