I want to bring up something that i think is rather weird. Majority of people here are quick to make changes to there truck and ditch OEM stuff. For the 2nd Gen 24V the OEM lift pump is removed and upgraded to FASS, AirDog or mechanical pump. Stock OEM injectors pull out and aftermarket oversized injectors installed. Then the Factory ECM tune is ditched for Quadzilla, Smarty, Edge, etc. 

 

Why in the heck does any one want to hold so dearly to a thermostat, water pump or a fan clutch that MUST be OEM? 

 

First off if you do your research Moprar and Cummins don't make very many parts. Like the last blow up over a thermostat. There is only a small handful of companies making thermostats. Again Mopar and Cummins don't manufacture any thermostats, fan clutches, or water pumps. 

 

The other thing is comments of all the failures on forums. Wow. Sure everyone is quick to complain about a failure of a part. But... There is lots of different things that could of gone wrong. Improper installation, defective part, abusing the vehicle, radiator plugged up, etc. Then rarely if at all does anyone say anything about great results with a aftermarket parts. So that is a very skewed method picking parts.

 

My point is Mopar and Cummins is NOT doing any research to improve parts for our trucks they are done. There is entire aftermarket world where companies are actually improving parts and products. What is there just the handful of parts that MUST be OEM? I've got no clue...

 

I've watch as @Me78569 use OEM Dana Ball joints which end up failing early too. I watch people do this all the time thinking that the same parts are still there from back in 1998.5 to 2002. Nope those parts are long gone and someone else is making the replacement parts for Mopar and Cummins. Kind of like the original fuel pickup basket of the 1998.5 to 2002 that no longer produced period. 

 

The only thing I want to point out before jumping into Cummins or Mopar for OEM parts. First do a bit of research. First off is the old part going to be the same part manufacturer? Most likely not. Second find out who is manufacturing said part now. Pretty sure you'll find out you can have the very same part but a reasonable price from the manufacturer that is supplying Mopar or Cummins. You don't have to buy the logo on the box.

 

Then there is the entire aftermarket world of parts where other companies are making better parts and supplies for our trucks. Kind of like saying you want a OEM 47RE transmission which everyone here knows was a weak transmission won't hold the power. That where the aftermarket world comes in and making thing better with heavy duty parts. If OEM is so great I offer anyone to return there truck back to OEM let's go back to the OEM lift pump on the block or the OEM lift pump in the tank... I'm sure that won't last very long at all. Why even ask for OEM anything knowing that 99% of all parts today have been improved over the OEM of 1998.5 to 2002...

 

Some people forget... I just don't work on my own truck but tons of vehicles. I work on Dodge's, Ram's, Chevy's, Ford's, etc. Now I will admit there is some parts I've seen low service rates. I'm not going to beat anyone up over it I just use something that works better. Very very rare do I ever go to a dealer for parts this is plain foolish. 

 

Like there are sometimes that OEM is the only choice. I did a A/C job on a Subaru few years back and it was a hybrid car (6 cylinder) this made the A/C parts rather rare. I needed the pressure switch on the accumulator. Hunted all over the place for that switch come to find out its a dealer only item. What was worse was you had to buy it with the accumulator at the price of $520 dollars. Just because it came from Subaru dealer it was priced extremely high. I had no other choice. If there was a aftermarket part I would of jump in a heart beat and left Subaru dealer in a hurry. 

 

My job to all you is to help you fix your truck and help you get parts that are reasonable in price and good service life. I really do have a problem when people are push into dealer parts and prices because it not always the best parts either. Again why do we pull all the OEM stuff and replace it with aftermarket stuff?

 

Edited August 7, 20195 yr by Mopar1973Man

Experience with buying 3-4 mechanical lift pumps for a 92 12 valve I had for years showed Cummins sold me the same cheaper part that the auto parts sold and was not the original well made lift pump, only a higher price with better cardboard box to make you think it was better. 

 

Next run to Cummins revealed a well made, in U.S.A., Vibration damper needed for the 01. Much better built than the aftermarket lighter weight damper available from Dorman. I do not like Dorman quality anyway. 

Edited August 10, 20195 yr by JAG1

Done some digging and getting closer. 

 

Robertshaw manufactures that style of thermostat. 

 

Cummins...

 

Robertshaw 330 series looks almost the same. Commonly used in racing applications still sold through Summit racing.

 

Now I'm trying to find a contact information for Robertshaw Automotive division. Then to verify the thermostat Cummins has to Robertshaw number if possible. These thermostats are sold for a mere $20 on Summit. This might be the break where Cummins owners could buy $20 thermostat from Robertshaw WITHOUT the Cummins logo and $40-60 price tag.

 

On 8/7/2019 at 4:28 PM, Mopar1973Man said:

 

Another one, I was told by Eric @ Vulcan Performance to just call Cummins Dealer and order crossover tubes. OMG! $420 bucks for all 6 connector tubes. I refused to pay the $70 a piece price for Cummins logo'ed crossover tube. I had Eric order the set from his supplier took a huge savings. 

 

Just few example of wasteful spending just for OEM parts. 

 

Genuine Bosch tube from DAP $25.00

 

https://www.dieselautopower.com/bosch-cross-over-fuel-connector-tube-f00zr20002

Again still WAY CHEAPER than Cummins OEM at $70 dollars a piece. 

 

4 hours ago, Mopar1973Man said:

Again still WAY CHEAPER than Cummins OEM at $70 dollars a piece. 

 

 

Yes, but I think the point of this thread was finding the oem manufactures and buying direct for cheaper. I don't know for a fact, but chances are Bosch makes the tube for Cummins and Mopar. Just helping out.....

Not much better than my last purchase from Cummins. The oil cooler gasket for nearly $70 dollars.

 

I bought 2 Cummins cross over tubes for 23 bucks each, back in 08 that is.

8 hours ago, Mopar1973Man said:

Not much better than my last purchase from Cummins. The oil cooler gasket for nearly $70 dollars.

 

 

Interstate-McBee for Cummins #4932124 @ $13.08 and #3942915 @ $9.00.

 

https://usdieselparts.com/i-21260592-oil-cooler-gasket-3942914-93-03-dodge-5-9l-b-series-12v-or-isb-with-vp44.html?ref=category:778633

 

https://usdieselparts.com/i-21260591-oil-cooler-gasket-3942915-93-03-dodge-5-9l-b-series-12v-or-isb-with-vp44.html?ref=category:778633

 

Or if you want genuine Cummins, $40.00

 

https://picclick.com/Cummins-ISB-Encore-STORM-Oil-Cooler-Gasket-SET-191824827293.html

 

Or Napa/Mahle $47.49:

 

https://www.napaonline.com/en/search/engines-parts-gaskets/gaskets-seals-engine/auto-parts/dodge_truck/ram_2500_3_4_ton_-_pickup/2001?q=N%3D2500010%2B2601003%2B5002000%2B5002200%2B200220100%2B10200100%2B402203300%2B599999900%2B50450200%2B50499900%2B50600700%2B50699900%2B2804007%26Ns%3DP_CatScatSequence10_3&referer=PLP&leftNav=leftNav

 

Mahle GS33913 @ $36.49

 

https://cppdiesel.com/mahle-gs33913-oil-cooler-kit-dodge-trk-5-9l-isb-24v-cummins-1998-02/

Edited August 14, 20195 yr by NIsaacs
add info

Thanks, but kind of late.

 

I called NAPA locally they claimed they had no listing for a oil cooler gasket. Figures... Most likely a greenhorn parts person.

 

Mopar dealer and Cummins dealers are the worst for price and have the highest absolute price. Which 99% of the time I'm sure you can buy the very same part for a fraction of the price elsewhere. 

Edited August 14, 20195 yr by Mopar1973Man

Tidbit more.

 

@mr.obvious did a bit more testing. He put both Cummins old thermostat and the new thermostat in a pan of water and heated. Watching they both open exactly at the specified 190°F as stamped on the thermostat. The problem is when left to cool the new Cummins thermostat is EXTREME slow to close back up taking up to 3 minutes. The old thermostat only took a mere 30 seconds or so. This explains why the the new one is running cold sided. 

 

Cummins failure found. The thermostat body separated. Weld between the body and disc broke.

Not even one month old and failed on my previous post. I'm 90% sure this is a Robertshaw 330 high flow thermostat and produced by Mr. Gasket of all weird companies. 

 

Just to show this failure is common to split the body from the disc.

 

 

 

Just to show this design is used by Chevy 6.5L Diesels.

https://www.napaonline.com/en/p/MRD385190

 

 

So here we are Cummins does not produce the thermostat. Mr. Gasket does using Robertshaw 330 high flow design. Common to split apart in different applications. Just as @mr.obvious thermostat failed in his 2002 Dodge Cummins. So is it worth the $40 to $60 price tag to find out you have a part not even a Cummins part just reboxed Mr. Gasket. I've call Robertshaw and they do not acknowledge that they sell thermostats. This is when I found the tie to Mr. Gasket who is currently producing. As I said I'm 90% sure of this. 

Edited August 18, 20195 yr by Mopar1973Man