How to replace the piston, connecting rod, and bearing in an engine on GMC Terrain?

Handling the Piston replacement alongside connecting rod and bearing requires the withdrawal of both Oil Pan and Cylinder Head. The j 24270 must remove the ring ridge while the Piston stays at its bottom position wrapped in cloth. After moving the Crankshaft to position the Piston at the top stroke you must remove the cloth debris and note the connecting rods and caps for correct assembly. The technician extracts the connecting rod and Piston from the engine block by using the j-43966-1 after discarding the bolts and nuts and removing the connecting rod nuts and cap. Hot water mixed with detergent should clean the cylinder holes followed by engine oil application and a dry clean cloth to wipe them down. Before assembly place engine oil on the Piston as well as the Piston rings and cylinder bore and bearing surfaces. Finalize the assembly by using the j-43966-1 to place the Piston into its original bore while gently tapping the upper area with a wooden hammer handle. First position the stamped mark on the Piston to face the engine front while using the j 8037 to apply pressure on the engine block for complete Piston Ring cylinder entry. Then install connecting rod caps onto their respective rods with previously marked number alignment. New connecting rod bolts require installation followed by equal bolt torque of 25 nm (18 lb ft) on the first stage while the j 45059 tool adds 100 degrees of additional torque for the final stage. The side clearance measurement of the connecting rod should be done using a feeler gauge and must fall between 0.070-0.370 millimeters (0.0027-0.0145 inches). To complete the procedure you should put both the Cylinder Head and Oil Pan in position.

OEM GMC Terrain Piston

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GMC Terrain Piston Rings
Part Number: 12686358
$32.91 MSRP: $51.53
You Save: $18.62 (37%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Piston Assembly- (W/ Pinion & Compression & Oil Ring) (Left-Hand); Piston; Piston, Engine Piston
- Replaces: 12624949
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2013-2017 GMC Terrain | Denali, SLE, SLT | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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GMC Terrain Piston
Part Number: 12674548
$20.60 MSRP: $32.26
You Save: $11.66 (37%)
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Product Specifications
- Other Name: Piston, Engine Piston
- Replaced by: 25204266
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2022 GMC Terrain | AT4, Denali, SL, SLE, SLT | 4 Cyl 1.5 L GAS
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GMC Terrain Pistons, Green Line
Part Number: 12646457
$74.86 MSRP: $117.26
You Save: $42.40 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Piston Kit, Engine Piston; Piston
- Replaces: 12608531, 12631102, 19180835, 89018112
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | Denali, SL, SLE, SLT | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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GMC Terrain Piston
Part Number: 12631196
$37.46 MSRP: $58.67
You Save: $21.21 (37%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Piston, (W/Pinion); Piston, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2012 GMC Terrain | SLE, SLT | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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GMC Terrain Piston
Part Number: 12631195
$37.46 MSRP: $58.67
You Save: $21.21 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, (W/Pinion); Piston, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2012 GMC Terrain | SLE, SLT | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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GMC Terrain Piston
Part Number: 55598380
$100.55 MSRP: $157.46
You Save: $56.91 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 GMC Terrain | SLE, SLT | 4 Cyl 1.6 L DIESEL
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GMC Terrain Piston
Part Number: 55598378
$48.31 MSRP: $75.64
You Save: $27.33 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Piston, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 GMC Terrain | SLE, SLT | 4 Cyl 1.6 L DIESEL
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GMC Terrain Piston
Part Number: 12709528
$25.01 MSRP: $39.17
You Save: $14.16 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Terrain | AT4, Denali, SLE, SLT | 4 Cyl 1.5 L GAS
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GMC Terrain Piston Rings
Part Number: 12686359
$32.91 MSRP: $51.53
You Save: $18.62 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Assembly- (W/ Pinion & Compression & Oil Ring) (Right-Hand); Piston; Piston, Engine Piston
- Replaces: 12624950
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2013-2017 GMC Terrain | Denali, SLE, SLT | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
View related parts
GMC Terrain Piston
Part Number: 12652809
$18.47 MSRP: $28.94
You Save: $10.47 (37%)
Product Specifications
- Other Name: Piston Kit, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 GMC Terrain | Denali, SLE, SLT | 4 Cyl 2.0 L GAS

GMC Terrain Piston

Our website offers an extensive catalog of genuine GMC Terrain Piston at unbeatable prices. Every OEM GMC Terrain Piston comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

GMC Terrain Piston Parts Questions & Experts Answers

Piston
12631196
Q: How to replace the piston, connecting rod, and bearing in an engine on GMC Terrain?
A: Handling the Piston replacement alongside connecting rod and bearing requires the withdrawal of both Oil Pan and Cylinder Head. The j 24270 must remove the ring ridge while the Piston stays at its bottom position wrapped in cloth. After moving the Crankshaft to position the Piston at the top stroke you must remove the cloth debris and note the connecting rods and caps for correct assembly. The technician extracts the connecting rod and Piston from the engine block by using the j-43966-1 after discarding the bolts and nuts and removing the connecting rod nuts and cap. Hot water mixed with detergent should clean the cylinder holes followed by engine oil application and a dry clean cloth to wipe them down. Before assembly place engine oil on the Piston as well as the Piston rings and cylinder bore and bearing surfaces. Finalize the assembly by using the j-43966-1 to place the Piston into its original bore while gently tapping the upper area with a wooden hammer handle. First position the stamped mark on the Piston to face the engine front while using the j 8037 to apply pressure on the engine block for complete Piston Ring cylinder entry. Then install connecting rod caps onto their respective rods with previously marked number alignment. New connecting rod bolts require installation followed by equal bolt torque of 25 nm (18 lb ft) on the first stage while the j 45059 tool adds 100 degrees of additional torque for the final stage. The side clearance measurement of the connecting rod should be done using a feeler gauge and must fall between 0.070-0.370 millimeters (0.0027-0.0145 inches). To complete the procedure you should put both the Cylinder Head and Oil Pan in position.

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