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Piston and Piston Kits For Automatic Transmissions

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Piston Kit AW80-40LE AW80-40LS AW81-40LE U440E, U441E
$245.06 - $245.06
$245.06
$245.06 - $245.06
$245.06

Piston Kit AW80-40LE AW80-40LS AW81-40LE U440E U441E

Only 1 left!

Piston Kit AW80-40LE AW80-40LS AW81-40LE U440E, U441E Transmissions: U441E (AW81-40LE,AW80-40LE,U440E) 1999-2008 Vehicle BUICKEXCELLE/EXCELLE HRV ...

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$245.06 - $245.06
$245.06
$245.06 - $245.06
$245.06
$226.66 - $226.66
$226.66
$226.66 - $226.66
$226.66

Piston Kit 1st Gen 6T40 2008/12

Only 1 left!

Piston Kit 1st Gen 6T40 2008/12  Contains 5 Pistons.Transmissions: 6T40 (6T40E,X23F) 2008-2012 Vehicle BUICKALPHEON 2012 6 SP FWD L4 2.4LENCORE 20...

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$226.66 - $226.66
$226.66
$226.66 - $226.66
$226.66
Piston Kit Gen 2 Transtec 6T35 6T40 6T45 2012/UP Sold Out
$219.91 - $219.91
$219.91
$219.91 - $219.91
$219.91

Piston Kit Gen 2 Transtec 6T35 6T40 6T45 2012/UP

Out of stock

Piston Kit Gen 2 Transtec 6T35 6T40 6T45 2012/UP Transmissions: 6T45 (6T45E,MH7) 2012-UP, 6T40 (6T40E,X23F) 2012-UP, 6T35 2012-UP Vehicle BUICKALP...

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$219.91 - $219.91
$219.91
$219.91 - $219.91
$219.91
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Piston Kit Transtec 3ra Gen GMC 2014/UP 6T40 6T45
$215.86 - $215.86
$215.86
$215.86 - $215.86
$215.86

Piston Kit Transtec 3rd GEN GMC 2014/UP 6T40 6T45

Only 1 left!

Piston Kit Transtec 3ra Gen GMC 2014/UP 6T40 6T45 Transmissions: 6T40 (6T40E,X23F) 2014-UP Vehicle BUICKALPHEON 2014-2015 6 SP FWD L4 2.4LCASCADA ...

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$215.86 - $215.86
$215.86
$215.86 - $215.86
$215.86
$203.75 - $203.75
$203.75
$203.75 - $203.75
$203.75

Piston Kit (3) U880E U880F U881E U881F AWF8F35 TG-80SC AWF8F45 AF50-8 TG-81SC

in stock

Piston Kit (3) U880E U880F U881E U881F AWF8F35 TG-80SC AWF8F45 AF50-8 TG-81SC Transmissions: AWF8F45 (TG-81SC,AF50-8) 2013-UP, AWF8F35 (8F45,U881F...

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$203.75 - $203.75
$203.75
$203.75 - $203.75
$203.75
Sold Out
$161.91 - $161.91
$161.91
$161.91 - $161.91
$161.91

Piston KIT (7) 4T40E MN5 ME7 MN4 4T45E

Out of stock

Piston KIT (7) 4T40E MN5 ME7 MN4 4T45E Transmissions: 4T40E (MN5,ME7,MN4,4T45E) 1995-UP Vehicle BUICKSKYLARK 1997 4 SP FWD L4 2.4LCHEVROLETCAVALIE...

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$161.91 - $161.91
$161.91
$161.91 - $161.91
$161.91
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Piston Kit (5) 6F50 6F55 6T70 6T75 2007/12
$149.97 - $149.97
$149.97
$149.97 - $149.97
$149.97

Piston Kit 6F50 6F55 6T70 6T75 2007/12

in stock

Piston Kit 6F50 6F55 6T70 6T75 2007/12 Transmissions: 6T75 2007-2012, 6F55 2007-2012, 6F50 2007-2012, 6T70 (MH4,MH2) 2007-2012 Vehicle BUICKENCLAV...

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$149.97 - $149.97
$149.97
$149.97 - $149.97
$149.97
Piston Kit 2WD 4L40E 5L40E 5L50E MX5 M82 MV3 M22
$147.21 - $147.21
$147.21
$147.21 - $147.21
$147.21

Piston Kit 2WD 4L40E 5L40E 5L50E MX5 M82 MV3 M22

in stock

Piston Kit 2WD 4L40E 5L40E 5L50E MX5 M82 MV3 M22 Transmissions: 4L40E 1999-UP, 5L40E (MX5,M82) 1999-UP, 5L50E (MV3,M22) 1999-UP Vehicle BMW3-SERIE...

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$147.21 - $147.21
$147.21
$147.21 - $147.21
$147.21
Piston Kit (2) AW80-40LE AW80-40LS AW81-40LE U440E U441E
$52.78 - $52.78
$52.78
$52.78 - $52.78
$52.78

Piston Kit AW80-40LE AW80-40LS AW81-40LE U440E U441E

in stock

Piston Kit (2) AW80-40LE AW80-40LS AW81-40LE U440E U441E Without Reverse Piston with Forward DrumTransmissions: U441E (AW81-40LE,AW80-40LE,U440E) ...

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$52.78 - $52.78
$52.78
$52.78 - $52.78
$52.78
Transgo Piston Accumulator 1st-2nd & 2nd-3rd Upgraded 4T65E MN7 MN3 M76 1997/UP
$14.38 - $14.38
$14.38
$14.38 - $14.38
$14.38

Transgo Piston Accumulator 1st-2nd & 2nd-3rd Upgraded 4T65E 1997/UP

Only 1 left!

TransGo Upgraded Piston Accumulator for 1st-2nd and 2nd-3rd Shifts Upgrade your transmission with the TransGo Upgraded Piston Accumulator, specifi...

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$14.38 - $14.38
$14.38
$14.38 - $14.38
$14.38
$13.74 - $13.74
$13.74
$13.74 - $13.74
$13.74

Piston Kit (2) 4T65E MN7 MN3 M76

Only 1 left!

Piston Kit (2) 4T65E MN7 MN3 M76 Transmissions: 4T65E (MN7,MN3,M76) 1997-2013 Vehicle BUICKCENTURY 2000-2004 4 SP FWD V6 2.5L 3.0L 3.1LLACROSSE/AL...

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$13.74 - $13.74
$13.74
$13.74 - $13.74
$13.74
Piston Molded 2nd Clutch 4T65E MN7 MN3 M76
$7.24 - $7.24
$7.24
$7.24 - $7.24
$7.24

Piston Molded 2nd Clutch 4T65E MN7 MN3 M76

Only 1 left!

Piston Molded 2nd Clutch 4T65E MN7 MN3 M76 OD: 5 3/8” Transmissions: 4T65E (MN7,MN3,M76) 1997-UPOEM Number: 24208336 Vehicle BUICKCENTURY 2000-200...

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$7.24 - $7.24
$7.24
$7.24 - $7.24
$7.24
Discover a complete selection of piston kits and servo kits engineered for automatic transmissions. At Sun Transmissions, we stock OEM-quality transmission pistons, individual servo pistons, and complete piston rebuild kits compatible with all major transmission brands and models.
Each piston kit is precisely machined and built to meet high performance standards—helping prevent blow-by, sticking, and overheating in clutch assemblies. Designed for durability and reliability, our pistons are ideal for professional rebuilds and heavy-duty applications.
Our catalog includes accumulator pistons, servo pistons, and direct clutch pistons for a wide range of domestic and import transmissions such as 4L60E, 42RLE, 6T40, 5R110W, and more.
Enjoy fast U.S. shipping, expert technical support, and trusted quality for every automatic transmission rebuild.

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