How to replace the piston and rod bearing in an engine on Buick Century?

The replacement process for the piston starts with removing the cylinder heads at first. Use the cylinder bore ridge reamer (J24270) on top of the piston that rests at the bottom of its stroke while covered by a cloth. Once the piston reaches the top of its stroke turn the Crankshaft then remove the cloth along with cutting debris before raising the vehicle for support and removing the Oil Pan and Oil Pump and Crankshaft oil deflector. The service technician should turn the Crankshaft to bottom dead center position while applying matchmarks on connecting rod components before removal. You should first remove the connecting rod nuts then remove the connecting rod cap together with the lower connecting rod bearing but you need to protect the Crankshaft journal with a thread protector. The installing rod guide (J5239) allows you to advance the piston along with rod into the cylinder before lowering the vehicle. Extraction of the engine block top components including connecting rod, upper connecting rod bearing, and piston will be followed by wiping oil from the connecting rod bearings and Crankshaft journal and performing inspections on the connecting rod bearings, cap, and Crankshaft journal. Apply engine oil to clean cylinder bores after cleaning with a light honing process followed by hot water with detergent then dry out the surface with a new clean cloth. The procedure begins with applying new engine oil to both the piston along with the piston rings and cylinder bore and bearing surfaces before installing the j5239 tool for ring compression with the Piston Ring compressor j8037. After mounting the piston and connecting rod assembly check that the piston stamped arrow faces forward before dropping the piston into its original cylinder using j5239 and j8037 while giving a light tap on the piston top. Support the vehicle again while placing the upper connecting rod bearing into the rod followed by engine oil application and slow piston and rod descent using the j5239 tool. Insert the lower connecting rod bearing into the connecting rod cap before applying fresh engine oil onto it. Then install the connecting rod cap. Use the electronic torque angle meter (J36660-A) to perform extra 75-degree rotations on connecting rod nuts which have been tightened to 20 nm (15 ft. Lbs.). Open the connecting rod for inspection then measure its internal clearance. To finish the operation install the Crankshaft oil deflector and Oil Pump and Oil Pan followed by lowering the vehicle then mounting the cylinder heads.

OEM Buick Piston

Engine Pistons

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

69 Pistons found

View related parts
Buick Piston
Part Number: 12669767
$32.35 MSRP: $53.31
You Save: $20.96 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Kit, Engine Piston
Fits the following Buick Models:
- Encore | 2016-2018 | Essence, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
View related parts
Buick Piston Rings
Part Number: 12686358
$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) (Left-Hand); Piston; Piston, Engine Piston
- Replaces: 12624949
Fits the following Buick Models:
- Enclave | 2018-2021 | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2014-2016 | Base, Leather, Premium, Sport Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 12616971
$66.53 MSRP: $104.18
You Save: $37.65 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, (W/Pinion); Piston, Engine Piston
Fits the following Buick Models:
- Enclave | 2009-2017 | Base, Convenience, CX, CXL, Leather, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2010-2011 | CX, CXL, CXS | 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 12674055
$39.64 MSRP: $62.08
You Save: $22.44 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Kit, Engine Piston
Fits the following Buick Models:
- LaCrosse | 2017-2019 | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
- Regal Sportback | 2018-2020 | GS | 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 12674056
$34.05 MSRP: $56.09
You Save: $22.04 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Kit, Engine Piston
Fits the following Buick Models:
- LaCrosse | 2017-2019 | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
- Regal Sportback | 2018-2020 | GS | 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 12590866
$25.16 MSRP: $39.41
You Save: $14.25 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, (W/Pinion); Piston, Engine Piston
- Replaces: 92068320
Fits the following Buick Models:
- Enclave | 2008 | CX, CXL | 6 Cyl 3.6 L GAS
- LaCrosse | 2005-2008 | CXS | 6 Cyl 3.6 L GAS
- Rendezvous | 2004-2006 | CX, CXL, CXL Plus, Ultra | 6 Cyl 3.6 L GAS
View More
View related parts
Buick Piston
Part Number: 12616972
$43.54 MSRP: $104.95
You Save: $61.41 (59%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, (W/Pinion); Piston, Engine Piston
Fits the following Buick Models:
- Enclave | 2009-2017 | Base, Convenience, CX, CXL, Leather, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2010-2011 | CX, CXL, CXS | 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 12710889
$38.83 MSRP: $60.82
You Save: $21.99 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Kit, .; Piston Kit, Engine; Piston, Engine
Fits the following Buick Models:
- Encore GX | 2020-2023 | Essence, Preferred, Select | 3 Cyl 1.2 L GAS
View related parts
Buick Piston Assembly
Part Number: 10159436
$139.16 MSRP: $218.95
You Save: $79.79 (37%)
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston; Piston
- Replaced by: 19434034
Fits the following Buick Models:
- Roadmaster | 1992-1996 | Base, Collector's Edition, Estate Wagon, Estate Wagon Collector's Edition, Limited, Limited Collector's Edition | 8 Cyl 5.7 L GAS
View related parts
Buick Piston
Part Number: 12663172
$19.64 MSRP: $30.77
You Save: $11.13 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine
- Replaces: 12698557
Fits the following Buick Models:
- Encore GX | 2020-2023 | Essence, Preferred, Select | 3 Cyl 1.3 L GAS
View related parts
Buick Pistons
Part Number: 89018108
$93.13 MSRP: $145.91
You Save: $52.78 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Assembly, (W/Pinion); Piston; Piston, Engine Piston
Fits the following Buick Models:
- Regal | 2011-2013 | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
- Verano | 2013-2016 | Premium, Turbo | 4 Cyl 2.0 L GAS
View related parts
Buick Pistons
Part Number: 12539085
$104.54 MSRP: $163.76
You Save: $59.22 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, (W/Pinion); Piston; Piston, Engine Piston
Fits the following Buick Models:
- LeSabre | 1996-1999 | Custom, Limited | 6 Cyl 3.8 L GAS
- Park Avenue | 1996-2005 | Base, Ultra | 6 Cyl 3.8 L GAS
- Regal | 1997-2004 | 25th Anniversary Edition, GS, GSE | 6 Cyl 3.8 L GAS
- Riviera | 1996-1999 | Base | 6 Cyl 3.8 L GAS
View More
View related parts
Buick Piston
Part Number: 25195028
$229.98 MSRP: $361.69
You Save: $131.71 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston
- Replaces: 55580186, 55577097, 55565426
Fits the following Buick Models:
- Encore | 2013-2020 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
View related parts
Buick Piston
Part Number: 55581706
$53.08 MSRP: $83.15
You Save: $30.07 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston
Fits the following Buick Models:
- Cascada | 2016-2019 | Base, Premium, Sport Touring | 4 Cyl 1.6 L GAS
View related parts
Buick 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
Fits the following Buick Models:
- Enclave | 2018-2021 | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2014-2016 | Base, Leather, Premium, Sport Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
View related parts
Buick Piston
Part Number: 55488406
$44.33 MSRP: $69.41
You Save: $25.08 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston, Engine Piston
- Replaces: 55511513
Fits the following Buick Models:
- Envision | 2021 | Avenir, Essence, Preferred | 4 Cyl 2.0 L GAS
View related parts
Buick Piston
Part Number: 89017429
$65.71 MSRP: $102.93
You Save: $37.22 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Assembly, (W/Pinion) (Standard); Piston, Engine Piston
Fits the following Buick Models:
- Lucerne | 2006-2011 | CXL, CXS, Super | 8 Cyl 4.6 L GAS
View related parts
Buick Piston
Part Number: 12652809
$18.47 MSRP: $28.94
You Save: $10.47 (37%)
Product Specifications
- Other Name: Piston Kit, Engine Piston
Fits the following Buick Models:
- Envision | 2016-2020 | Premium, Premium II | 4 Cyl 2.0 L GAS
- Regal | 2014-2016 | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
- Regal Sportback | 2018-2020 | Avenir, Base, Essence, Preferred, Preferred II | 4 Cyl 2.0 L GAS
- Regal TourX | 2018-2020 | Base, Essence, Preferred | 4 Cyl 2.0 L GAS
View More
View related parts
Buick Piston
Part Number: 22527481
Product Specifications
- Other Name: Piston, Engine Piston
Fits the following Buick Models:
- Electra | 1989, 1985-1987 | Estate Wagon | 8 Cyl 5.0 L GAS
- LeSabre | 1985-1990 | Collector's Edition, Custom, Estate Wagon, Limited | 8 Cyl 5.0 L GAS
- Regal | 1986-1987 | Base, Limited | 8 Cyl 5.0 L GAS
View More
View related parts
Buick Pistons
Part Number: 10112444
Product Specifications
- Other Name: Piston; Piston, Engine Piston
Fits the following Buick Models:
- Century | 1990-1992 | Custom, Limited, Special | 4 Cyl 2.5 L GAS
- Skylark | 1990-1991 | Base, Custom, Gran Sport, Luxury Edition | 4 Cyl 2.5 L GAS

| Page 1 of 4 |Next >

1-20 of 69 Results

Buick Piston Parts Questions & Experts Answers

Piston
12564008
Q: How to replace the piston and rod bearing in an engine on Buick Century?
A: The replacement process for the piston starts with removing the cylinder heads at first. Use the cylinder bore ridge reamer (J24270) on top of the piston that rests at the bottom of its stroke while covered by a cloth. Once the piston reaches the top of its stroke turn the Crankshaft then remove the cloth along with cutting debris before raising the vehicle for support and removing the Oil Pan and Oil Pump and Crankshaft oil deflector. The service technician should turn the Crankshaft to bottom dead center position while applying matchmarks on connecting rod components before removal. You should first remove the connecting rod nuts then remove the connecting rod cap together with the lower connecting rod bearing but you need to protect the Crankshaft journal with a thread protector. The installing rod guide (J5239) allows you to advance the piston along with rod into the cylinder before lowering the vehicle. Extraction of the engine block top components including connecting rod, upper connecting rod bearing, and piston will be followed by wiping oil from the connecting rod bearings and Crankshaft journal and performing inspections on the connecting rod bearings, cap, and Crankshaft journal. Apply engine oil to clean cylinder bores after cleaning with a light honing process followed by hot water with detergent then dry out the surface with a new clean cloth. The procedure begins with applying new engine oil to both the piston along with the piston rings and cylinder bore and bearing surfaces before installing the j5239 tool for ring compression with the Piston Ring compressor j8037. After mounting the piston and connecting rod assembly check that the piston stamped arrow faces forward before dropping the piston into its original cylinder using j5239 and j8037 while giving a light tap on the piston top. Support the vehicle again while placing the upper connecting rod bearing into the rod followed by engine oil application and slow piston and rod descent using the j5239 tool. Insert the lower connecting rod bearing into the connecting rod cap before applying fresh engine oil onto it. Then install the connecting rod cap. Use the electronic torque angle meter (J36660-A) to perform extra 75-degree rotations on connecting rod nuts which have been tightened to 20 nm (15 ft. Lbs.). Open the connecting rod for inspection then measure its internal clearance. To finish the operation install the Crankshaft oil deflector and Oil Pump and Oil Pan followed by lowering the vehicle then mounting the cylinder heads.