Excellent and very prompt service. !!

Excellent service along with knowledgeable personnel to help get the right part

Unit works great, have noticed engine runs quieter and MPG increase about .5. Hardest part was unhooking line from tank to filter. Had to drop tank to get it free. 2014 Ford F-350 Super Duty

Incredible parts. The very best!!

I’ve been a Diesel Site customer and dealer for over six years now. Always the best in product performance and quality.

I received both orders in a timely fashion. Questions were answered and time and attention was directed towards me, the customer. Professional and curtiuos. Thanks Dan, Jennifer, Andrew,and all others that make up the staff at DieselSite.

Had some minor issues installing the fuel / water separator and fuel heater. Called Dieselsite and received excellent initial support from Christian who connected me with Dan, who spent a significant amount of time talking me through the issues I was having. Also sent me a picture of where to connect the power for the fuel heater. Such personal attention from a business is so rare these days...my waning faith in humanity was restored somewhat that day. The kit is certainly high quality and recommend it as well. Thank you gentlemen for the phenomenal support, you’ve earned my future business.

I do all of my own mechanic work. But I dont rebuild transmissions. And I hate trying to find a reliable rebuilder. Have had many bad experiences over the years! We had a few problems that were out of mine and Dieselsites control. Everyone here went out of their way to fix the problem! Top notch customer service! Transmission is AWESOME! My beast lives again!

I have a 97 OBS,The Dieselsite products I am currently running are Adrenaline HPOP, Wicked 66mm Turbo kit, Colder A/C vents, and International water pump conversion with billet housing and upper hose. The HPOP cleaned up the codes it was throwing for that and made a significant difference in power with the injectors I run. The turbo kit is a must have for all OBS trucks, It completely deletes all the poorly engineered designs of the OEM turbo system, no more EBPV, and the turbo bolts to the top of the pedestal and also uses V band clamps for everything so no more rusty bolts on the up pipe flange. The Colder A/C vent does exactly what they say and is a quick/easy install, another item every OBS needs. Finally the water pump kit is ANOTHER improved design that every OBS should have came with, it really cleans up the radiator hose situation and adds filtration. The staff is always very helpful if you have questions about a product or install. Dieselsite is a great company. Thanks Guys

Bought a Legendary 4R100 trans and remote fluid filter. Awesome quality and performance, they exceeded my expectations. From the time of the order to the delivery of the transmission (1000+ miles) to the return of the core, the transaction was flawless. Crystal, Dan and Jennifer are knowledgeable, helpful, responsive and a pleasure to deal with. Highly recommended!

Great valve body for the money. Woke up my lazy shifting 4R100. Shifts are crisp and firm. Doesn’t jerk or shift hard like others claim some valve body’s do. I feel confident with my trans being able to grab the gears and not have any slippage or mushy shifts. Great quality parts, directions were spot on, shipping was quick and easy! Will order from here again!

I installed bigger injectors and custom tunes from Swamps in my 7.3 PowerStroke that we’re supposed to run with a stock HPOP. The truck ran fine initially, but a year later the HPOP went out...in fact it blew the back plate and snap ring off the back of the pump. The pump may have been getting weak but my guess is the bigger injectors over worked the old pump. I installed an Adrenaline pump and the result is smoother idle, easier starts and more power. If you go with larger injectors, an Adrenaline pump is a must !

The turbo does everything as advertised! I have gained 30 rwhp, quicker boost, very low smoke over my stock turbo that had the wicked wheel 2. The staff were very professional and next day shipped a missing part while coordinating with the shop I was having the work completed at. Thank you for everything! I look forward to making future purchases.

There is most definitely a performance increase to be had here! i have a 2006 5.9 cummins and i see a big difference in throttle response and boost pressure as well as how fast i get boost when i ask for it . Do not however buy this wheel thinking it will make the turbo sound different (like a cheetah or something) i have a very loud aftermarket intake and i hear no difference between this one and my factory wheel but you can darn sure see a difference on the gauges! Install was easy but be ready to take BOTH housings off your turbo unless you got one crazy shaped and really strong set of snap ring pliers.

All my dealings with Dieselsite have been outstanding. Great customer service and product knowledge when answering questions.

Excellent, sales and service. I have made several orders over the years. Always appreciate services and answers to any questions. Look forward to order again

Had what I needed in stock! Received my parts fairly quick and they work great!

Great people to do business with!

Bought this water pump for my 7.3 superduty.. Also bought the lower tube, 203 Degree thermostat, and Billet housing. This upgrade is well worth the money and adds looks to the engine compartment. I have two trucks with these pumps... Both are flawless!

fast shipping, fast core refund, A+