Dieselsite High Pressure Oil Crossover Line

DieselSite High Pressure Oil Crossover Line – 7.3L Powerstroke

Improve idle quality, balance injector performance, and stabilize high-pressure oil delivery with the DieselSite High Pressure Oil Crossover Line. This upgrade connects the left and right high-pressure oil rails, allowing the PCM to monitor and balance pressure across both rails instead of relying on a single side.

By equalizing oil pressure and reducing pressure spikes, this crossover line delivers smoother idle, more consistent fueling, and improved overall engine operation.

🔥 What This Crossover Line Does:

• Balances oil pressure between left and right HPOP rails

• Allows the PCM to reference pressure from both rails

• Reduces pressure spikes by acting as an accumulator

• Improves idle quality and overall drivability

• Promotes more even fuel distribution across injectors

🛠️ Premium DieselSite Construction:

• High-pressure / high-temperature Teflon hose

• Stainless steel braided outer layer

• Anti-static discharge hose to reduce line failure

• High-temperature abrasion-resistant wire loom sleeve included

• OEM-style fittings for proper fit and reliability

⚙️ Engineered for Performance — Not Just Connection:

DieselSite didn’t stop at simply tying the rails together. After extensive testing with different hose sizes, they engineered an optimized internal diameter that maintains fast HPOP response.

Oversized hoses slow oil pressure response, increase crank time, and reduce high-RPM injection performance. This crossover line is sized specifically to maintain quick pressure rise while still balancing both rails — delivering the best possible performance.

⚠️ Important Notes:

• NOT required if running an Adrenaline HPOP (pressure balancing is handled internally)

• Do not confuse this with the high-pressure oil lines that connect directly to the HPOP

• Typical system pressures reach 3,000 PSI

🔧 Maintenance Recommendation:

DieselSite recommends replacing this crossover line (and OEM HPOP lines) annually, especially on trucks running performance tuning. Many chips increase pressure duration and duty cycle beyond factory limits, placing additional stress on oil hoses.

🚗 Application:

• 7.3L Powerstroke engines (excluding Adrenaline HPOP setups)

If you’re looking for smoother idle, balanced injector performance, and improved oil pressure stability, the DieselSite High Pressure Oil Crossover Line is a proven upgrade trusted by serious 7.3L owners.