4G63 DSM & Evo Ball Bearing Oil Pump

From: $1,525

The ball bearing gerotor oil pump has gone through testing and is now available for preorder!

Placing an order for the pump will require 80% down and 20% upon shipment. Use the coupon code oilpump to correct the price to the deposit amount. If you want to pay in full, you are welcome to. Totally up to you. If you do use the coupon, shipping will be paid with the last 20%. If you pay in full, it will charge you the shipping as well.

Please note that this is a preorder!! We do not have these in stock, but are diligently working to complete production fixturing and get the components underway.

All orders will be shipped in the order that they are received.

Lead times are expected to be around 8-12 weeks before shipment of first pumps. They will not finish up all at once, so the lead time may be different for different places in line. If you have a problem with this and are going to be constantly emailing me checking on status updates, please do not place a preorder. With that being said, the demand for these pumps could lead to a far longer wait for the people who don’t patiently get in line early.

The pumps will include the remote oil filter housing/adjustable regulator, but will not come with fittings and line. This is due to the wide range of mounting locations available for the filter housing. I will be open to your input on possible mounting locations that will work for the majority once you start installing the pumps and may offer a bracket in the future. If you need any help with the fittings, I can certainly steer you in the right direction.

The price difference between Evo and DSM pumps is due to the addition of a component for the Evo pumps needed for the accessory belt tensioner.

If you have any questions regarding the pump or the ordering process, please email me at andrew@frontlinefabrication.com and I will help you out!

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Product Description

It’s no secret that the factory oil pump is basically the Achilles heel of the 4g63 powerplant. We’ve set out to create an affordable, convenient, and effective solution to the failure-fraught stock oil pump.

We started by throwing away the current external gear pump design for a much more suitable gerotor setup. Gerotor pumps have been proven time and time again in motorsport so there was no need to reinvent the wheel here. We designed a rotor set that would fit within the space constraints of the factory pump location, yet still flow up to 50% more than the factory pump. Along with this, we included replaceable wear surfaces inside the housing. In the event of a catastrophe, the pump is fully rebuildable with small, affordable parts.

After that part of the issue was solved, we needed to attack the problematic support design for the stock gears. The oil film that the stock gears ride on is all well and good until you throw side loading and oil cavitation into the mix. This is where the main issue lies with the OEM pump. Most people that have built a 4g63 can remember the first time they had to pound the oil pump drive gear out of their front case with a 5lb sledge. You can do all the gear detailing, careful assembly lubrication, and dainty timing belt tensioning that you want to, truth of the matter is that you still have a ticking time bomb on your hands. To solve this, the shaft of our gerotor pump is supported by ball bearings located on either side of the shaft. In addition to the obvious advantages of this design, it also blocks off the oil feed to the oil pump which just so happens to come directly off the oil passage for the #1 main journal. More oil at the mains can never be a bad thing.

The last problem we needed to address was pressure. We decided the best way to go about this would be with an adjustable pressure regulator. This will be housed in a remote filter housing that can be located anywhere your heart desires. The filter housing will be fed directly by the pump via a -10AN line. The bypass regulator will send excess oil back to the inlet of the pump via a -10AN line, while the regulated and filtered oil will head back to the factory feed location via another -10AN line. The remote housing will have plenty of NPT ports for whatever needs you may have. Notice how we said that the bypass oil will be headed back to the inlet of the pump. This is another major departure from the factory design which routes the oil back into the pan. With the bypass oil feeding the inlet of the pump, the cavitation (not to be confused with aeration) threshold of the rotor set is significantly raised. This leads to a smoother running pump with a greater lifespan. The other added benefit is that the pump will use the slightly pressurized return oil before it will pick up from the pan. This will keep more oil in reserve in the pan.

All in all, we feel we have created a simple, well-packaged solution to a serious problem. We’re hoping we have come up with a solution that can be enjoyed by daily drivers, “street cars”, and full out races car alike. We think the results speak for themselves!

-Full machined 6061 aluminum front case with replaceable wear surfaces

-4140PH rotor set and shaft

-Abec 5 precision ball bearings

-Machined aluminum timing gear

-Machined aluminum remote filter housing with adjustable pressure regulator


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Additional Information


DSM 6 Bolt , DSM 7 Bolt , Evo