Your search for "Fleck 2510 Service Kits" revealed the following:

Fleck 7000 Powerhead, SXT Meter
Fleck 7000 powerhead with SXT timer set up for meter / single backwash / brine fill last / softener operation with meter cable, transformer, and...
3200 Timer Assembly, 9000/9100 Series

Complete 3200 timer for 9000/9100 series valves using 120v mechanical meter configurations. The program wheel conforms to 3/4" meter systems with a range of 0-2,100...

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Parts & Accessories
Bypass Assembly, w/Clips, 7000 Series - 40569-01
$100.00
Bypass Assembly, w/Clips, 7000 Series
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Availability: Out of Stock
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Parts & Accessories
Fleck Drive Motor, 120v, 9000/9100/9500 Series - 18738 (Same as 61633-01, 14927)
$164.00
Fleck Drive Motor, 120v, 9000/9100/9500 Series
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Availability: Out of Stock
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Transformer, 24V US, 7000 Series (now 44148) - 40981
$59.00
Replaces existing 40981 transformer on all 7000 SE and 7000 SXT valves. New Part Number is 44148.
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Availability: Out of Stock