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  2. Auto Parts
  3. Engine Components
  4. Cylinder Block Components
  5. Engine Piston
  6. ACDelco 12646457

ACDelco 12646457 Engine Piston

ACDelco 12646457 Engine Piston Image 1
ACDelco 12646457 Engine Piston Image 2
ACDelco 12646457 Engine Piston

ACDelco
Brand:ACDelco
Part Number: 12646457
UPC: 195491147225
Weight: 0.67 lbs
Condition:New



On Sale:

$77.51

Availability:
12 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

Get the ACDelco 12646457 Engine Piston for your vehicle. Buy now and secure your purchase online!

GM Genuine Parts Engine Pistons are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Specifications:

Assembly Lubricant Included:
No
Bore Diameter (in):
3.4646 in
Bore Diameter (mm):
88 mm
Grade Type:
Standard
Oversized:
No
Piston Head Type:
Flat
Piston Material:
Aluminum
Piston Outside Diameter:
3.4283 in.
Piston Outside Diameter:
87.08 mm
Piston Pin Incorporated Bearings:
No
Piston Pin Inside Diameter:
0.4528 in.
Piston Pin Inside Diameter:
11.5 mm
Piston Pin Length:
2.1591 in.
Piston Pin Length:
54.84 mm
Piston Pin Material:
Steel
Piston Pin Outside Diameter:
0.8031 in.
Piston Pin Outside Diameter:
20.4 mm
Piston Rings Included:
No
Programming Required:
No
Ring Material:
Steel
Country of Origin:
MX

Select a vehicle to narrow ACDelco 12646457 Engine Piston fitment info!

Last Updated: 05/30/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

2016

 

2015

 

2014

 

2013

 

2012

 

2016

 

2015

 

2014

 

2013

 

2012

 
Buick LaCrosse

2.4L L4 MILD HYBRID EV-Gas MHEV DOHC
4
 
Eng: LUK
8th VIN Digit: R
 

Buick LaCrosse



2.4L L4 MILD HYBRID EV-Gas MHEV DOHC Eng: LUK
8th VIN Digit: R

4 Per Vehicle

2011

 

2011

 
Buick LaCrosse

2.4L L4 Gas DOHC
4
 
Eng: LAF
8th VIN Digit: C
 

Buick LaCrosse



2.4L L4 Gas DOHC Eng: LAF
8th VIN Digit: C

4 Per Vehicle

2010

 

2010

 
Buick LaCrosse

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: C
 

Buick LaCrosse



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: C

4 Per Vehicle

2017

 

2016

 

2017

 

2016

 
Buick Regal

2.4L L4 Gas DOHC
4
 
Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40
 

Buick Regal



2.4L L4 Gas DOHC Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40

4 Per Vehicle

2017

 

2016

 

2015

 

2017

 

2016

 

2015

 
Buick Regal

2.4L L4 Flex DOHC
4
 
Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40
 

Buick Regal



2.4L L4 Flex DOHC Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40

4 Per Vehicle

2016

 

2015

 

2014

 

2013

 

2012

 

2016

 

2015

 

2014

 

2013

 

2012

 
Buick Regal

2.4L L4 MILD HYBRID EV-Gas MHEV DOHC
4
 
Eng: LUK
8th VIN Digit: R
 

Buick Regal



2.4L L4 MILD HYBRID EV-Gas MHEV DOHC Eng: LUK
8th VIN Digit: R

4 Per Vehicle

2012

 

2012

 
Buick Regal

2.4L L4 Flex DOHC
4
 
Eng: LEA
8th VIN Digit: K
 

Buick Regal



2.4L L4 Flex DOHC Eng: LEA
8th VIN Digit: K

4 Per Vehicle

2011

 

2011

 
Buick Regal

2.4L L4 Gas DOHC
4
 
Eng: LAF
8th VIN Digit: C
 

Buick Regal



2.4L L4 Gas DOHC Eng: LAF
8th VIN Digit: C

4 Per Vehicle

2017

 

2017

 
Buick Verano

2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC
4
 		 

Buick Verano



2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC
4 Per Vehicle

2016

 

2016

 
Buick Verano

2.4L L4 Gas DOHC
4
 
Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40
 

Buick Verano



2.4L L4 Gas DOHC Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40

4 Per Vehicle

2016

 

2015

 

2014

 

2013

 

2016

 

2015

 

2014

 

2013

 
Buick Verano

2.4L L4 Flex DOHC
4
 
Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40
 

Buick Verano



2.4L L4 Flex DOHC Eng: LEA
8th VIN Digit: K
Mfr Code: 6T40

4 Per Vehicle

2012

 

2012

 
Buick Verano

2.4L L4 Flex DOHC
4
 		 

Buick Verano



2.4L L4 Flex DOHC
4 Per Vehicle

2015

 

2014

 

2013

 

2015

 

2014

 

2013

 
Chevrolet Captiva Sport

2.4L L4 Flex DOHC
4
 		 

Chevrolet Captiva Sport



2.4L L4 Flex DOHC
4 Per Vehicle

2012

 

2012

 
Chevrolet Captiva Sport

2.4L L4 Flex DOHC
4
 
Eng: LEA
8th VIN Digit: K
 

Chevrolet Captiva Sport



2.4L L4 Flex DOHC Eng: LEA
8th VIN Digit: K

4 Per Vehicle

2008

 

2007

 

2006

 

2008

 

2007

 

2006

 
Chevrolet Cobalt

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Chevrolet Cobalt



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 
Chevrolet Equinox

2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC
4
 
Eng: LEA
8th VIN Digit: K
 

Chevrolet Equinox



2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC Eng: LEA
8th VIN Digit: K

4 Per Vehicle

2011

 

2011

 
Chevrolet Equinox

2.4L L4 Gas DOHC
4
 
Eng: LAF
8th VIN Digit: C
 

Chevrolet Equinox



2.4L L4 Gas DOHC Eng: LAF
8th VIN Digit: C

4 Per Vehicle

2010

 

2010

 
Chevrolet Equinox

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: W
 

Chevrolet Equinox



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: W

4 Per Vehicle

2011

 

2011

 
Chevrolet HHR

2.4L L4 Flex DOHC
4
 
Eng: LE9
8th VIN Digit: U
 

Chevrolet HHR



2.4L L4 Flex DOHC Eng: LE9
8th VIN Digit: U

4 Per Vehicle

2010

 

2009

 

2010

 

2009

 
Chevrolet HHR

2.4L L4 Flex DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: V
 

Chevrolet HHR



2.4L L4 Flex DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: V

4 Per Vehicle

2008

 

2007

 

2006

 

2008

 

2007

 

2006

 
Chevrolet HHR

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P
 

Chevrolet HHR



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P

4 Per Vehicle

2014

 

2014

 
Chevrolet Impala

2.4L L4 MILD HYBRID EV-Gas MHEV DOHC
4
 
Eng: LUK
8th VIN Digit: R
 

Chevrolet Impala



2.4L L4 MILD HYBRID EV-Gas MHEV DOHC Eng: LUK
8th VIN Digit: R

4 Per Vehicle

2014

 

2013

 

2014

 

2013

 
Chevrolet Malibu

2.4L L4 MILD HYBRID EV-Gas MHEV DOHC
4
 
Eng: LUK
8th VIN Digit: R
 

Chevrolet Malibu



2.4L L4 MILD HYBRID EV-Gas MHEV DOHC Eng: LUK
8th VIN Digit: R

4 Per Vehicle

2012

 

2012

 
Chevrolet Malibu

2.4L L4 Gas DOHC
4
 
Eng: LE5
8th VIN Digit: 0
Mfr Code: 6T40
 

Chevrolet Malibu



2.4L L4 Gas DOHC Eng: LE5
8th VIN Digit: 0
Mfr Code: 6T40

4 Per Vehicle

2012

 

2011

 

2012

 

2011

 
Chevrolet Malibu

2.4L L4 Flex DOHC
4
 
Eng: LE9
8th VIN Digit: U
Mfr Code: 6T40
 

Chevrolet Malibu



2.4L L4 Flex DOHC Eng: LE9
8th VIN Digit: U
Mfr Code: 6T40

4 Per Vehicle

2011

 

2011

 
Chevrolet Malibu

2.4L L4 Gas DOHC
4
 
Eng: LE5
8th VIN Digit: 1
Mfr Code: 6T40
 

Chevrolet Malibu



2.4L L4 Gas DOHC Eng: LE5
8th VIN Digit: 1
Mfr Code: 6T40

4 Per Vehicle

2010

 

2010

 
Chevrolet Malibu

2.4L L4 Flex DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: 0
 

Chevrolet Malibu



2.4L L4 Flex DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: 0

4 Per Vehicle

2010

 

2010

 
Chevrolet Malibu

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z
 

Chevrolet Malibu



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z

4 Per Vehicle

2010

 

2009

 

2010

 

2009

 
Chevrolet Malibu

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Chevrolet Malibu



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2009

 

2009

 
Chevrolet Malibu

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5
 

Chevrolet Malibu



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5

4 Per Vehicle

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 
GMC Terrain

2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC
4
 
Eng: LEA
8th VIN Digit: K
 

GMC Terrain



2.4L L4 Flex DOHC,
2.4L L4 Gas DOHC Eng: LEA
8th VIN Digit: K

4 Per Vehicle

2011

 

2011

 
GMC Terrain

2.4L L4 Gas DOHC
4
 
Eng: LAF
8th VIN Digit: C
 

GMC Terrain



2.4L L4 Gas DOHC Eng: LAF
8th VIN Digit: C

4 Per Vehicle

2010

 

2010

 
GMC Terrain

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: W
 

GMC Terrain



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LAF
8th VIN Digit: W

4 Per Vehicle

2007

 

2007

 
Pontiac G5

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Pontiac G5



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2010

 

2010

 
Pontiac G6

2.4L L4 Flex DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: 0
 

Pontiac G6



2.4L L4 Flex DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
Eng: LE9
8th VIN Digit: 0

4 Per Vehicle

2010

 

2009

 

2010

 

2009

 
Pontiac G6

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Pontiac G6



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2007

 

2006

 

2007

 

2006

 
Pontiac G6

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Pontiac G6



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2009

 

2009

 
Pontiac Solstice

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Pontiac Solstice



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2007

 

2007

 
Pontiac Solstice

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)(FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Pontiac Solstice



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)(FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2006

 

2006

 
Pontiac Solstice

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)(FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
 

Pontiac Solstice



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)(FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4

4 Per Vehicle

2009

 

2009

 
Saturn Aura

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5
 

Saturn Aura



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5

4 Per Vehicle

2009

 

2009

 
Saturn Aura

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Saturn Aura



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2007

 

2007

 
Saturn Aura

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5
 

Saturn Aura



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 5

4 Per Vehicle

2007

 

2006

 

2007

 

2006

 
Saturn Ion

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Saturn Ion



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2010

 

2009

 

2010

 

2009

 
Saturn Sky

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Saturn Sky



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2007

 

2007

 
Saturn Sky

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B
 

Saturn Sky



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12659419)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: B

4 Per Vehicle

2010

 

2010

 
Saturn Vue

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 1
 

Saturn Vue



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: 1

4 Per Vehicle

2009

 

2009

 
Saturn Vue

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z
 

Saturn Vue



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z

4 Per Vehicle

2009

 

2009

 
Saturn Vue

2.4L L4 Gas DOHC
4
 
FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P
 

Saturn Vue



2.4L L4 Gas DOHC FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P

4 Per Vehicle

2008

 

2008

 
Saturn Vue

2.4L L4 Gas DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P
 

Saturn Vue



2.4L L4 Gas DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: P

4 Per Vehicle

2008

 

2007

 

2008

 

2007

 
Saturn Vue

2.4L L4 FULL HYBRID EV-Gas FHEV DOHC
4
 
TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z
 

Saturn Vue



2.4L L4 FULL HYBRID EV-Gas FHEV DOHC TO SERVICE MY 2008 AND OLDER, MUST REPLACE WITH RING KIT 12631103)( FOR USE IN 2010 AND OLDER, REPLACE IN SET OF 4
8th VIN Digit: Z

4 Per Vehicle