DieselSite High Pressure Oil Crossover Line

Product Name: DieselSite High Pressure Oil Crossover Line
Manufacturer: DieselSite
Thoroughbred Diesel Part #: DSTHXXX
Fitment Notes: 1994-1997 Ford Powerstroke 7.3L | 1999-2003 Ford Powerstroke 7.3L

WE DO NOT RECOMMEND USING THE HX HOSE WITH AN ADRENALINE HPOP. THE ADRENALINE DOES THE JOB OF THE HX HOSE. RUNNING BOTH WILL POTENTIALLY CAUSE ISSUES/LEAKS

* Please do not confuse this item with the high pressure oil lines that connect to your high pressure oil pump.

The High Pressure Oil Crossover Line connects the left and right High Pressure Oil rails together. This allows the computer(PCM) to monitor the pressure of both High Pressure Oil rails, therefore producing a much more even fuel distribution by balancing the oil pressure between the two rails. The line also acts as an accumulator, resulting in less pressure spikes in the system.  The result is a smoother idle and all around better running engine. 

We have made the lines using high quality OEM style high pressure/high temperature teflon, stainless steel braided lines. We also send a high temp wire loom sleeve to cover the lines for abrasion protection. DieselSite also use another addition in that the hose is an anti-static discharge line. It greatly reduces failure of any fuel/oil carrying line.

Note: Just connecting the two rails is not "enough" for DIESELSITE. After several versions of hoses and sizes, we have come up with the perfect size hose and ratings. The larger the hose diameter, the slower the response of the high pressure oil pump. The slower the rate of "response", the slower the injection rate at high RPMs. This results in a loss of potential power as well as a longer crank time. Increasing the oil line's diameter increases the high pressure oil cavity in a sense, adding more oil volume needed to reach PCM desired levels. What we have now is the optimum in performance and balanced pressures.


*DieselSite recommends these hoses, as well as the OEM high pressure hoses, to be replaced once a year. Many chips increase the Duty cycle and length of the maximum pressures of the oil pump. This places exceptional stress on the hoses that they were not intended to see from the stock programs. The pressures in this system are very commonly at 3000 psi.

DieselSite High Pressure Oil Crossover Line Features:

• High Pressure Oil Crossover Line connects the left and right High Pressure Oil rails together
• Allows the computer(PCM) to monitor the pressure of both High Pressure Oil rails, therefore producing a much more even fuel distribution by balancing the oil pressure between the two rails
• High quality OEM style high pressure/high temperature teflon, stainless steel braided lines
• High temp wire loom sleeve to cover the lines for abrasion protection
• Anti-static discharge line, greatly reduces failure of any fuel/oil carrying line
• For more information on DieselSite call us at 1-859-737-4966.