What type of fuel pumps are used on all carbureted engines, and how do they operate on Buick Century?

Fuel pumps used on all carbureted engines are of the single-action mechanical type, with the rocker arm held in constant engagement with the eccentric on the camshaft by a spring. As the rocker arm moves upward, the fuel link pulls the diaphragm downward, enlarging the fuel chamber and drawing fuel from the tank. Fuel flows to the carburetor when the outlet line pressure is less than that maintained by the diaphragm spring. All fuel pumps on Century/Regal models are sealed units and must be replaced if defective. To remove the mechanical fuel pump, locate it, disconnect the fuel lines, and remove the mounting bolts, discarding the gasket. Clean all gasket material from the mating surfaces before installing a new gasket and the pump, then reconnect the fuel lines and check for leaks after starting the engine. Testing involves checking the suction side from the tank to the pump and the pressure side from the pump to the carburetor. A leak on the pressure side is indicated by dripping fuel, while a suction side leak may only be noticeable when the engine is off. Tighten any loose connections and inspect for bends or kinks. To check for clogs or pump defects, disconnect the pump at the carburetor, disable the ignition, and crank the engine to see if gasoline flows from the pipe. If fuel flows well, check the fuel pressure with a gauge while running the engine at approximately 450-1,000 rpm, ensuring the pressure remains within specified limits; if not, the pump should be replaced.

Genuine Buick Century Fuel Pump

Gas Pump

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20 Fuel Pumps found

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Buick Century Fuel Pump
Part Number: 25163468
$83.89 MSRP: $173.16
You Save: $89.27 (52%)
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Product Specifications
- Other Name: Pump,Fuel
- Replaces: 25163470, 25116167, 25163471
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1992 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR, SPECIAL 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.3L
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Buick Century Fuel Pump Assembly
Part Number: 25116285
$34.40 MSRP: $102.26
You Save: $67.86 (67%)
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Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump; Fuel Pump
- Replaces: 25116286
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1989-1992 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR | 4 Cyl 2.5L
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Buick Century Electric Intank Pump
Part Number: 25116162
$72.30 MSRP: $136.40
You Save: $64.10 (47%)
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Product Specifications
- Other Name: Pump, Electric Intank ; Pump, Fuel Pump; Fuel Pump
- Replaces: 25115466, 25116156
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 2.8L
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Buick Century Fuel Pump Assembly
Part Number: 25326793
$72.42 MSRP: $135.72
You Save: $63.30 (47%)
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Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump; Fuel Pump
- Replaces: 25117380
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1989-1992 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR | 6 Cyl 3.3L
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Buick Century MODULE KIT,F/TNK F/PMP
Part Number: 19369965
$389.83 MSRP: $739.33
You Save: $349.50 (48%)
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Product Specifications
- Other Name: Fuel Pump
- Replaces: 19180109, 19331286, 89060193
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 Buick Century | CUSTOM, LS | 6 Cyl 3.1L
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Buick Century Fuel Tank Meter/Pump SENDER
Part Number: 19111393
$165.10 MSRP: $309.41
You Save: $144.31 (47%)
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Product Specifications
- Other Name: Sender Kit,Fuel ; Sender, Fuel Tank Meter/Pump; Fuel Gauge Sending Unit, Sending Unit
- Replaces: 25028359
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993-1996 Buick Century | CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL, SPECIAL 4 DOOR, SPECIAL STATION WAGON | 4 Cyl 2.2L, 6 Cyl 3.1L, 6 Cyl 3.3L
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Buick Century MODULE KIT,F/TNK F/PMP
Part Number: 19369955
$257.07 MSRP: $530.59
You Save: $273.52 (52%)
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Product Specifications
- Replaces: 19332109, 25344933, 19177221, 25331861, 25317743
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2003 Buick Century | CUSTOM, LIMITED, LS | 6 Cyl 3.1L
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Buick Century Fuel Tank Meter/Pump Meter
Part Number: 25094114
$188.04 MSRP: $589.24
You Save: $401.20 (69%)
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Product Specifications
- Other Name: Meter,Fuel ; Sender, Fuel Tank Meter/Pump; Fuel Gauge Sending Unit, Gauge, Sending Unit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1989-1991 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR | 4 Cyl 2.5L, 6 Cyl 3.3L
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Buick Century Fuel Pump Assembly
Part Number: 6472020
$5.17 MSRP: $106.73
You Save: $101.56 (96%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump; Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1986 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 2.8L
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Buick Century Fuel Pump Assembly
Part Number: 88962471
Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump
- Replaces: 25117081
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993-1996 Buick Century | CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL, SPECIAL 4 DOOR, SPECIAL STATION WAGON | 4 Cyl 2.2L, 6 Cyl 3.1L, 6 Cyl 3.3L
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Buick Century Fuel Pump
Part Number: 25168719
Product Specifications
- Other Name: Pump,Fuel
- Replaces: 25166252, 6472232, 25166717, 6472011
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.8L
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Buick Century Fuel Pump Assembly
Part Number: 25116281
Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump; Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.8L
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Buick Century Fuel Pump Assembly
Part Number: 6472949
Product Specifications
- Other Name: Pump Asm,Fuel; Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 4.3L Diesel
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Buick Century Fuel Pump Assembly
Part Number: 6472153
Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump; Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 4.3L Diesel
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Buick Century Fuel Pump Assembly
Part Number: 6472511
Product Specifications
- Other Name: Pump Asm,Fuel ; Pump, Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 4.3L Diesel
View related parts
Buick Century Fuel Pump Assembly
Part Number: 6471952
Product Specifications
- Other Name: Pump Asm,Fuel; Fuel Pump
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 4.3L Diesel
View related parts
Buick Century Fuel Tank Meter/Pump SENDER
Part Number: 25003646
Product Specifications
- Other Name: Sender,Fuel; Fuel Gauge Sending Unit, Gauge, Sending Unit
- Replaces: 25090484
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.8L
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Buick Century Fuel Tank Sender
Part Number: 25092134
Product Specifications
- Other Name: Sender,Fuel Tank; Fuel Gauge Sending Unit, Gauge, Sending Unit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1988 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 2.8L
View related parts
Buick Century Fuel Tank Meter/Pump Meter
Part Number: 25093498
Product Specifications
- Other Name: Meter,Fuel ; Sender, Fuel Tank Meter/Pump; Fuel Gauge Sending Unit, Gauge, Sending Unit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1989-1992 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR | 6 Cyl 3.3L
View related parts
Buick Century Fuel Tank Meter/Pump SENDER
Part Number: 25093521
Product Specifications
- Other Name: Sender,Fuel ; Sender, Fuel Tank Meter/Pump; Fuel Gauge Sending Unit, Gauge, Sending Unit
- Replaces: 25092346
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1988 Buick Century | CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR | 4 Cyl 2.5L, 6 Cyl 2.8L

Buick Century Fuel Pump

In Buick Century vehicles, the Fuel Pump assists in the supply of fuel from the tank to the engine in order to assist in combustion. Buick Century cars employ both mechanical as well as electrical fuel pumps being used based on the kind of engine that is installed on the car. Low-pressure mechanical type pumps are used in carbureted engines while fuel injected engines incorporate electric type named pumps, sometimes these pumps are lodged in the fuel tanks so as to experience a cooling impact. Within the past several years the Buick Century has gone through the change from old style mechanical pumps which developed relatively low pressures to the new model, the electric pump, able to develop higher pressures, making it more efficient and powerful. Electric pump uses the electronic control units to monitor the fuel efficiency while the mechanical pump is as acceptable as the others for some uses. The development in Fuel Pump technology that has been realized here is in line with the new engine demands required in Buick Century cars.

Each OEM Buick Century Fuel Pump we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Buick Century Fuel Pump Parts Questions & Experts Answers

Electric Intank Pump
25116162
Q: What type of fuel pumps are used on all carbureted engines, and how do they operate on Buick Century?
A: Fuel pumps used on all carbureted engines are of the single-action mechanical type, with the rocker arm held in constant engagement with the eccentric on the camshaft by a spring. As the rocker arm moves upward, the fuel link pulls the diaphragm downward, enlarging the fuel chamber and drawing fuel from the tank. Fuel flows to the carburetor when the outlet line pressure is less than that maintained by the diaphragm spring. All fuel pumps on Century/Regal models are sealed units and must be replaced if defective. To remove the mechanical fuel pump, locate it, disconnect the fuel lines, and remove the mounting bolts, discarding the gasket. Clean all gasket material from the mating surfaces before installing a new gasket and the pump, then reconnect the fuel lines and check for leaks after starting the engine. Testing involves checking the suction side from the tank to the pump and the pressure side from the pump to the carburetor. A leak on the pressure side is indicated by dripping fuel, while a suction side leak may only be noticeable when the engine is off. Tighten any loose connections and inspect for bends or kinks. To check for clogs or pump defects, disconnect the pump at the carburetor, disable the ignition, and crank the engine to see if gasoline flows from the pipe. If fuel flows well, check the fuel pressure with a gauge while running the engine at approximately 450-1,000 rpm, ensuring the pressure remains within specified limits; if not, the pump should be replaced.