JoshGSX95
Probationary Member
- 24
- 18
- Aug 31, 2022
-
Providence,
Rhode Island
So, when I initially ordered this pump, I was really hoping when it came time to write this thread I’d start off by saying “guys, I found the “white box” OEM oil pump.” After unboxing that’s not the case, but close to it.
With the prices of the OEM pumps starting to reach the mid $400’s from mitsu, as much as $600 from some vendors. Over seas you’ll find it for middle to high 300’s, but also consider cost of shipping. I can’t help but think of it as a trend that is going to continue in the upward direction. Imagine how much they’re going to be in say five years. $800? Who knows.
But there will be a time when they become non existent or much more expensive. We can continue to enjoy them in the mean time but that day will come.
With all that said it leads to people trying new things and with the price increases, we start to see people venture off in different directions. One of those being the ACL pumps at $200 -/+, and recently I started reading that people are having good luck with the amazon Evergreen pumps at $100 -/+.
I found this oil pump by accident on eBay Heres the link. i paid about $60 after taxes.
After further investigation, It can also be found here under the brand “replacement” 2181-02037149
on partsgeek for $47. I suspect the few eBay sellers get them here.
As far as I know, I have not seen ANY other oil pumps other than OEM with the G6K stamp. You may see a front case with the oval of where the stamp should be, but no g6k. Here’s an example of a rock auto SKP pump.
After finding a few other listings of the same pump, the 115-020 pump has every single OEM factory marking so this is what made me pull the trigger.
Oem^
The aftermarket unit had a Philips screw seen above, even after trying to tap the screw loose using a hammer on the end of the screw driver it still stripped. The screw was too soft and they really tq’ed it in there. Had a buddy tack a nut on to get it out.
that’s the overview of the visual similarities, at first glance I’m pretty impressed. There’s only a couple of casting differences that that I’ll point out next
Aftermarket ^
OEM ^
This channel to the balance shaft oil holes has a small ledge on the OEM unit vs the aftermarket is flush and flows straight through. I see this as a benefit?
OEM
Aftermarket^
The oil grooves look similar up until the little groove on the 3’ clock side seemed to be an afterthought as it’s almost V shaped, maybe cut into the housing after the oil grooves?
This is probably the only and worst thing that needs attention out of the casting differences. I plan on either using the dremel or diamond file to clean that up. Now’s a good time to say I plan on going over the whole pump to debur things like this.
Oem 50.2g
Aftermarket 47.7g
The driven gears themselves are visually close, the lip on the ID has a chamfer to it. I think it gives an optical illusion, making it look like that ID is smaller on the aftermarket.
Aftermarket 248.8g
Oem 250.6g
Aftermarket oil hole is more oval
Oem ^
The dowels are in the case on OEM, vs in the pump housing itself on aftermarket. Oil grooves seem about the same maybe a little more pronounced on aftermarket.
As far as measuring goes
OEM ^
Aftermarket ^
OEM Aftermarket Difference (than OEM)
A. .5089 .5121 + 0.0032 bigger
B. .5043 .5014 - 0.0029 smaller
C. .7216 .6904 -0.0312 smaller
D. .4726 .4712 -0.0014 smaller
Helical aftermarket gears
Driven gear clearance .003 fits with slight drag
Drive gear clearance .003 fits with slight drag
My straight cut gears had the same clearance at .003
OEM drive gear diameter= .7864
Helical aftermarket drive gear diameter = .7866
Bore for drive gear = .7875
Drive gear oil clearance = .0009
Straight cut diameter = .7860
Straight cut drive gear oil clearance = .0015
Safe to use the straight cuts with that oil clearance?
I feel fairly confident so far just based on the quality of the pump but this is where I could use one of you gurus to see what you think.
If you’ve gotten this far thanks for reading, I’m curious to hear your thoughts. I think I ran out of room for pictures so this is part 1 of the review.
If I missed anything or if your curious to see anything else, please let me know and I’ll be glad to share.
With the prices of the OEM pumps starting to reach the mid $400’s from mitsu, as much as $600 from some vendors. Over seas you’ll find it for middle to high 300’s, but also consider cost of shipping. I can’t help but think of it as a trend that is going to continue in the upward direction. Imagine how much they’re going to be in say five years. $800? Who knows.
But there will be a time when they become non existent or much more expensive. We can continue to enjoy them in the mean time but that day will come.
With all that said it leads to people trying new things and with the price increases, we start to see people venture off in different directions. One of those being the ACL pumps at $200 -/+, and recently I started reading that people are having good luck with the amazon Evergreen pumps at $100 -/+.
I found this oil pump by accident on eBay Heres the link. i paid about $60 after taxes.
After further investigation, It can also be found here under the brand “replacement” 2181-02037149
on partsgeek for $47. I suspect the few eBay sellers get them here.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
As far as I know, I have not seen ANY other oil pumps other than OEM with the G6K stamp. You may see a front case with the oval of where the stamp should be, but no g6k. Here’s an example of a rock auto SKP pump.
You must be logged in to view this image or video.
After finding a few other listings of the same pump, the 115-020 pump has every single OEM factory marking so this is what made me pull the trigger.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
Oem^
You must be logged in to view this image or video.
The aftermarket unit had a Philips screw seen above, even after trying to tap the screw loose using a hammer on the end of the screw driver it still stripped. The screw was too soft and they really tq’ed it in there. Had a buddy tack a nut on to get it out.
You must be logged in to view this image or video.
that’s the overview of the visual similarities, at first glance I’m pretty impressed. There’s only a couple of casting differences that that I’ll point out next
You must be logged in to view this image or video.
Aftermarket ^
You must be logged in to view this image or video.
OEM ^
This channel to the balance shaft oil holes has a small ledge on the OEM unit vs the aftermarket is flush and flows straight through. I see this as a benefit?
You must be logged in to view this image or video.
OEM
You must be logged in to view this image or video.
Aftermarket^
The oil grooves look similar up until the little groove on the 3’ clock side seemed to be an afterthought as it’s almost V shaped, maybe cut into the housing after the oil grooves?
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
This is probably the only and worst thing that needs attention out of the casting differences. I plan on either using the dremel or diamond file to clean that up. Now’s a good time to say I plan on going over the whole pump to debur things like this.
You must be logged in to view this image or video.
Oem 50.2g
You must be logged in to view this image or video.
Aftermarket 47.7g
The driven gears themselves are visually close, the lip on the ID has a chamfer to it. I think it gives an optical illusion, making it look like that ID is smaller on the aftermarket.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
Aftermarket 248.8g
You must be logged in to view this image or video.
Oem 250.6g
You must be logged in to view this image or video.
You must be logged in to view this image or video.
Aftermarket oil hole is more oval
You must be logged in to view this image or video.
Oem ^
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
The dowels are in the case on OEM, vs in the pump housing itself on aftermarket. Oil grooves seem about the same maybe a little more pronounced on aftermarket.
As far as measuring goes
You must be logged in to view this image or video.
OEM ^
You must be logged in to view this image or video.
Aftermarket ^
OEM Aftermarket Difference (than OEM)
A. .5089 .5121 + 0.0032 bigger
B. .5043 .5014 - 0.0029 smaller
C. .7216 .6904 -0.0312 smaller
D. .4726 .4712 -0.0014 smaller
Helical aftermarket gears
Driven gear clearance .003 fits with slight drag
Drive gear clearance .003 fits with slight drag
My straight cut gears had the same clearance at .003
OEM drive gear diameter= .7864
Helical aftermarket drive gear diameter = .7866
Bore for drive gear = .7875
Drive gear oil clearance = .0009
Straight cut diameter = .7860
Straight cut drive gear oil clearance = .0015
Safe to use the straight cuts with that oil clearance?
I feel fairly confident so far just based on the quality of the pump but this is where I could use one of you gurus to see what you think.
If you’ve gotten this far thanks for reading, I’m curious to hear your thoughts. I think I ran out of room for pictures so this is part 1 of the review.
If I missed anything or if your curious to see anything else, please let me know and I’ll be glad to share.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
