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Engine Oil Pump

4.7 4.7 out of 5 stars 1,744 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Automotive Replacement Engine Oil Pumps by Melling

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Brand Melling
Fit Type Vehicle Specific Fit
Item Dimensions LxWxH 8 x 6 x 5.2 inches
Item Weight 1.2 Kilograms
Specification Met OE

About this item

  • Standard Volume
  • Standard Pressure
  • Cast Aluminum Housing
  • O-Rings Included
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This product has fewer returns than average compared to similar products.

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Product Description

Oil Pump, Wet Sump, Internal, Standard Volume, GM LS-Series, Each.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Engine Oil Pump


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,744 global ratings

Customers say

Customers like the fit, quality and ease of installation of the fuel pump. For example, they mention it's well made, easy to install and performs better than the stock pump. That said, opinions are mixed on the oil pressure.

AI-generated from the text of customer reviews

58 customers mention48 positive10 negative

Customers like the quality of the oil pump. They say it's well-made, and better than the factory. Some say it is the best oil pump for a fresh rebuild or tight tolerance motor, and it has an excellent finish.

"...Still holding great and the same psi as my last update (about 42 idle, 57-60 cruise speeds) no problems!!!..." Read more

"...Came in an authentic sealed Melling box and the part was of excellent finish.Don't be like me and have to order twice...." Read more

"Good pump. I use these on everything from daily drivers to drift cars. Ive purchased multiple from this source, true Melling pump." Read more

"Helps with double roller timing chain clearance issues. Great pump made in US A" Read more

39 customers mention39 positive0 negative

Customers are satisfied with the performance of the fuel pump. They mention that it works better than their stock pump, it never goes under 40 psi, and it helps with double roller timing chain clearance issues.

"2007 tahoe 5.3. Worked great" Read more

"...The oil pump was the problem. The ticking is no longer there. My truck runs smoothly...actually better than when I first bought it...." Read more

"The engine is running good." Read more

"Oil pump was as advertised and is a great value and worked as well as it could have...." Read more

16 customers mention16 positive0 negative

Customers are satisfied with the fit of the fuel pump. They mention that it fits perfectly.

"Fit good, works great" Read more

"Fit and worked great. I did disassemble it and coat with red line Assembly lube. I did not prime it, it picked up the oil immediately...." Read more

"Excellent pump it fit perfectly I got ten thousand miles on it now and it still working perfectly" Read more

"...part number found all over the internet - at much less cost - no fitment issues - works perfect." Read more

11 customers mention11 positive0 negative

Customers find the installation of the fuel pump to be easy. They mention that the pump is precision made, and it installs flawlessly. Some appreciate the easy directions with tips.

"Easy to install, Arrived on time, replaced original oil pump with 240k + in miles. High Q finish. Added some oil via hole on pump...so no dry start." Read more

"Great product installation was a breeze if you know your way around tools you should be good" Read more

"Easy to install will last the life of the engine" Read more

"...No problems with this at all easy to prime. Would buy again." Read more

33 customers mention19 positive14 negative

Customers have mixed opinions about the oil pressure of the pump. Some mention that it has great pressure, while others say that it had no effect on low oil pressure.

"...and ordered this bad boy and it’s been a month and she’s holding steady oil pressure, don’t hesitate it’s not even expensive but worth the cash" Read more

"...Ticking under the hoodOil pressure gauge fluctuation (down to zero when idling/cold and continually fluctuating while driving)..." Read more

"Has great oil pressure" Read more

"...Like many written reviews here. Low oil pressure when the mileage get high...." Read more

6 customers mention0 positive6 negative

Customers are dissatisfied with the durability of the fuel pump. They mention that it failed within six hours of run time and didn't hold up.

"...It just doesn't perform being new and the engine at operating temperature." Read more

"...7.1hour job by book time and had to due it 2 times because this pump didn't hold up." Read more

"I like this product but it failed on the second day I was driving. I am getting no oil or oil pressure to my engine. I just rebuilt it and now this...." Read more

"...this pump on my 6.0 ls had 45 pound at start up pump failed within 6 hours of run time the melling store is NOT affiliated with the manufacturer and..." Read more

Such good quality
5 Stars
Such good quality
I use these on every LS swap...always work grt8
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Top reviews from the United States

Reviewed in the United States on November 25, 2023
Reviewed in the United States on December 16, 2023
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5.0 out of 5 stars Such good quality
Reviewed in the United States on December 16, 2023
I use these on every LS swap...always work grt8
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One person found this helpful
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Reviewed in the United States on July 26, 2019
49 people found this helpful
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Reviewed in the United States on November 17, 2023
One person found this helpful
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Reviewed in the United States on July 14, 2023
3 people found this helpful
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Reviewed in the United States on May 22, 2022
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4.0 out of 5 stars Check for shavings!
Reviewed in the United States on May 22, 2022
Test fitted the pump. Removed it and found a metal shaving on the pick up tube. Found the outer ring to have the edge chamfer facing outward. OEM had the chamfer facing inward, thus allowing for corner clearance in the housing. Reinstalled it with the chamfer facing inward. Remember to shim the stator, outer ring with 0.002” fueler gauges before bolting on the housing. Plus prime the pump thru the side drain plug on the block, Melling has a video. The pick up tube did not slide into the housing hole, but used a screw driver to press the clip up and the tube slide into the hole. Chevy Avalanche, installed with the pan ON. 3d printed a custom wrench to install the pick up bolt, otherwise I could not have installed it without dropping the pan.
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9 people found this helpful
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Reviewed in the United States on January 30, 2020
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5.0 out of 5 stars Great Product
Reviewed in the United States on January 30, 2020
A much needed oil pump for the Vortec V8. Like many written reviews here. Low oil pressure when the mileage get high. Also if the vehicle is driving up or down hill the valves will start to tick like crazy. Did all the research while some will say its the oil ring around the pick up tube or a bad pump. I decided to just replace the whole thing as a unit. My vehicle is a 2004 GMC Envoy XL (VIN P 5.3L LM4) Overall diffcuilty of this vehicle is that the front diff/ intermediate shaft/ axle disconnect are all connected to the oil pan. Unlike the GM full trucks like the Tahoe/Suburban/ C or K Series pick-ups. There 4wd system are not connected to the oil pan. The GMT 360/370 Chevy Trailblazer/ GMC Envoy/ Buick Rainer/ Saab 9-7 X/ Isuzu Ascender has a tighter engine compartment to work on. But overall Im happy that this pump is doing a great job of supplying oil to the engine. No more ticking up or down hills. If you owe a GMT 360/370 be prepare to pay a hefty labor for a shop to do the job or do what I did and take on the job yourself. Engine has 340k on it. New oil pump, new timing chain with sprockets, timing cover.
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19 people found this helpful
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Reviewed in the United States on August 19, 2023

Top reviews from other countries

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ALVARO MARQUEZ GARCIA
5.0 out of 5 stars El producto queda a la medida presión correcta
Reviewed in Mexico on April 3, 2023
Josh t
5.0 out of 5 stars awesome product even better flow with mods
Reviewed in Canada on March 10, 2023
One person found this helpful
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Erkan Y.
5.0 out of 5 stars Great pump at a great price
Reviewed in Australia on July 29, 2021
Randall Ivory
5.0 out of 5 stars Great product And price
Reviewed in Canada on June 19, 2023
SYED HAMID
5.0 out of 5 stars Excellent Quality and Price
Reviewed in Canada on August 11, 2020