How to Service and Repair the Oil Pump on Buick LaCrosse?

Begin by taking out the case side cover to start the Oil Pump replacement process. Disconnect solenoid valves (315A/315B/322/334/440) tfp manual valve position switch (395) and temperature sensor (391) connections using a flat-tooth tool while keeping bolt (205) that binds Oil Pump pieces intact. After unplugging all electrical connectors attach to the Oil Pump you should now remove the Oil Pump bolts (206, 207). Once freed securely pull out the Oil Pump (200) from Valve Body (300). .align the Oil Pump (200) with Valve Body (300) openings before inserting Oil Pump bolts (206, 207). Secure the m6 x 1.0 x 85 bolts (207) to 12 nm torque level and the m6 x 1.0 x 95 bolts (206) to 16 nm torque level. Rejoin electrical wires to the control valves beginning with 440 at solenoid 315a while closing with temperature probe 391 and valve position switch 395.

How to replace the oil pump in the 4T65-E automatic transmission on Buick Lucerne?

Before disassembling the Oil Pump in the 4t65-e automatic transmission, start with removing the case side cover. Then remove the Oil Pump bolts (230, 231) and Oil Pump (200) from the Valve Body (300). Inspect and clean Oil Pump, making sure it is in a good condition. To install, mount the Oil Pump (200) back on the Valve Body (300) and install the Oil Pump bolts (230, 231). Torque the nine (231) m6 x 1.0 x 85 bolts to 12 nm (106 lb in) and the two (230) m6 x 1.0 x 95 bolts to 16 nm (12 lb ft). Experts recommend resetting the transmission adaptive pressure (TAP) values through the scan tool because it will clear all learned values, whereby the Engine Control Module (ECM), powertrain control module (PCM), or transmission control module (TCM) will have to learn all tap values, and this will impact the transmission performance. Lastly, re-cover the side cover of the case.

OEM Buick Oil Pump

Oil Fluid Pump

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35 Oil Pumps found

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Buick Water Pump Part Number: 12640448
$134.98 MSRP: $235.54
You Save: $100.56 (43%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump, Oil; Oil Pump; Pump, Engine Oil Pump
- Replaces: 12590152, 12584298, 12590016
Fits the following Buick Models:
- Enclave | 2008-2024 | Avenir, Base, CX, CXL, Convenience, Essence, Leather, Preferred, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2010-2016, 2005-2008 | Base, CX, CXL, CXS, Convenience, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Rendezvous | 2004-2006 | CX, CXL, CXL Plus, Ultra | 6 Cyl 3.6 L GAS
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Buick Oil Pump Part Number: 24500960
$18.83 MSRP: $37.83
You Save: $19.00 (51%)
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Product Specifications
- Other Name: Pump, Oil; Oil Pump Repair Kit; Pump, Engine Oil Pump
Fits the following Buick Models:
- Century | 1992-1993 | Custom, Limited, Special | 6 Cyl 3.3 L GAS
- LeSabre | 1992-1994 | Custom, Limited | 6 Cyl 3.8 L GAS
- Park Avenue | 1992-1994 | Base, Ultra | 6 Cyl 3.8 L GAS
- Regal | 1992-1994 | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
- Riviera | 1995, 1992-1993 | Base, Luxury | 6 Cyl 3.8 L GAS
- Skylark | 1992-1993 | Custom, Gran Sport, Limited | 6 Cyl 3.3 L GAS
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Buick Oil Pump Part Number: 25199823
$83.89 MSRP: $146.40
You Save: $62.51 (43%)
ADD TO CART
Product Specifications
- Other Name: Pump Kit-Oil; Oil Pump Repair Kit; Pump Kit, Engine Oil Pump
- Replaced by: 25200054
Fits the following Buick Models:
- Encore | 2013-2017 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Oil Pump Part Number: 93442037
$161.63 MSRP: $282.05
You Save: $120.42 (43%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump, Oil; Oil Pump Repair Kit; Pump, Engine Oil Pump
- Replaced by: 19540699
- Replaces: 12555283
Fits the following Buick Models:
- Roadmaster | 1995-1996, 1993 | Base, Collector's Edition, Estate Wagon, Estate Wagon Collector's Edition, Limited, Limited Collector's Edition | 8 Cyl 5.7 L GAS
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Buick Oil Pump Part Number: 25200054
$83.89 MSRP: $146.40
You Save: $62.51 (43%)
ADD TO CART
Product Specifications
- Other Name: Pump Kit-Oil; Oil Pump Repair Kit; Pump Kit, Engine Oil Pump
- Replaces: 25199823, 55574770
Fits the following Buick Models:
- Encore | 2013-2020 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Oil Pump Part Number: 12674460
$118.10 MSRP: $206.09
You Save: $87.99 (43%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 12627211
Fits the following Buick Models:
- Envision | 2016-2020 | Base, Essence, Preferred, Premium, Premium II | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FLEX, 4 Cyl 2.5 L GAS
- LaCrosse | 2018-2019 | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
- 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
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Buick Oil Pump Part Number: 12710304
$131.18 MSRP: $228.91
You Save: $97.73 (43%)
ADD TO CART
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 12612289
Fits the following Buick Models:
- LaCrosse | 2008-2009 | Super | 8 Cyl 5.3 L GAS
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Buick Oil Pump Part Number: 12693523
$105.03 MSRP: $173.03
You Save: $68.00 (40%)
ADD TO CART
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 12571885
Fits the following Buick Models:
- Rainier | 2004-2007 | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Oil Pump Part Number: 12696174
$334.22 MSRP: $550.44
You Save: $216.22 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaced by: 12741263
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
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Buick Oil Pump Part Number: 55489202
$96.45 MSRP: $151.07
You Save: $54.62 (37%)
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
Fits the following Buick Models:
- Cascada | 2016-2019 | Base, Premium, Sport Touring | 4 Cyl 1.6 L GAS
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Buick Oil Pump Part Number: 12706965
$132.11 MSRP: $230.54
You Save: $98.43 (43%)
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Product Specifications
- Other Name: Pump, Engine Oil Pump
- Replaces: 12706720, 12666331, 12674266, 12688727, 12666334
Fits the following Buick Models:
- Encore | 2016-2019 | Essence, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Pump, Engine Oil Pump Part Number: 55503981
$91.29 MSRP: $150.39
You Save: $59.10 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Oil Pump
Fits the following Buick Models:
- Encore GX | 2020-2025 | Essence, Preferred, Select | 3 Cyl 1.2 L FLEX, 3 Cyl 1.2 L GAS
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Buick Oil Pump Part Number: 12705142
$124.81 MSRP: $205.55
You Save: $80.74 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
Fits the following Buick Models:
- Encore GX | 2020-2025 | Avenir, Essence, Preferred, Select, Sport Touring | 3 Cyl 1.3 L GAS
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Buick PUMP ASM-OIL Part Number: 12741331
$456.19 MSRP: $751.50
You Save: $295.31 (40%)
Ships in 1-2 Business Days
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Fits the following Buick Models:
- Envision | 2024-2025 | Avenir, Preferred, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Oil Pump Part Number: 55514237
$466.14 MSRP: $736.76
You Save: $270.62 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
Fits the following Buick Models:
- Envision | 2021-2023 | Avenir, Essence, Preferred | 4 Cyl 2.0 L GAS
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Buick Oil Pump Part Number: 93427692
$128.19 MSRP: $201.71
You Save: $73.52 (37%)
Product Specifications
- Other Name: Pump, Oil; Water Pump; Pump Assembly; Pump, Engine Oil Pump
- Replaces: 03848907, 12555284, 12555884, 3848907
Fits the following Buick Models:
- Roadmaster | 1994, 1991-1992 | Base, Estate Wagon, Limited | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Buick Oil Pump Part Number: 12518877
Product Specifications
- Other Name: Gear, Engine Oil Pump; Oil Pump Repair Kit; Gerotor Assembly; Pump Kit, Engine Oil Pump
Fits the following Buick Models:
- Century | 1992 | Custom, Limited, Special | 4 Cyl 2.5 L GAS
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Buick Water Pump Part Number: 89060444
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump
- Replaces: 10229785, 12593581
Fits the following Buick Models:
- Century | 1994-2005 | Custom, Limited, Special, Special Edition | 6 Cyl 3.1 L GAS
- Regal | 1994-1996 | Custom | 6 Cyl 3.1 L GAS
- Rendezvous | 2002-2007 | CX, CX Plus, CXL, CXL Plus | 6 Cyl 3.4 L GAS, 6 Cyl 3.5 L GAS
- Skylark | 1994-1998 | Custom, Gran Sport, Limited, Olympic Gold Edition | 6 Cyl 3.1 L GAS
- Terraza | 2005-2006 | CX, CXL | 6 Cyl 3.5 L GAS
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Buick Oil Pump Part Number: 12555384
Product Specifications
- Other Name: Pump, Engine Oil Pump; Oil Pump Repair Kit
- Replaces: 3539057, 03539057
Fits the following Buick Models:
- Lucerne | 2006-2011 | CXL, CXS, Super | 8 Cyl 4.6 L GAS
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Buick Water Pump Part Number: 12566029
Product Specifications
- Other Name: Pump, Water; Oil Pump
Fits the following Buick Models:
- LaCrosse | 2005-2007 | CXS | 6 Cyl 3.6 L GAS
- Rendezvous | 2004-2006 | CX, CXL, CXL Plus, Ultra | 6 Cyl 3.6 L GAS

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1-20 of 35 Results

Buick Oil Pump

Choose OEM Oil Pump, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Buick's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Buick Oil Pump. You can shop at highly competitive prices and protect your budget. All our genuine Buick parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Buick Oil Pump puts pressurized life into all engines to keep the metal cool, slick and alive. Buick was born in 1903 and married early daring in the automotive industry with an obsession to free, smooth rides that has characterized its road manners up to date. The marque continues to stretch into the future, adding intelligent cabin technology, whisper-quiet insulation and concept vehicles such as the all-electric Wildcat that point to smooth new lines. The drivers such as the feeling of the steering, the softness of the seats during long journeys, and the classiness of the style instead of the loudness, all make it classy. The combination of soft suspension tuning and firm powertrains demonstrates to the brand that you can pursue comfort without losing any punch at the pedal. The Oil Pump drains the pan in the block, pushing it through small galleries and inundates bearings and piston skirts with a continuous and cooling film even when the revs spike on highway merge. On each Buick engine size, this Oil Pump is powered by rough gears and close spaces to force the correct amount of oil at an instant start-up and to keep out harmful air bubbles capable of scuffing metal.

Buick Oil Pump Parts and Q&A

Water Pump
12640448
Q: How to Service and Repair the Oil Pump on Buick LaCrosse?
A:
Begin by taking out the case side cover to start the Oil Pump replacement process. Disconnect solenoid valves (315A/315B/322/334/440) tfp manual valve position switch (395) and temperature sensor (391) connections using a flat-tooth tool while keeping bolt (205) that binds Oil Pump pieces intact. After unplugging all electrical connectors attach to the Oil Pump you should now remove the Oil Pump bolts (206, 207). Once freed securely pull out the Oil Pump (200) from Valve Body (300). .align the Oil Pump (200) with Valve Body (300) openings before inserting Oil Pump bolts (206, 207). Secure the m6 x 1.0 x 85 bolts (207) to 12 nm torque level and the m6 x 1.0 x 95 bolts (206) to 16 nm torque level. Rejoin electrical wires to the control valves beginning with 440 at solenoid 315a while closing with temperature probe 391 and valve position switch 395.
Oil Pump
89017753
Q: How to replace the oil pump in the 4T65-E automatic transmission on Buick Lucerne?
A:
Before disassembling the Oil Pump in the 4t65-e automatic transmission, start with removing the case side cover. Then remove the Oil Pump bolts (230, 231) and Oil Pump (200) from the Valve Body (300). Inspect and clean Oil Pump, making sure it is in a good condition. To install, mount the Oil Pump (200) back on the Valve Body (300) and install the Oil Pump bolts (230, 231). Torque the nine (231) m6 x 1.0 x 85 bolts to 12 nm (106 lb in) and the two (230) m6 x 1.0 x 95 bolts to 16 nm (12 lb ft). Experts recommend resetting the transmission adaptive pressure (TAP) values through the scan tool because it will clear all learned values, whereby the Engine Control Module (ECM), powertrain control module (PCM), or transmission control module (TCM) will have to learn all tap values, and this will impact the transmission performance. Lastly, re-cover the side cover of the case.