The Tork Tek OFV020 Adjustable Overflow Valve is a must-have upgrade for 1994–1998 Dodge Ram 5.9L 12 valve Cummins owners looking to properly control fuel pressure and maximize injection pump performance.
Unlike the factory overflow valve—which is known for inconsistent pressure and wear over time—the OFV020 allows precise, adjustable fuel pressure tuning, ensuring your P7100 injection pump receives stable, optimized fuel supply under all driving conditions.
Why Upgrade to the Tork Tek OFV020?
The factory overflow valve is a common weak point on 12 valve Cummins engines. When it fails or weakens, it can lead to:
- Low fuel pressure
- Hard starts
- Power loss
- Injection pump damage
The Tork Tek adjustable OFV solves these issues by allowing you to dial in the exact pressure your setup demands.
Key Features & Benefits
- Adjustable Fuel Pressure Control
Fine-tune fuel pressure to match stock, modified, or high-performance builds - Improved P7100 Pump Protection
Maintains consistent pressure to extend injection pump life - Enhanced Performance & Throttle Response
Stable fuel delivery results in smoother acceleration and better power output - Eliminates Weak Factory Valve Issues
Replaces failure-prone OEM overflow valve design - High-Quality Construction
Built by Tork Tek for durability in demanding diesel environments - Direct Replacement Fitment
Installs in the factory location with no major modifications required
Performance Gains You Can Expect
With proper adjustment, the OFV020 helps:
- Maintain optimal fuel pressure at idle and under load
- Reduce fuel pressure drop at higher RPM
- Improve engine reliability in towing and performance applications
- Support larger injectors, upgraded lift pumps, and performance tuning
Fitment
- 1994–1998 Dodge Ram 2500 / 3500
- 5.9L Cummins 12 Valve (P7100 Equipped)
Installation Notes
- Installs in place of the factory overflow valve on the P-pump
- Fuel pressure gauge is recommended for proper adjustment
- Ideal pressure settings vary based on modifications and setup
Who This Is For
This product is ideal for:
- 12 valve Cummins owners experiencing low fuel pressure
- Performance builds requiring precise tuning
- Tow rigs needing consistent fuel delivery
- Anyone looking to protect their P7100 injection pump investment
After 14 months of testing, Tork Teknology is releasing the world's first ADJUSTABLE over flow valve for the Cummins 12 valve, equipped with the P pump. Every single problem that has plagued the Bosch design has been SOLVED, including eroded seats and broken springs. Finally, there is a reliable P pump overflow valve that is adjustable!
Talk to any owner of a Cummins P pump, and he will tell you he has replaced his P7100 overflow valve. Several of the HP guys are on their second and third return valve. WHY? The number one complaint that I hear is "My Cummins 5.9 diesel is losing power and it's difficult to start". With that information, we cut many over flow valves in half to find out why. We were shocked by what we saw! Through 14 months of testing on a flow bench and on our test truck, we know exactly why the Cummins return valve is not a good design.
