Engine Oil Pump - ACDelco (55503981)

ACDelcoMPN55503981
Sale Price$88.31
Description : GM Genuine Parts Engine Oil Pumps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. The engine oil pump is resposbile for maintaining the engine's oil pressure as well as pushing the oil through the engine. 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 - www.P65Warnings.ca.gov
engine-oil-pump;oil-pump;engine-parts;pumps

Ships To You

Ready to ship today.

My Location

Product Details

Description

GM Genuine Parts Engine Oil Pumps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. The engine oil pump is resposbile for maintaining the engine's oil pressure as well as pushing the oil through the engine. 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 - www.P65Warnings.ca.gov
engine-oil-pump;oil-pump;engine-parts;pumps

Part Number (MPN)
55503981
Brand
SKU
55503981
UPC / GTIN
193468521306 / 00193468521306
Condition
New
Other Names
55503981
Brand
GM Genuine Parts
Drive Sprocket Included
Yes
Drive Type
Timing Belt
FAQ - Answer 1
A: Yes. Always consult the Vehicle Owner's manual or an expert technician before making any repairs or adjustments.
FAQ - Answer 2
A: Milky or discolored oil
FAQ - Answer 3
A: Yes loss of oil pressure causes friction and damage to engine components
FAQ - Answer 4
A: Check owner's manual or consult a technician for proper amount of oil
FAQ - Question 1
Q: Should the Vehicle Owner's manual or an expert technician be consulted before making any repairs or adjustments?
FAQ - Question 2
Q: What is a sign of oil contamination?
FAQ - Question 3
Q: Will oil pressure drop damage an engine?
FAQ - Question 4
Q: How much oil does my vehicle hold?
Features & Benefits - Bullet 1
Maintains engine oil pressure
Features & Benefits - Bullet 2
Designed to help extend engine life
Features & Benefits - Bullet 3
Reliable and dependable performance
Features & Benefits - Bullet 4
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features & Benefits - Bullet 5
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Features & Benefits - Bullet 6
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 7
GM regularly updates production and service part designs to integrate new materials and technologies
Gasket Or Seal Included
Yes
Good Maintenance Practices - Section 1 - Bullet 1
Keep oil changed and level full for proper lubrication
Good Maintenance Practices - Section 1 - Bullet 2
Use proper weight and type oil
Good Maintenance Practices - Section 1 - Bullet 3
Replace oil if any sign of contamination present
Good Maintenance Practices - Section 1 - Bullet 4
Regularly inspect engine oil pump for signs of damage or wear, and replace them if signs of damage are found
Good Maintenance Practices - Section 1 - Header
Before purchasing and installing a engine oil pump, make sure it is the correct fit for your vehicle
Grade Type
Regular
Height
99<br />3.9
Housing Material
Aluminum
Length (in)
8.8
Mounting Hole Diameter
6<br />0.24
Mounting Hole Quantity
3
Oil Pump Pressure Type
Standard Pressure
Oil Pump Type
Rotary
Oil Pump Volume Type
Standard Volume
Pickup Screen Diameter (in)
2.52
Pickup Screen Diameter (mm)
64
Pickup Tube Diameter
22.5<br />0.89
Signs of Wear & Troubleshooting - Section 1 - Bullet 1
Loss of oil pressure
Signs of Wear & Troubleshooting - Section 1 - Bullet 2
Increased engine temperature from increased friction caused by lack of lubrication
Signs of Wear & Troubleshooting - Section 1 - Bullet 3
Engine noise from lack of lubrication
Signs of Wear & Troubleshooting - Section 1 - Header
Signs of wear for engine oil pumps include but are not limited to:
Solenoid Included
No
Weight (lb)
5.68
Width
127<br />5

YearMakeModelBody & TrimEngine & Transmission
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission

BrandEquivalent Part Numbers

Rows per page:

0-0 of 0

BrandEquivalent Part Numbers
GM
55503981

Shipping Policy

At AyoParts, we’re committed to delivering high-quality automotive parts with speed, reliability, and care. Our mission is to ensure you get the parts you need to keep your vehicle running at its best—quickly, efficiently, and hassle-free... Check out our Shipping Policy for more details.

Return Policy

At AyoParts, your satisfaction is important to us. If you need to return an item, please review the guidelines below to ensure a smooth and efficient process... Check out our Return Policy for more details.


ACDelco

Find quality aftermarket auto parts fast. AYO Parts offers trusted brands, great prices, and quick shipping for cars, trucks & SUVs.

Browse the Full ACDelco Parts Catalog

AYOparts.com

At AYO Parts, we’re driven by one mission — to get you the right aftermarket parts, fast. Whether you’re a professional mechanic or a DIY enthusiast, we offer a wide range of high-quality, reliable components for cars, trucks, and SUVs.

Our team combines deep industry expertise with a passion for service, ensuring you get accurate fitment, competitive prices, and quick delivery. We partner with trusted brands to help you keep vehicles performing at their best — without the hassle.

From everyday maintenance items to hard-to-find components, AYO Parts​ is your go-to source for aftermarket automotive solutions.