Engine Oil Pump

4.7 4.7 out of 5 stars | 429 ratings

Price: 127

Last update: 01-05-2025


About this item

High Pressure
Standard Volume
Includes optional +25 psi high pressure spring for the COPO Camaro engines.
Stock Volume, 10 PSI increase in pressure over M295 oil pump.
Uses 7/8" diameter standard bolt on screen

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Engine Oil Pump

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Top reviews from the United States

  • Happy shopper
    5.0 out of 5 stars Great oil pressure on old engine
    Reviewed in the United States on May 21, 2024
    I had a lifter fail on my 5.3 vortec 03 suburban. I pulled both heads, replaced all the lifters, springs and valve guid seals and put in a stage 2 cam. I had decent oil pressure before so I left the oil pump in place. I thought I dropped a bolt down the cam valley though so I pulled the oil pan and pick up tube. I reused the o ring on the pickup tube and that was a terrible idea. After everything was done I started the truck and had 40psi at idle but after the engine warmed up it would drop to less then 10 at warm idle.
    I decided to just order a new oil pump and because of the choppy idle I opted to up the oil pressure. This pump performs great! I used the installed spring, instiall the bolts hand tight and then spin engine 360 degrees to align the pump and then torque the bolts tight. I primed it by cranking the engine with the injectors unplugged on each valve cover. Once I plugged the injectors back in and started the truck it built pressure instantly. I attached 3 photos, one showing cold idle, one showing cruising and one showing warm idle. Oil pressure peaks just under 80 psi on hard throttle and never drops under 40 now. Very happy, hopefully I get another 240,000 miles out this engine now.
    Customer image
    Happy shopper
    5.0 out of 5 stars Great oil pressure on old engine
    Reviewed in the United States on May 21, 2024
    I had a lifter fail on my 5.3 vortec 03 suburban. I pulled both heads, replaced all the lifters, springs and valve guid seals and put in a stage 2 cam. I had decent oil pressure before so I left the oil pump in place. I thought I dropped a bolt down the cam valley though so I pulled the oil pan and pick up tube. I reused the o ring on the pickup tube and that was a terrible idea. After everything was done I started the truck and had 40psi at idle but after the engine warmed up it would drop to less then 10 at warm idle.
    I decided to just order a new oil pump and because of the choppy idle I opted to up the oil pressure. This pump performs great! I used the installed spring, instiall the bolts hand tight and then spin engine 360 degrees to align the pump and then torque the bolts tight. I primed it by cranking the engine with the injectors unplugged on each valve cover. Once I plugged the injectors back in and started the truck it built pressure instantly. I attached 3 photos, one showing cold idle, one showing cruising and one showing warm idle. Oil pressure peaks just under 80 psi on hard throttle and never drops under 40 now. Very happy, hopefully I get another 240,000 miles out this engine now.
    Images in this review
    Customer image Customer image Customer image
  • Kevin S.
    5.0 out of 5 stars Quality oil pump
    Reviewed in the United States on September 20, 2024
    Nice
  • David Anderson
    5.0 out of 5 stars Melling oil pump
    Reviewed in the United States on September 5, 2024
    Don't buy a cheap oil pump off of Amazon and then have to replace it almost immediately like I did. Get the melling pump, you won't regret it. The Chinese pump I bought it was hard to get the timing chain cover over it.
  • jerry lee hargrove
    5.0 out of 5 stars Oil pump
    Reviewed in the United States on April 8, 2024
    Oil pump work great keeps good oil pressure not had a problem with this fitting a 2008 Chevy Silverado .
  • karl
    5.0 out of 5 stars Amazing oil pressure
    Reviewed in the United States on August 12, 2020
    I run this pump on every Silverado/Sierra I work on that even remotely requires a pump/ timing cover removed. I alway use the max psi spring. One 6.0 I put one in with 270k well maintained miles holds 65 psi going down the highway all day long. One of my 5.3s that wasn’t so well maintained with 255k miles holds about 53 psi on the highway. My severally beaten and abused 5.3 holds 45 psi going down the highway. That’s just 3 ive done and I will always use this pump when I need to. Also I’ve never pulled the oil pan the pickup bolt does suck sometimes but not too bad
  • Ray J.
    5.0 out of 5 stars Old company great product.
    Reviewed in the United States on March 18, 2022
    5.3 gm engine. No oil pressure after installing
    Mellings high pressure pump holds 75 lbs of pressure even after oil has warmed up.
  • kelly jo selke
    5.0 out of 5 stars Quality pump! Inferior instructions
    Reviewed in the United States on July 19, 2022
    Pump works great! But they fail to mention to finger tight the bolts and rotate the engine 360 degrees and then torque the housing bolts! Learned this the hard way!!!! Totally my fault but would have/ should been in the introductions that come with the pump!
  • Hassan El-Ghit
    1.0 out of 5 stars Failed 3 miles in
    Reviewed in the United States on July 23, 2024
    Never would have thought a Melling pump would be known for questionable QC, but this is just unacceptable on such a crucial part of an engine. Failed within 3 miles by seizing, no debris from engine break in. Primed and checked prior to running. Changed oil twice with no issue. Lost a new engine. Be wary.

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