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Sayco 06550 Replacement Diverter Stem for 308 and T-308 Valves

Middle-handle diverter stem for Sayco 308 and T-308 three-handle tub and shower valves. 4-11/16 in. brass, 16-point broach, barrel seal fitted.

FourHome 4H2615953 · UPC 850054895240 · ASIN B0GYG2D66H
Sayco 06550 replacement diverter stem, brass with splined top, hex nut and black O-rings, front view
Sayco 06550 replacement diverter stem, brass with splined top, hex nut and black O-rings, front viewSayco 06550 diverter stem features: solid brass, high-temperature resistant, high-elasticity ring, leak prevention, flow redirect and barrel seal, with cross-reference part numbersSayco 06550 diverter stem dimensions and compatibility for Sayco 308 and T-308 three-handle tub and shower valves, with broach size and ID lengthSayco shower stem identification: P002 left handle hot, 06550 middle handle diverter and P004 right handle cold, side by sideSayco 308 and T-308 three-handle valve layout showing P002 hot, 06550 diverter and P004 cold stem positionsSayco 06550 diverter stem shown with hotel, school and hospital, apartment and home bathroom uses
$17.98
Amazon price as of 2026-09-23. Current price is on Amazon.
Buy on AmazonBuying 10 or more? Volume pricing
In stock on Amazon, ships Prime
ReplacesSayco 06550
ValvesSayco 308 and T-308 three-handle
Length4-11/16 in. overall
Broach16-point
SealBarrel seal fitted at the factory

Replaces these part numbers

OEM part numbersAftermarket equivalents
Sayco 06550BrassCraft ST2684

Will it fit?

Fits

  • Sayco 308 three-handle tub and shower valves, center position
  • Sayco T-308 three-handle tub and shower valves, center position

Not compatible with

  • The hot stem (Sayco P002) or cold stem (Sayco P004)
  • The shorter 4-1/16 in. Sayco K-1 diverter stem (Everbilt 86011)
  • Two-handle Sayco faucets
  • Pressure-balance valves and single-handle cartridges

Is this your part?

Pull the middle handle. The diverter stem is brass, about 4-11/16 in. long, with a 16-point splined tip and a sealing barrel at the bottom instead of a flat bibb washer. Measure from the broach tip to the barrel end and count the splines.

When to replace it

Water comes out of the tub spout and the showerhead at the same time, the spout keeps dripping while the shower runs, water seeps around the middle handle, or the diverter handle has gone stiff and grinding.

Specifications

FourHome part4H2615953
UPC850054895240
Overall length4-11/16 in.
Broach16-point
MaterialBrass
SealBarrel seal, factory fitted
Pieces1 diverter stem

What is in the box

How to install it

Time: 15 to 20 minutes. Tools: Deep stem socket or stem wrench, Adjustable wrench, Flathead screwdriver.

  1. Shut off the water.
  2. Bleed the pressure through the tub spout. The barrel sprays back the moment it clears the valve body if you skip this.
  3. Remove the middle handle and escutcheon.
  4. Back the old stem out with a deep stem socket or stem wrench.
  5. Check the cross-tee bore the barrel rides in. A worn bore can keep diversion from working after a stem swap.
  6. Thread the new stem in, refit the handle and test the shower.

Questions

Is this the hot or cold stem?

No. It is the middle diverter only. The hot side takes Sayco P002 and the cold side takes Sayco P004.

Does it fit the Sayco K-1 valve?

No. The K-1 diverter is shorter, 4-1/16 in.

Is the seal included?

Yes. The barrel seal is fitted to the stem at the factory.

Diversion still fails after the new stem. Why?

Look at the brass cross-tee bore inside the valve. If it is worn, the barrel cannot seal against it.

Related parts

Sayco P004 replacement cold stemReplacement for Sayco P004 Cold StemSayco P002 replacement hot stemReplacement for Sayco 308 Hot Stem P002Ten brass bibb seats for Sayco faucets arranged in a pyramidReplacement for Sayco Bibb Seats, 10 Pack

Repair guides

FourHome is not affiliated with or endorsed by any faucet manufacturer. Brand names and part numbers are used only to identify compatibility.