Loading... Please wait...


Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


  Our Newsletter

Terminator T500 HPOP

  • Image 1
Part Number:
Core Pre-Ship Only, Turn Around 14-17 Days
* I Agree With Terms Stated Below:

Terminator Engineering - T500 HPOP


Tired of your 15º or worn out 17º pump? Need a little more volume for those new injectors?  This Terminator Modded T500 pump is what you need and won't put a dent in your mod budget.

We ship you your pump with all new seals and orings, tested and ready to install.  Please indicate whether you are sending in a 15º or 17º and if it is out of a Super Duty or a OBS. Be sure to include your pump fittings as they will be resealed and sent back with the pump. You do not need to include your IPR with the core.

Click Here for the HPOP Core sheet the must accompany your core return, and must be shipped to the address at the top of the sheet. If your core does not have the core sheet and/or the HPOP line fittings aren't present then your core will be refused and returned. Due to increasing costs mounting gaskets are no longer included, We are sorry for any inconvience, but we do offer them still for purchase.


Warranty: 2 year

Currently we are only accepting pre-ship orders, which means you have to send a core in first to be built, Terminator modifies it and then ships it back to you

IMPORTANT* Terminator Engineering Terms for pump warranty. If you feel you might have a warranty on your T500 and you have diagnosed it isn't the IPR, Injector poppets, Injector Orings, or IPR Pigtail please send your pump back to Terminator for warranty. If pump is tested and flows Terminator will require you to pay return shipping on your good pump. If it is a confirmed warranty Terminator will correct and return the pump.  This warranty is only a manufacturer warranty and is not serviced or applied through Riffraff Diesel. By checking the box above you are agreeing to abide by these terms that Terminator has set forth.


Write your own product review

Product Reviews

Showing reviews 1-10 of 55 | Next

  1. Unbelievable!!! 5 Star Review

    Posted by on Mar 6th 2018

    Still a work in progress but everything I got from Riffraff is unbelievable!!! I’m not seeing big change in fuel mileage but we will retune after we finish with all of the mods. I see big power gains and it pulls like their is no tomorrow!!! Just pulled an office trailer 775 Miles no problem.

  2. Good investment and worth the money 4 Star Review

    Posted by on Mar 6th 2018

    The stock pump that was in my 95 PSD before was good but was getting tired so I was looking around for a good pump and decided to go with the terminator engineering pump. I was sceptical at first but glad I went the route I did it is well worth the money, I definitely notice a difference in power and boost levels I already have stage one fullforce injectors and it runs them with ease my truck has never ran this good or sounded so healthy.

  3. Best upgrade 5 Star Review

    Posted by on Jan 21st 2018

    I think upgrading the Hpop is the most important upgrade I've done. I have an OBS and from 75% to WOT there was no power gain. Had the same issue at freeway speeds. There was no passing going up a grade. After putting the T500 on, my truck just keeps pulling with tapering off. The turn around was awesome, had my pump back in a week. I live very close to where Terminator is based, so that helped with shipping.

  4. Perfect Upgrade Part 5 Star Review

    Posted by on Jan 1st 2018

    The T-500 is the best option for replacing your HPOP. It provides great oil pressure and volume for running hard. Pulling long hills with this you will not drop oil pressure due to pump volume dropping. Great price and amazing shipping speed too!

  5. Easy Upgrade 5 Star Review

    Posted by on Dec 28th 2017

    Had my pump back in less than 2 weeks from when I sent it in. Runs my Stage 2 injector so much better a full throttle. I don't know why I waited so long. Great price, great pump!

  6. Bad experience 1 Star Review

    Posted by on Dec 27th 2017

    I sent my hpop off to terminator engineering to be modified because the hpop was actually bad the truck would not build enough pressure to start the truck.It was troubleshooted so I knew it was the hpop before sending it off to make sure I didn’t waist my money. I received the hpop back and the truck would still not build pressure I went through everything a second time to make sure I didn’t miss anything and the ipr and lpop and injectors al checked out so I sent the pump back to terminator to be tested again. Now keep in mind this is 4 months into the truck being down I was getting frustrated with the whole thing. The pump was good according to terminator he told me he replaced all the internals just to make sure so it’s supposed to be a new rebuilt pump. Got the pump back installed it still nothing I could only make the truck start if I poured starter fluid into it so I went over everything again went out and bought a new ipr, new injectors, replaces the lpop with a melting lpop did all that and still nothing. I got ahold of a spare 15* hpop with over 250,000 miles on it and about 30 seconds of cranking and boom the truck started with no issues. It’s been quite frustrating that the first thing I replaced 7 months ago was the root problem of the whole truck and has been tested and supposedly rebuilt. I put thousands into this truck because I trusted terminators word who is very hard to get ahold of you can only write him maybe 5 emails before he changes emails and it took 4 weeks of my pump being there to get my refund from him. I know this is a long winded rant and I know the pump was installed correctly every time to the correct torque because I did it about 8 times. Overall terminator I believe needs to have a better system you have long wait times and it’s almost impossible to contact him so beware.

  7. Hell ya 5 Star Review

    Posted by on Dec 6th 2017

    Fast turn around
    Good pump
    Good priceing.


  8. awesome product 5 Star Review

    Posted by on Dec 4th 2017

    turn around time on this was much quicker than I anticipated and made a tremendous difference.

  9. Great pump and fast shipping 5 Star Review

    Posted by on Nov 4th 2017

    I couldn't believe how fast this pump got back to me. It was maybe five days there and back. I am beyond impressed. This thing just gives and gives. My old pump was good but tired. This one brings my ex back to life.

  10. great service 5 Star Review

    Posted by on Oct 29th 2017

    still working on engine so not sure how well this product works yet, but the service was very quick and responsive. would gladly recomend to anyone

Showing reviews 1-10 of 55 | Next