Oil Pump, Wet Sump, Internal, Standard Volume, GM LS-Series, Each.
- Standard Volume
- Standard Pressure
- Cast Aluminum Housing
- O-Rings Included
$51.95 Original price was: $51.95.$36.37Current price is: $36.37.

Oil Pump, Wet Sump, Internal, Standard Volume, GM LS-Series, Each.
Engines & Engine Parts
Engines & Engine Parts
Engines & Engine Parts
Cheap ✨ Dura-Bond CH-10 Camshaft Bearing Set For Chevy LS1 ❤️
Engines & Engine Parts
Engines & Engine Parts
Engines & Engine Parts
Best deal ???? COMP Cams 4605 Cam Lock Plate For Chevrolet V8 ✔️
Engines & Engine Parts
Engines & Engine Parts
Best reviews of ⌛ GM Performance Parts 12557840 Balancer Bolt ✨
J. Chacon –
The oil pump worked perfectly to fix the ticking under the hood of my 2005 Chevy Avalanche Z71 4×4 LTZ Flex Fuel Truck.I was having a few symptoms, which everyone told me was a lifter knock. I was told that I would have to change the lifters and camshaft to get it to stop. The symptoms I was having are as follows:Ticking under the hoodOil pressure gauge fluctuation (down to zero when idling/cold and continually fluctuating while driving)I had changed the oil pressure sensor, so I knew it wasn’t that. I started to do the work, but I didn’t buy any parts until I checked for metal shavings in the oil pan and looked at the camshaft through the oil pan after removing the pan and plate underneath. I turned the engine manually so that I could see what the camshaft looked like. It looked smooth and glassy. There were no metal shavings in the oil pan, so I knew it could not be lifter knock. (Here you are looking for a significant amount of metal shavings, mine didn’t have any).I decided instead to change the oil pump and o-ring. After a good week of work (including ordering and waiting for parts), the ticking was gone. The oil pump was the problem. The ticking is no longer there. My truck runs smoothly…actually better than when I first bought it. Since my truck had 150,000 miles on it, I also did a full moon trunion upgrade because Chevy put cheap half-moon trunions in the LS’s, which tend to break and cause more damage in the engine. I also put new pushrods in. I went from 7.393 to 7.400 pushrods. These are upgrades though. Eventually, you may have to do the trunion upgrade if you want to keep your motor running and to keep from having to do costly repairs because the cheap ones break. Essentially though, if your truck is ticking and all you want is for it to stop, I would look at the symptoms above and if you don’t see metal shavings anywhere, then the likelihood the ticking is coming from the oil pump. Change the oil pump and o-ring on the oil pump inlet tube and the ticking will go away.This oil pump saved my truck. Thank you 🙂
Kindle Customer –
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.
Bo M. –
Its nice to know after a build that you didnt skimp on the oil pump
Keith –
installed this on a used engine… oil pressure up to 60 psi on accel and 35-40 at idle…
B Vay –
OMG I have oil pressure. Who knew is was so important.
noah count –
Replaced at customer’s request. Had no effect on low oil pressure whatsoever. This isn’t what causes low oil pressure, ever.
Vernon Baldwin –
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.
Bradley –
Product works just as good as oem oil pump I finally have my 55-60 psi while driving instead of 45 toon forever to figure out though so alot of damage a wear to engine????. Its definitely not the easiest thing yo install but definitely doable as long as you keep that 10mm socket on a leash lol love it though!