The RB26DETT, RB25DET, and RB20DET engines are legendary for their power potential, but they are notoriously prone to oil starvation and lubrication failures during high-RPM circuit racing, drag events, or aggressive boosted applications. The factory oil pump simply cannot deliver adequate volume and pressure at extreme engine speeds, leading to main bearing wear, catastrophic failures, and broken sintered-metal gears under high load. The Tomei High Volume Oil Pump (TB203A-NS05A) solves these critical weaknesses with a significantly larger, high-strength pump gear that provides substantially increased oil flow and a built-in external pressure adjuster for precise tuning.
This pump is engineered to maintain consistent oil pressure even in highly modified RB engines pushing serious horsepower, dramatically improving reliability and longevity under demanding conditions. The robust construction addresses the stock pump’s weak points while delivering the volume needed to support aggressive builds without compromising the engine’s oiling system. An included gasket makes installation straightforward.
At Terra Firma Automotive, we supply this genuine Tomei High Volume Oil Pump as a must-have reliability upgrade for serious RB26, RB25, and RB20 builders. Developed in Japan to the highest standards, it is one of the most effective ways to protect your investment and unlock the full performance potential of your RB engine. Whether you are building a track weapon, drag car, or high-output street machine, this pump provides the peace of mind and oiling performance your RB deserves. Trust Terra Firma Automotive for premium Tomei components that keep your Skyline running strong and reliable.
- Tomei High Volume Oil Pump for RB26DETT, RB25DET, RB20DET
- Part Number: TB203A-NS05A
- Larger high-strength pump gear for increased oil flow
- External oil pressure adjuster for precise tuning
- Addresses stock pump’s lubrication and gear failure issues
- Dramatically improves reliability at high RPM and boost
- Essential for circuit, drag, and high-power RB builds
- Included oil pump gasket for straightforward installation
- Oil Pump Bolt Kit (TFA-110046) available separately
- Prevents main bearing wear and catastrophic failures
- Maintains consistent oil pressure under extreme conditions
- Direct upgrade for stock or modified RB engines
- Critical reliability component for serious performance builds
- Premium quality sourced by Terra Firma Automotive
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